Top 10 Industrial Valve Manufacturers in China

Quick Comparison: Top Industrial Valve Manufacturers in China

VERVO Valve – Industrial and Specialty Valve Manufacturer (Lishui, Zhejiang)

VERVO Valve is a Chinese manufacturer based in Lishui, Zhejiang, running production out of its Bihu facility inside the Wanyang Zhongchuang City industrial complex. The company builds API and ISO certified ball, gate, globe, check, and cryogenic valves for oil and gas, petrochemical, and power buyers, with a particular focus on sour, cryogenic, and corrosive-service applications. Workforce size and exact founding year aren’t disclosed on the supplier’s site. What stands out is the certification depth, several API monogram licenses under one roof, and no published minimum order quantity.

Why Buyers Choose VERVO Valve

Buyers pick VERVO Valve when documentation and certification matter more than shaving a few dollars off the unit price.

The catalog spans ball, gate, globe, check, butterfly, and plug valves, along with strainers, cryogenic, ceramic, dome, and control valves, built to API, ANSI, DIN, BS, and JIS standards. The company holds official API monogram licenses for API 6D, API 600, API 602, and API 609, plus API 607, API 622, and API STD 624-2023 certifications, a wide range of valve types under one certification roof.

The API Q1 quality system, ISO 15848-1 fugitive-emission testing, and CE marking under the PED point to a specialist, mid-high positioning rather than entry-level. Zhejiang Provincial Digital Workshop status and an Advanced Enterprise in Technological Innovation designation back that up. Export markets are described on the supplier’s site only as worldwide, so confirm your target market directly.

Sour gas, cryogenic, HF acid, chlorine, or oxygen service applications are where VERVO’s certifications pay off. A project needing only generic, low-pressure valves may find this level of documentation unnecessary, and a simpler supplier could cost less. The company’s site lists Rotork, MRC Global, Tyco, Velan, and BP among its customers, though it doesn’t detail the scope of those relationships.

What They Manufacture

• Ball valves
• Gate valves
• Globe valves
• Check valves
• Butterfly valves
• Plug valves
• Pipe strainers
• Control valves
• Ceramic valves
• Dome valves
• Cryogenic valves
• Specialty valves for HF acid, sour gas, cryogenic, chlorine, and oxygen service

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

VERVO Valve doesn’t publish a minimum order quantity, and per the supplier, any normal size or material already in stock can ship on request.

The certification profile points toward mid-high, specialist pricing rather than a budget play. With no stated MOQ, smaller trial orders look workable for stocked items, though custom sizes or non-standard materials add lead time. Free samples are available, with the buyer covering express shipping. For samples and other small urgent orders, express courier from China may be more suitable than standard freight. How volume affects per-unit pricing isn’t disclosed. What typically moves the number is material grade, pressure class, coating, third-party testing, and customization such as OEM branding.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

With ISO 9001, API Q1, and several API monogram licenses in place, VERVO Valve gives buyers a real paper trail to check before committing to an order.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

If sourcing for cryogenic service, ask specifically for test reports to BS 6364, the standard VERVO cites on its cryogenic gate valve line (A182 F304L, API 602). Ambient-temperature pressure testing alone won’t tell you much about how that valve performs at cryogenic temperatures.

Factory & Export Info

• Address: No.1 Building, Wanyang Zhongchuang City, Bihu, Lishui, Zhejiang, China
• Factory Visits/Audits: Welcomed, per the supplier’s FAQ
• Nearest Port/Airport: Not publicly disclosed, confirm with supplier
• Best Way to Contact: sales@vervovalve.com, +86-577-67007773, or vervovalve.com

Social Media Channels

Importers can review VERVO Valve’s official social profiles to check factory activity, product updates, and public communication before discussing valve requirements.

Verification note: These profiles were verified through matching company names, the vervovalve.com domain, industrial valve content, and consistent factory and product updates.

Zhejiang Liangyi Valve (LYV) – Ball Valve and Gate Valve Manufacturer (Lishui, Zhejiang)

Zhejiang Liangyi Valve (LYV) is a national high-tech enterprise based in Bihu Industrial Zone, Lishui city, Zhejiang province, running R&D, design, manufacturing, and sales for ball, gate, and globe valves. A 15-person R&D team, about a quarter of its roughly 60-person workforce, has built a patent portfolio of more than 20 valve designs since 2010, developed for tunnel boring machines, LNG plants, and coal chemical service. LYV suits buyers sourcing engineered or non-standard ball valves for major infrastructure projects rather than simple catalog orders.

Why Buyers Choose LYV

LYV fits buyers who need a valve engineered for an unusual application, not just a certified valve pulled off a shelf.

The catalog centers on ball valves (trunnion mounted, floating, forged steel, cast steel, high-temperature hard-sealing, cryogenic, fully-welded buried, DBB, mono-flange, mud), plus gate, globe, check, and butterfly valves, plug valves, and strainers, built to API, ANSI, JIS, DIN, GB, and BS standards, with API 6D monogram licensing (6D-1452) and fire-safety approval under API 607 and API 6FA.

