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Precision Industrial Valves for Global Applications

Wenzhou Yiyu Industry Co., Ltd. – ISO9001, API-6D, CE, and PED certified manufacturer of high-performance valves since 1993. Trusted by industries worldwide for reliability, durability, and precision engineering.

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Engineered for Excellence Since 1993

Wenzhou Yiyu Industry Co., Ltd. is a vertically integrated valve manufacturer based in Wenzhou, China. Founded in 1993, we began as a specialized steel foundry and have evolved into a full-cycle production facility capable of casting, machining, assembly, and inspection—all under one roof.

Our product range includes carbon steel, stainless steel, and alloy steel valves such as Titanium and Nickel series, serving industries from oil & gas to marine and chemical processing. With decades of experience, we deliver precision-engineered solutions trusted across 60+ countries.

60+

Countries Served

30+

Years in Industry

Yiyu Valve Manufacturing Facility

Premium Industrial Valve Solutions

Engineered for performance, durability, and compliance with international standards.

3PC Threaded Ball Valve

3PC Threaded Ball Valve

With ISO5211 Direct Mounting Pad

  • Material: Forged Steel
  • Standard: ASME B16.34
  • Pressure: Class 150-600
  • End Connection: NPT/BSP
Trunnion Ball Valve

Trunnion Ball Valve

High-Pressure Floating Design

  • Size Range: 2"–48"
  • Pressure: ANSI 150–2500
  • Body: Cast/Welded Steel
  • API 6D Certified
Stainless Steel Gate Valve

Stainless Steel Gate Valve

Rising Stem, Bolted Bonnet

  • Material: SS304/SS316
  • Standard: API 600, BS 1414
  • Pressure: 150LB–2500LB
  • Flanged/Welded Ends
Globe Valve

BS1873 Flanged Globe Valve

150–300 Class, Rising Stem

  • Trim: SS316, Stellite
  • Applications: Throttling, Control
  • Face-to-Face: BS1873
  • Tested per API 598
Knife Gate Valve

Resilient Seat Knife Gate Valve

Wafer Type, AWWA C517

  • Size: 2"–48"
  • Soft Seated, Zero Leakage
  • Slurry & Sludge Applications
  • ISO5211 Mounting Pad
Check Valve

Stainless Steel Check Valve

Swing Type, Flanged Ends

  • Material: CF8M, CD4MCu
  • Prevents Backflow
  • API 598 Tested
  • 150LB–600LB
Strainer

ASME B16.34 Flanged Strainer

Y-Type, Carbon & Stainless Steel

  • Mesh: 20–100
  • Class 150–300
  • Easy Maintenance
  • API & ISO Compliant
Steam Trap

Flange Ball Float Steam Trap

Automatic Condensate Removal

  • Max Pressure: 16 bar
  • Connection: Flanged
  • Capacity: Up to 2000 kg/h
  • Stainless Steel Internal
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Why Choose Yiyu Valve?

Superior engineering, global compliance, and unmatched reliability.

Vertical Integration

Full control from casting to final inspection. We manage smelting, wax modeling, machining, and testing in-house, ensuring consistent quality and faster turnaround.

Global Certifications

Certified to ISO9001:2015, ISO14001, OHSAS18001, API-6D, PED 2014/68/EC (CE), and TS pressure pipe standards. Compliant with international safety and quality benchmarks.

Global Reach

Trusted by clients in Africa, South America, Europe, and Asia. Regular participation in international exhibitions including Pumps & Valves Africa and CHINA MACHINEX Brazil.

International Certifications

We meet the highest global standards in quality, safety, and environmental management.

ISO 9001

ISO 9001:2015

ISO 14001

ISO 14001

API 6D

API 6D Certified

CE Mark

PED 2014/68/EC (CE)

30+

Years of Experience

60+

Countries Served

1000+

Valve Models

1993

Year Founded

Frequently Asked Questions

What materials do you offer for your valves?

We manufacture valves in carbon steel, stainless steel (SS304, SS316), alloy steel, titanium, nickel, and other specialized alloys for corrosive or high-temperature environments.

Are your valves API and CE certified?

Yes, we hold API-6D certification and PED 2014/68/EC (CE) marking. We also comply with ISO9001:2015, ISO14001, and OHSAS18001 standards.

What is your production capacity?

Our integrated facility includes casting, machining, assembly, and testing workshops, enabling us to produce over 50,000 units annually with strict quality control.

Do you offer OEM/ODM services?

Yes, we provide custom valve solutions including OEM branding, special materials, and non-standard designs based on client specifications.

How can I request a quote or catalog?

Visit yiyuvalve.com to access our full product catalog and contact information. Our team responds to inquiries within 24 hours.

Get in Touch

Reach out to our team for quotes, technical support, or product inquiries.

Contact Information

  • +86-577 868 99 212
  • +86-130 577 44 163
  • [email protected]
  • Mr. Burt Dai (Sales Contact)
  • Binhai Economic Development Zone, Longwan District, Wenzhou, China 325025

Connect With Us

We participate in global exhibitions including Pumps & Valves Africa, Titanium Conference (USA), and CHINA MACHINEX Brazil.

For direct communication:

  • Skype: burtdai
  • Fax: +86-577-866 12 090
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