A 15-person R&D team, about a quarter of LYV’s roughly 60-person staff, works with Wenzhou Pump & Valve Research Institute and Lanzhou University of Technology. Over 100 sets of production and testing equipment support in-house casting inspection, welding, machining, and pressure testing before certification. That R&D investment, plus 20+ national patents since 2010, points to mid-high, engineering-led pricing rather than a budget catalog supplier.

Buyers with tunnel boring, LNG cryogenic, poly-silicon, oil and gas pipeline, or coal chemical wear-resistant applications are a strong fit, since LYV has built patented ball valve designs for exactly those cases. Buyers who only need a handful of standard, off-the-shelf valves may not need this depth of engineering. Export markets aren’t listed on the site, so confirm shipping destinations directly.

What They Manufacture

• Ball valves: trunnion mounted, floating type, forged steel, cast steel, high-temperature hard-sealing, low-temperature cryogenic, fully-welded buried, DBB (double block and bleed) large-size and instrument types, mono-flange, mud, and other non-standard designs
• Gate valves
• Globe valves
• Check valves
• Butterfly valves
• Plug valves
• Strainers
• Slimline valves

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

LYV doesn’t publish a minimum order quantity or standard pricing on its site, so both should be confirmed directly with the supplier.

Given the R&D and engineering focus, positioning reads mid-high, not budget. Whether small trial orders work isn’t stated, especially for non-standard designs needing custom tooling, so ask directly. Bulk-volume pricing isn’t disclosed either. What usually drives the number is material grade (cast steel, forged steel, stainless steel, cast iron), pressure class, sealing type, and how much custom engineering the valve needs.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Between API 6D monogram licensing, fire-safe testing under API 607 and 6FA, and ISO 9001:2015, LYV gives buyers a documented basis for checking reliability before ordering.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

For fire-safety-critical applications (refineries, petrochemical plants, LNG terminals), ask for the API 607 or 6FA test report matched to the exact valve size, class, and body material you’re ordering. LYV’s fire-safety certificates are issued per tested batch, with the qualified size and pressure range printed on each one, not as a blanket approval for the whole product line.

Factory & Export Info

• Address: No. 799, Jinniu Street, Bihu Town, Liandu District, Lishui City, Zhejiang Province, PC 323000, China
• Factory Visits/Audits: Not specified
• Nearest Port/Airport: Not publicly disclosed, confirm with supplier
• Best Way to Contact: info@lyvalves.com, +86-577-67319185, or lyvalves.com

Social Media Channels

Importers can review Zhejiang Liangyi Valve (LYV)’s LinkedIn presence to confirm its valve manufacturing focus and public company details before making contact.

Verification note: The profile was verified through its matching company name, lyvalves.com domain, Zhejiang location, and industrial valve manufacturing description.

Tianyu Valve – Ball, Gate, and Custom High-Pressure Valve Manufacturer (Wenzhou, Zhejiang)

Founded in 2009, Wenzhou Tianyu Valve Technology Co., Ltd. designs and produces industrial valves in Oubei Town, Wenzhou, a district long known as the hometown of Chinese valves. The company runs an 8,500 square meter plant with around 200 sets of equipment and reports an annual production value near USD 5 million. Tianyu leans toward buyers who need custom or high-pressure valves (its own figures cite service up to 800°C and 10,000 PSI), rather than commodity buyers chasing the lowest catalog price.

Why Buyers Choose Tianyu

Tianyu suits buyers who need a valve built to unusual pressure, temperature, or corrosion specs and want fast prototyping, not just a standard catalog part.

The line covers ball valves in trunnion mounted, floating, full welded, and double block and bleed (DBB) forms, plus butterfly, gate, globe, check, and plug valves and strainers. Materials run from A105 and LF2 carbon steel to F22 alloy steel and 304/321 stainless, with soft seats (PTFE, DEVLON) or hard seats (Stellite 6) depending on service. Standards cited include API 6D, ASME B16.34, and API 607, with NACE MR0175 available for sour service.

The company positions itself around customization: it states it can turn drawings, review, and small-batch prototypes for demanding conditions (up to 800°C or 10,000 PSI) within 72 hours, and claims over 200 completed custom cases. With roughly 200 sets of equipment across an 8,500 square meter site and about 15 years in operation, capacity sits in the small-to-mid range rather than high-volume commodity output.

Buyers running critical oil and gas, refining, or power applications who need engineered valves and fast technical turnaround are the natural fit. Buyers who only need large volumes of standard low-pressure valves may find better unit pricing from higher-volume suppliers. Export destinations aren’t itemized on the site, so confirm shipping regions and documentation directly.

What They Manufacture

• Ball valves (trunnion mounted, floating, full welded, DBB)
• Butterfly valves
• Gate valves
• Globe valves
• Check valves
• Plug valves
• Strainers
• Custom actuators and engineered valve solutions

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

Tianyu doesn’t publish an MOQ or price list, so both should be confirmed directly, though the company does advertise small-batch prototyping, which suggests low-quantity engineered orders are workable.

Positioning reads mid to mid-high given the custom and high-pressure focus. Trial and prototype runs appear possible, useful for buyers validating a design before committing to a production batch. How volume affects pricing isn’t disclosed. The main cost drivers here are material grade (carbon, alloy, or stainless steel), pressure class, seat type (soft versus hard-faced), optional testing (fire-safe, cryogenic, fugitive-emission), and the degree of customization.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Tianyu tests to recognized standards (API 598, API 6D, API 609, API 527, DIN 3230) and holds ISO 9001, API 6D, and CE, giving buyers a documented basis to verify before ordering.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

For low-emission service (natural gas, hydrogen, refined-fuel pipelines), ask for the ISO 15848-1 fugitive-emission test report tied to your exact valve size, stem, and packing configuration. Tianyu references this testing on trunnion ball valves, but fugitive-emission ratings are packing- and configuration-specific, so a report for one valve does not automatically cover another.

Factory & Export Info

• Address: Oubei Town, Wenzhou, Zhejiang, China (confirm full address before visiting)
• Factory Visits/Audits: Not specified; third-party inspection welcomed
• Nearest Port/Airport: Not publicly disclosed; Wenzhou-area suppliers typically ship via Ningbo port, confirm with supplier
• Best Way to Contact: Company website contact form (24-hour reply quoted)

Social Media Channels

Importers can review Tianyu Valve’s official social channels to examine its manufacturing activity, valve products, and public updates before making contact.

Verification note: The supplied lyvalves.com domain belongs to another manufacturer; these profiles were verified against Tianyu Valve’s official website links, Wenzhou address, company name, and industrial valve activity.

Dervos Valve – Ball and GGC Valve Manufacturer and Multi-Brand Exporter (Xiamen and Lishui)

Established in 2008 and headquartered in Xiamen, Dervos Group runs its own ball valve and gate/globe/check (GGC) factories in Lishui, Zhejiang, while also operating as a large multi-brand exporter. Its Ball Valve Manufacturing Center covers 15,000 square meters with 68 staff, including 6 engineers. Alongside in-house production, Dervos sources from a network of over 100 partner factories, so buyers get one-stop procurement across nearly every valve type. This dual model suits buyers wanting mixed valve packages from a single contact; buyers needing full transparency on which items are self-made versus sourced should confirm per line.

Why Buyers Choose Dervos

Dervos fits buyers who want a single supplier to handle a mixed valve package, combining its own ball and GGC valves with sourced items across nearly every category.

The in-house range centers on ball valves (trunnion mounted, floating, fully welded, cryogenic, top entry, multi-way) and gate, globe, and check valves in cast, forged, and stainless grades. Beyond that, Dervos pulls from over 500 China valve manufacturers to cover butterfly, plug, needle, diaphragm, control, safety, and specialty valves, following API 6D, 600, 607, 6FA, 624, and ISO 15848 where applicable.

The company has run for more than a decade and reports sales agencies in over 20 countries across Europe, South America, and the Middle East, with a 25-member marketing team where 70% have 5+ years in valves. It names BP, YPF, Shell, and Petronas among operators reached through its network. That export depth and multi-brand sourcing is the core draw.

The trade-off is transparency: because Dervos both manufactures and sources, buyers who need to know exactly which valves come from its own Lishui lines versus partner factories should ask for that split, along with the specific certificate covering each item. An 18-month warranty is cited, with complaint responses within 3 days.

What They Manufacture

• Ball valves (trunnion mounted, floating, fully welded, cryogenic, multi-way, top entry, lining)
• Gate valves (cast, forged, stainless, alloy, knife, through-conduit, wellhead, cryogenic, pressure seal)
• Globe valves (cast, forged, stainless, bellows seal, Y-type, angle type)
• Check valves (swing, wafer, lift, tilting disc, axial flow)
• Butterfly valves (eccentric, concentric, high performance, lined)
• Plug valves, strainers, line blind valves (and sourced needle, diaphragm, control, safety valves)

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

Dervos doesn’t publish an MOQ, and pricing is vendor-based across both its own production and sourced lines, so confirm directly.

Positioning spans mid to mid-high depending on whether a valve is self-manufactured or sourced. Because Dervos maintains a broad supplier network, it can often match a target price point, but that also means unit cost and lead time vary by item. Cost drivers include material grade, pressure class, size, actuation, and whether the item is in-house or externally sourced. Quotes are quoted within one day for standard inquiries.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Dervos operates a four-stage QC process (casting, machining, assembly, painting/packing) with in-house inspection, and issues an inspection report plus a material testing report after shipment, supporting reliable sourcing when documentation is requested per item.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

Because Dervos sells both self-made and sourced valves, insist that each certificate (API monogram, PED, ISO 15848) names the actual producing factory and matches the exact valve in your order. A group-level certificate list does not guarantee that a specific sourced item was made under that scope, so verify at line-item level for critical service.

Factory & Export Info

• Address: Ball valve and GGC factories in Lishui, Zhejiang; HQ in Xiamen (confirm exact factory address before visiting)
• Best Way to Contact: sales@dervosvalve.com, +86-0592-5185336

Social Media Channels

Importers can examine Dervos Valve’s social channels for product demonstrations, factory activity, and company updates before discussing industrial valve requirements.

Verification note: The profiles were verified through matching Dervos branding, Xiamen location, industrial valve content, company history, website references, and dervosvalve.com contact details.

SWD Plastic (Salvador Industrial) – Plastic Valve and Piping System Supplier (Ningbo, Zhejiang)

SWD Plastic, operated by Ningbo Salvador Piping System Co., Ltd., is a Ningbo-based supplier of plastic valves, pipes, and fittings in PVC, CPVC, PP, PPR, HDPE, PPH, and PVDF. The parent, Salvador Industrial, was established in 2008, with SWD focused on plastic piping since 2014. This is a supply-chain and export partner working through audited manufacturing partners, not a metal industrial-valve foundry, so it fits buyers sourcing thermoplastic valves for water, irrigation, and chemical service rather than high-pressure steel valves for oil and gas.

Why Buyers Choose SWD Plastic

SWD Plastic suits distributors and contractors who need a reliable single source for thermoplastic valves and matching pipe systems, with quality control across a managed supplier network.

The valve range is entirely plastic: ball, butterfly, check, diaphragm, and globe valves plus PVC gate valves, in materials chosen for corrosion resistance rather than pressure rating, such as PVC, CPVC, PP, and PVDF. These pair with a full piping catalog (PVC, CPVC, PPR, HDPE, PPH, PVDF pipes and fittings), which is the main reason buyers use SWD: complete plastic piping packages from one partner. Products are described as designed and tested to DIN/ISO standards.

Rather than owning foundries, SWD coordinates production with audited partner factories and tracks each order from raw material to shipment. It reports ISO 9001 certification, CE and REACH marks, and NSF, UL, and WATERMARK approvals on selected products, with SGS lab testing on some items. Reported milestones include exports to 80+ countries and annual sales reported at USD 8.8 million in 2024.

Buyers who need plastic valves for water treatment, irrigation, or corrosive chemical media are the right fit. Buyers needing metal valves for high-pressure or high-temperature service should look elsewhere, since SWD’s product base is thermoplastic. Confirm which certificate applies to which material, as approvals differ across PVC, CPVC, and PVDF lines.

What They Manufacture

• Plastic ball valves (PVC, CPVC, PP, PP compression)
• Plastic butterfly valves
• Plastic check valves
• Plastic diaphragm valves
• Plastic globe valves
• PVC gate valves
• Plastic back-pressure and air-release valves
• PVC/CPVC/PPR/HDPE/PPH/PVDF pipes and fittings

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

SWD offers flexible MOQ options rather than a fixed minimum, so quantities can be discussed per product and per project.

Positioning is low to mid, in line with thermoplastic valves and fittings. Because SWD is a supply-chain partner, pricing and lead time depend on the partner factory and the material. The main cost drivers are resin type (PVC and PP at the lower end, PVDF and CPVC higher), size, pressure rating, and any OEM branding, private-label printing, or custom molds. Custom packaging and specification changes are available.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and test documentation?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

SWD applies raw-material, in-process, finished-product, packaging, and pre-shipment inspection across its partner network, with ISO 9001 and product-level marks (CE, REACH, NSF, UL, WATERMARK), giving buyers documentation to verify before large orders.

Risks to watch:

• Material certificates differing between sample and bulk order
• Resin grade not suited to the actual chemical or UV exposure
• Pressure/temperature rating mismatches (thermoplastics derate sharply with heat)
• Documentation gaps on which certificate covers which material
• Lead-time slippage on customized or private-label orders

Action: Request material test reports, third-party inspection, and factory audit access before large orders.

For chemical-service plastic valves, confirm the exact resin (for example PVDF or PPH for aggressive media) and ask for the chemical-compatibility and pressure-temperature derating data at your operating temperature. Thermoplastic pressure ratings drop steeply as temperature rises, so a room-temperature rating can be misleading for hot or heated-fluid lines.

Factory & Export Info

• Address: Ningbo, Zhejiang, China (supplier office; confirm before visiting)
• Factory Visits/Audits: Partner factories audited and monitored; confirm visit access
• Nearest Port/Airport: Ningbo port
• Best Way to Contact: cindyli@swdplastic.com, +86-574-88324025, or swdplastic.com

Social Media Channels

Importers can explore SWD Plastic (Salvador Industrial)’s social channels to review plastic valve products, manufacturing activity, and company updates before making contact.

Verification note: These profiles were confirmed through the swdplastic.com website, matching Salvador company identity, Ningbo location, and plastic valve and piping system content.

Supmea Automation – Process Instrumentation Supplier with a Valve Line (Hangzhou, Zhejiang)

Supmea Automation Co., Ltd., operating since 2006 from Hangzhou Economic Development Area, is primarily a process-instrumentation company: flow, level, pressure, temperature, and liquid-analysis measurement for water, wastewater, chemical, oil and gas, and related industries in more than 100 countries. Valves appear as one supporting product category alongside its instruments, not as its core business. Buyers sourcing measurement and control instrumentation (with valves as an add-on for a one-stop process package) are the fit here; buyers whose main need is industrial isolation or pipeline valves should treat Supmea as a secondary option and confirm valve specifics directly.

Why Buyers Choose Supmea

Supmea suits buyers who need measurement and control instrumentation first, with valves as a convenient add-on to complete a process package.

Its core catalog is instrumentation: electromagnetic and ultrasonic flowmeters, radar and differential-pressure level transmitters, pressure and temperature sensors, pH, dissolved-oxygen, turbidity, and chlorine analyzers, and data-acquisition systems. These serve water and wastewater, food and beverage, pulp and paper, mining, oil and gas, chemical, HVAC, and data-center cooling. Valves are listed under products as a supporting line rather than an engineered specialty.

The company reports operations since 2006, a presence in over 100 countries, and representative offices in Singapore, Spain, Korea, Indonesia, and South Africa, with named application cases at water plants, sewage-treatment facilities, and industrial sites. For instrumentation-led projects, that reach and application track record is the main draw.

Because the source material gives no valve-specific detail (no valve types, sizes, materials, pressure classes, or valve certifications), buyers who need industrial valves as their primary purchase should ask Supmea directly for the valve catalog, applicable standards, and test documentation before treating it as a valve supplier. For a pure valve sourcing need, a dedicated valve manufacturer is usually the better route.

What They Manufacture

• Flow measurement instruments (electromagnetic, ultrasonic, vortex flowmeters)
• Level measurement (radar, differential-pressure transmitters)
• Pressure and temperature measurement
• Liquid-analysis instruments (pH, dissolved oxygen, turbidity, chlorine)
• Data acquisition and control systems
• Valves (supporting product line, specifications not detailed in source notes)

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

Supmea does not publish valve MOQ or pricing, and its valve line lacks published specifications, so both must be confirmed directly.

Positioning is vendor-based. Since valves are a supporting line rather than a core product, expect pricing and lead times to be handled case by case, likely tied to which instruments are ordered alongside them. Without published valve materials, sizes, or ratings, cost drivers cannot be assessed from the source notes and should be requested with a full quotation.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and test documentation?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Supmea’s instrumentation is used in large water, wastewater, and industrial projects across 100+ countries, but the source notes list no valve-specific certifications, so reliability for valves specifically should be verified before ordering.

Risks to watch:

• No published valve certifications or standards in the source material
• Material certificates differing between sample and bulk order
• Pressure/temperature rating mismatches
• Documentation gaps on valve compliance (API/ANSI/DIN not confirmed)
• Lead-time slippage on non-core product lines

Action: Request valve datasheets, applicable standards, MTCs, and third-party inspection reports before any valve order.

Since valves are not Supmea’s core product, treat any valve purchase like sourcing from a new supplier: ask for the specific valve series, its certification (API, CE, or equivalent), and a sample or reference installation before committing to volume. For instrumentation, its measurement product certifications are the relevant ones to review.

Factory & Export Info

• Address: 5th floor, Building 4, Singapore Hangzhou Science Technology Park, Hangzhou Economic Development Area, Hangzhou 310018, China
• Factory Visits/Audits: Not specified
• Nearest Port/Airport: Not publicly disclosed; Hangzhou-area shipments typically route via Shanghai or Ningbo port, confirm with supplier
• Best Way to Contact: info@supmea.com, +86 15868103947

Social Media Channels

Customers can review Supmea Automation’s social channels for product demonstrations, process instrumentation updates, and public company activity before discussing their requirements.

Verification note: These profiles were verified through official website links, matching Supmea branding, the supmeaauto.com domain, Hangzhou location, and process-automation content.

JSC Valve – Forged and Cast Steel Valve Manufacturer (Wenzhou, Zhejiang)

Founded in 2000, China JSC Valve Group Co., Ltd. manufactures forged and cast steel valves from a 21,000 square meter facility in Oubei, the “Chinese Pump & Valve Town” within Wenzhou, Zhejiang. Its integrated setup covers design, production, inspection, sales, and after-sales, with valves rated from Class 150 to Class 2500 (PN6 to PN420) and sizes from NPS 1/4 to 80 inch. JSC suits buyers needing a broad forged and cast steel valve range across petrochemical, oil, gas, power, and metallurgy, backed by its own TRIC butterfly and SDV ball valve brands.

Why Buyers Choose JSC Valve

JSC Valve fits buyers who want a single manufacturer covering a wide span of forged and cast steel valve types, sizes, and pressure classes.

The catalog runs across ball valves (trunnion mounted, top entry, floating, metal seated, fully welded), gate, globe, check, butterfly, and plug valves, strainers, and API 6A wellhead valves. Materials are extensive: cast grades such as WCB, LCB, LC1, CF8, CF8M, CF3M, C5, WC6, WC9, monel, and duplex, and forged grades including A105, F11, F22, F91, F304, F316, F51, F321, F347, and Inconel. Service temperatures span -196°C to 680°C, built to ANSI, API, DIN, BS, JIS, EN, and GOST standards.

With 21,000 square meters, CNC machining, in-house pressure testing, ultrasonic cleaning, and automatic painting, JSC positions itself as a mid-tier volume manufacturer with engineering capability, citing CAD/CAM and finite-element analysis for designs like fully welded underground ball valves and one-piece forged top-entry ball valves. Its TRIC butterfly and SDV ball valve brands are marketed internationally across America, Europe, Southeast Asia, the Middle East, and Africa.

Buyers needing a broad, standards-compliant forged and cast steel valve range for process industries are well matched. Buyers requiring niche fugitive-emission or fire-safe certifications beyond API 607 should confirm those specific approvals, since the listed accreditations center on API 6D, 600, and 607 plus PED.

What They Manufacture

• Ball valves (trunnion mounted, top entry, floating, metal seated, fully welded, special)
• Gate valves (cast steel, forged steel)
• Globe valves (cast steel, forged steel)
• Check valves (swing, wafer, forged steel, axial flow)
• Butterfly valves (concentric, eccentric)
• Plug valves (sleeved, pressure balanced)
• Y strainers, API 6A wellhead valves, valve components

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

JSC does not publish an MOQ, and pricing is quote-based, though the company cites competitive pricing as part of its positioning.

Positioning reads mid-tier: a broad standards-compliant range at competitive rather than premium pricing. Whether small trial orders are workable isn’t stated and should be raised directly, especially given the wide material list. How volume affects pricing isn’t disclosed. Cost drivers include material grade (carbon, alloy, stainless, duplex, monel, or Inconel), pressure class (up to Class 2500), size (up to 80 inch), and any engineered or welded construction.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

JSC holds ISO 9001, PED, API 607, API 6D, and API 600, and runs in-house pressure testing and machining inspection, supporting reliable sourcing when documentation is requested.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

For high-temperature service near JSC’s upper limit (up to 680°C, using grades like F91 or WC9), confirm the material’s post-weld heat-treatment records and hardness reports. Creep-strength alloys such as F91 are sensitive to heat-treatment control, and an incorrect temper can undermine long-term performance in power-plant steam service regardless of the pressure rating on the nameplate.

Factory & Export Info

• Address: Wuxing Industrial Zone, Oubei, Wenzhou, Zhejiang, China
• Factory Visits/Audits: Factory tour featured on the company site; confirm audit access
• Nearest Port/Airport: Not publicly disclosed; Wenzhou-area suppliers commonly ship via Ningbo port, confirm with supplier
• Best Way to Contact: sales@jscvalve.com, +86-577-67355701

Social Media Channels

Importers can check JSC Valve’s Facebook page to review its public company presence before discussing forged or cast steel valve requirements.

Verification note: The page was verified through the matching JSC Valve company name and Wenzhou, Zhejiang location shown on both the profile and official website.

Bosseal Valve – Cast and Forged Steel Valve Manufacturer (Suzhou, Jiangsu)

Founded in 2013, Bosseal Valve (Suzhou) Co., Ltd. designs and produces industrial valves from Suzhou, Jiangsu, in the Suzhou New District (SND). The range covers ball, gate, globe, check, butterfly, plug valves, API 602 forged valves, and piping strainers, built to API, ASME, ISO, DIN, BS, and EN standards. Bosseal suits buyers who want a standards-compliant valve range with defined commercial terms (an 18-month warranty and roughly 8-week lead time on conventional valves); buyers needing published certification details should request them directly, as the notes emphasize standards over named accreditations.

Why Buyers Choose Bosseal

Bosseal fits buyers who value clear commercial terms, a defined warranty and lead time, alongside a standards-based cast and forged steel valve range.

The catalog spans ball, gate, globe, check, butterfly, and plug valves, plus API 602 forged valves and piping strainers, in materials such as cast steel, forged steel, carbon steel, stainless steel, and alloy steel. Product listings reference standards including API 600, API 608, ISO 17292, and BS 5351 for ball valves, with heavy-wall, high-class examples on the site (for instance WCB and duplex gate valves up to Class 2500 and RTJ flanged connections).

Bosseal sets out buyer-friendly terms up front: an 18-month warranty after delivery (or 12 months after installation), a general lead time around 8 weeks for conventional valves, and a value-added support team covering commercial, technical, quality, and transportation issues from bidding to shipment. For buyers who want predictable timelines and after-sales terms, that transparency is the main draw.

The company is younger (founded 2013) and its published material leans on standards compliance and QC imagery (wall-thickness, PMI, pressure, and roughness testing) rather than named third-party certificate numbers. Buyers in critical service should therefore request the specific certificates, fire-safe, NACE MR0175, and 3.2 documentation, that apply to their exact valve before ordering.

What They Manufacture

• Ball valves (per API 6D, API 608, ISO 17292, BS 5351)
• Gate valves (cast and forged steel, up to high pressure classes)
• Globe valves
• Check valves
• Butterfly valves
• Plug valves
• API 602 forged steel valves
• Piping strainers and water valves

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

Bosseal doesn’t publish an MOQ, and pricing is quote-based, with the company positioning itself on competitive pricing and low after-sales cost.

Positioning is mid-tier: standards-compliant valves at competitive rates with a stated focus on long-term partnership pricing. Whether small trial orders are workable isn’t specified, so confirm directly. How volume affects pricing isn’t disclosed. Cost drivers include material grade (carbon, stainless, alloy, duplex), pressure class (examples reach Class 2500), size, connection type (RF, RTJ), and any fire-safe or NACE requirements.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Bosseal manufactures to API, ASME, ISO, DIN, BS, and EN and runs in-house QC (wall-thickness, PMI, pressure, roughness, and painting inspection), but names few specific certifying bodies in its material, so request the actual certificates before large orders.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance and named certificate bodies
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

Bosseal states 3.2 certification is available on request. For critical projects, specify EN 10204 3.2 material certificates (verified by an independent inspector) rather than 3.1 (issued by the manufacturer alone), and confirm this in the purchase order. The difference matters most on pressure-boundary components, where independent verification of the material heat is often a project requirement.

Factory & Export Info

• Address: Building 2, No. 59 Songshan Road, SND (Suzhou New District), Suzhou, Jiangsu, China
• Factory Visits/Audits: Factory tour featured on the site; confirm audit access
• Nearest Port/Airport: Not publicly disclosed; Suzhou-area shipments commonly route via Shanghai port, confirm with supplier
• Best Way to Contact: sales@bossealvalves.com, +86 13962282972

Social Media Channels

Importers can review Bosseal Valve’s LinkedIn page to confirm its Suzhou location, industrial valve focus, and public company details before making contact.

Verification note: The LinkedIn page was verified through its matching company name, bossealvalves.com domain, Suzhou headquarters, founding year, and industrial valve manufacturing description.

Weizidom (Wesdom) Group – Water and Utility Valve Group with Multiple Factories (Zhengzhou HQ)

Weizidom Group (also branded Wesdom) is a Zhengzhou-headquartered group that has been in the valve trade for more than 25 years, producing and exporting valves, pipe fittings, and flow meters through five factories across China. Its plants are split by specialty: Tianjin for butterfly valves, Hebei for cast iron gate and globe valves, Wenzhou for cast and stainless steel valves, Shandong for pipe fittings, and Lianyungang for water meters, coordinated with a foreign-trade arm and overseas branches in Tanzania, Zambia, Kenya, and Indonesia. Weizidom suits buyers sourcing water, municipal, and utility valves in volume; buyers needing single-factory traceability should confirm which plant supplies each item.

Why Buyers Choose Weizidom

Weizidom fits buyers sourcing water, municipal, and utility valves in volume who benefit from a multi-factory group and existing export channels into Africa, the Middle East, and Asia.

The product mix centers on waterworks: resilient-seated and soft-seal gate valves (DN40 to DN1000, BS 5163 and DIN 3352 designs), ductile iron and cast steel valves, double-flange butterfly valves up to DN1000, and globe valves, alongside pipe fittings, flow meters, and water meters. A cited project replaced 40 ATEX-compliant butterfly valves for CNPC on RNG storage tanks.

The group’s strength is breadth and logistics rather than high-spec oil and gas engineering: five specialized factories, large stock warehouses (with quoted production of 3 to 4 days on stocked items), and exports to 32 countries backed by branches in Tanzania, Zambia, Kenya, and Indonesia. For water utilities and distributors in those regions, that supply and stock position is the main advantage.

Buyers needing municipal and utility valves at competitive prices are the natural fit. Buyers requiring high-pressure API 6D oil and gas valves with full monogram documentation should confirm which factory and which certification apply, since the group spans several plants and product tiers, and the source notes don’t detail specific certificate bodies.

What They Manufacture

• Gate valves (BS resilient seated, DIN F4/F5 soft seal, BS 5163 ductile iron, rising and non-rising stem, DN40 to DN1000)
• Butterfly valves (double flange, hard and soft seal, up to DN1000)
• Globe valves
• Ball valves
• Cast iron, cast steel, and stainless steel valves
• Pipe fittings, flow meters, water meters

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

Weizidom does not publish an MOQ, but its large stock warehouses and quoted 3 to 4 day production on stocked items point to volume-friendly, low-to-mid pricing.

Positioning is low to mid, in line with water and utility valves rather than high-spec process valves. Stocked items support quick turnaround, which helps buyers with tight project timelines. How bulk volume affects pricing isn’t disclosed. Cost drivers include body material (ductile iron, cast steel, stainless), size (up to DN1000), seal type (soft or hard), actuation (manual, gear, pneumatic, motorized), and testing standard (BS 5163, ISO 5208, DIN 3230). Packaging and transport can be adjusted at the buyer’s cost.

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

Weizidom displays certificates on its site and produces to referenced water standards (BS 5163, ISO 5208, DIN 3230), but the source notes don’t name specific certifying bodies, so confirm the exact certificates per factory and product before large orders.

Risks to watch:

• Material certificates differing between sample and bulk order, especially across multiple factories
• Coating or lining not suited to potable water or the actual media
• Pressure/temperature rating mismatches
• Documentation gaps on which factory and standard cover each item
• Lead-time slippage on non-stocked or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

For potable-water gate and butterfly valves, confirm the internal coating is a certified drinking-water epoxy (for example WRAS or equivalent) and that the resilient seat compound is rated for potable service. On buried water mains, also verify the coating thickness and holiday-test records, since coating integrity, not just the valve body, drives service life in municipal networks.

Factory & Export Info

• Address: Zhengzhou, Henan (HQ); producing factories in Tianjin, Hebei, Shandong, Lianyungang, and Wenzhou (confirm the relevant factory address before visiting)
• Factory Visits/Audits: Not specified; confirm which factory supplies your order
• Nearest Port/Airport: varies by producing factory, confirm shipping origin
• Best Way to Contact: info@wsdvalve.com, +86-17319732766

Social Media Channels

Importers can review Weizidom Group’s social profiles to examine its valve products, manufacturing activity, and public company updates before making contact.

Verification note: These profiles were verified through Weizidom Group’s official product catalogs, matching company identity, Zhengzhou location, website references, and valve manufacturing activity.

Jiangheng (JH) Valve – Cryogenic, Oxygen, and Severe-Service Valve Manufacturer (Funing, Jiangsu)

Jiangsu Jiangheng Valve Industry Co., Ltd. (JH Valve) traces back to Funing County Valve Factory and dates its history to 1965, based in Funing, Jiangsu, an area tied to China’s automatic-control instrument and valve origins. The company runs three production bases (a second factory added in 2021 under a 230 million yuan investment, a third under construction for end-2026) with 100+ CNC machines, class 100,000 cleanrooms, and an annual capacity of about 300,000 valves. JH suits buyers needing severe-service valves, cryogenic, oxygen, high-temperature power, and coal-chemical wear-resistant, rather than buyers after basic commodity valves.

Why Buyers Choose JH Valve

JH Valve fits buyers with severe-service requirements, cryogenic, oxygen, high-temperature, or abrasive media, where standard valves fall short.

The range spans gate, globe, check, ball, butterfly, and control valves, but the specialty lines are the differentiator: self-cleaning and double-offset metal-seated ball valves, metal-seated triple-eccentric butterfly valves for super-high-pressure bidirectional sealing, cryogenic valves, oxygen valves, wear-resistant ball valves with tungsten-carbide (WC) flame plating for coal chemical, and eccentric semi-ball (C-type) valves. Service covers -196°C to 900°C, sizes 1/2 inch to 160 inch (DN15 to DN4000), and pressure from Class 150 to Class 4500.

The certification depth is unusually broad: API 6D, 600, 602, 609, fire-safe API 607 and 6FA, API 624 and ISO 15848 fugitive-emission, plus SIL functional safety and marine approvals from ABS, BV, and CCS. Production backs it up, with 100+ advanced CNC machines including 5m vertical lathes, JP-8000 supersonic flame spraying, ultra-low-temperature test rigs, and a dedicated class 100,000 oxygen-valve cleaning workshop. Named project customers include PetroChina, Sinopec, Chinalco, and China Shenhua.

Buyers with cryogenic LNG, oxygen, high-temperature power, or coal-chemical wear applications are the strong fit. Buyers who only need standard low-pressure valves may find JH’s engineering and certification depth beyond their needs, and its pricing tier reflects that focus. Export regions aren’t itemized in the notes, so confirm shipping destinations directly.

What They Manufacture

• Ball valves (orbit, long-distance pipeline, self-cleaning metal-seated, double-offset metal-seated, wear-resistant WC flame-plated, eccentric semi-ball C-type)
• Gate valves
• Globe valves
• Check valves
• Butterfly valves (metal-seated triple-eccentric for severe service)
• Control valves
• Cryogenic valves and oxygen valves
• High-temperature and high-pressure power plant valves, steam traps

Confirm pressure class, material grade, and end connection standard for your application before ordering.

Pricing and MOQ

JH Valve doesn’t publish an MOQ or price list, so both should be confirmed directly, and its severe-service focus places it in the mid-high tier rather than budget.

Positioning is engineering-led: cryogenic, oxygen, and metal-seated severe-service valves command higher pricing than commodity valves. Whether small trial orders are workable isn’t stated, so raise it directly, especially for custom or high-class items. Volume pricing isn’t disclosed. Cost drivers include material grade, pressure class (up to Class 4500), size (up to DN4000), seat and coating type (metal seat, WC flame plating), cleanliness requirements (oxygen service), and testing (cryogenic to -196°C, fugitive-emission, SIL).

• Is MOQ per valve type or total order value?
• Does pricing include third-party inspection and MTCs?
• Is this FOB, EXW, or DDP pricing?
• Are spare parts and after-sales support included?

Quality and Certifications

JH Valve holds a wide certification set (API 6D/600/602/609, fire safe API 607/6FA, API 624, ISO 15848, SIL, ABS, BV, CCS) and tests every valve independently, giving buyers strong documentation for critical service.

Risks to watch:

• Material certificates differing between sample and bulk order
• Coating or alloy not suited to actual service environment
• Pressure/temperature rating mismatches
• Documentation gaps on API/ANSI/DIN compliance
• Lead-time slippage on large or customized orders

Action: Request MTCs, third-party inspection reports, and factory audit access before large orders.

For oxygen service, insist on the cleanliness certification and cleaning procedure for the oxygen-valve line, not just the pressure test. JH operates a dedicated class 100,000 oxygen-valve cleaning workshop; ask for the degreasing and particulate-cleanliness records to the applicable standard (for example ASTM G93 or EIGA guidance), since residual hydrocarbons or particles in oxygen service are an ignition risk regardless of the valve’s mechanical rating.

Factory & Export Info

• Address: No. 6 Huangma Road (Factory 1), No. 30 Xiexin Avenue (Factory 2), No. 6 GCL Avenue (Factory 3, under construction), Funing Economic Development Zone, Jiangsu, China
• Factory Visits/Audits: Not specified; every valve independently certified per company
• Nearest Port/Airport: Jiangsu shipments commonly route via Shanghai or Lianyungang port, confirm with supplier
• Best Way to Contact: JH-valve@Janhenvalve.com, +86 13852307888

Social Media Channels

Importers can review Jiangheng Valve’s official social channels to examine factory activity, severe-service valve products, and public updates before making contact.

Verification note: These profiles were confirmed through official website links and matching Jiangheng branding, janhenvalve.com domain, contact details, factory information, and industrial valve content.

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