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The Creative Safety Valve Manufacturer in China

Your premier choice for all safety and relief valve needs. Overpressure solutions engineered for reliability, precision, and industrial excellence.

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About TANHOV

Tanhov Industrial Co., Ltd (formerly Zhejiang Tianhe Valve Co., Ltd) is a leading safety valve manufacturer located in Oubei Town, Wenzhou City, Zhejiang Province — famously known as "The Town of Pump & Valve in China."

As a fully integrated manufacturer, we combine scientific research, design, production, distribution, and after-sales service with decades of rich manufacturing experience. Our commitment to innovation and quality has made us a trusted partner across global industries.

We specialize in engineering overpressure protection systems that ensure the safety, efficiency, and compliance of industrial processes worldwide.

168+
Projects Done
26
Countries Exported
125+
Team Members
7x24
Support Hours
TANHOV Manufacturing Facility

Our Product Range

Engineered for precision, durability, and compliance with international standards including API, ASME, and DIN EN.

API & ASME Safety Valve

API & ASME Safety Valve

High-performance safety valves designed to meet API and ASME standards for oil, gas, and petrochemical applications.

  • • Conventional Type
  • • Bellows Type
  • • Pilot Operated
Threaded Ends Safety Relief Valve

Threaded Ends Safety Relief Valve

Compact and reliable relief valves with threaded connections for easy installation in tight spaces.

  • • Cap Type
  • • Lever Type
  • • NPT/BSP Threads
Steam Safety Valve

Steam Safety Valve

Specialized valves for steam systems, available in high-pressure (HP) and low-pressure (LP) configurations.

  • • HP Steam Models
  • • LP Steam Models
  • • High-Temp Resistant
DIN EN Safety Valve

DIN EN Safety Valve

European standard-compliant safety valves for industrial and process applications across Europe and beyond.

  • • DIN 3320 Certified
  • • Flanged Connections
  • • Full Lift Design

Strong Acid Resistance Safety Valve

Corrosion-resistant valves constructed with PTFE, Hastelloy, or special alloys for aggressive chemical environments.

  • • PTFE Lined
  • • Hastelloy C276
  • • Ideal for Chemical Plants

Rupture Disc

Non-reclosing pressure relief devices for fast response and zero leakage in critical systems.

  • • Forward & Reverse Acting
  • • Multi-Plate Options
  • • Custom Burst Pressures
A40Y

A40Y - High Temp Safety Valve

Cap type with cooling system, designed for high-temperature fluid applications in power and refining.

  • • Cooling Fins
  • • Up to 550°C
  • • API 526 Compliant
A42Y

A42Y - Closed Bonnet Safety Valve

Closed bonnet with cap, full lift design ideal for hazardous or toxic media containment.

  • • Zero Emission Design
  • • Bellows Seal Option
  • • ASME Section VIII
A41H

A41H - Low Lift Safety Valve

Closed bonnet with cap, low lift configuration for applications requiring minimal discharge.

  • • Pop Action
  • • Compact Design
  • • Steam & Air Service
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Our Services

From design to delivery and beyond, we provide comprehensive support to ensure your safety valve systems perform flawlessly.

Custom Engineering

Tailored valve solutions for unique pressure, temperature, and media requirements.

Testing & Certification

Full compliance testing including API 527, ASME V, and factory hydro/pneumatic tests.

Global Logistics

Reliable shipping to over 26 countries with documentation and customs support.

24/7 Technical Support

Dedicated team available round-the-clock for troubleshooting and advice.

Technical Resources

Access our engineering documentation for product selection, installation, and maintenance.

Product Catalogue

Complete range of safety valves with specifications, materials, and dimensions.

Operating Manual

Installation, operation, and maintenance guidelines for all TANHOV valves.

Selection Guide

Helps engineers choose the right valve based on pressure, temperature, and media.

Latest News

Company News

TANHOV Rebrands from Zhejiang Tianhe Valve

Tanhov Industrial Co., Ltd (formerly Zhejiang Tianhe Valve Co., Ltd) continues its legacy of excellence under a new identity focused on innovation and global service.

May 17, 2021
Industry Insight

The Development of Safety Valves

From ancient Chinese steam devices to modern API-certified systems — the evolution of overpressure protection technology.

May 17, 2021
Technical

Safety Valve Introduction

A safety valve is a critical mechanism for the automatic release of substances when pressure or temperature exceeds preset limits.

May 17, 2021

Contact Us

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

Address

Sanqiao Industrial Zone, Oubei, Wenzhou City, Zhejiang Province, China

Contact Person

Jacob Zhou

Phone

+86 577 2182 8858 (Tel)

+86 134 5484 5566 (Mobile/WhatsApp)

WeChat

+86 134 5484 5566

Get in Touch

For detailed inquiries, please visit our official website to submit your request.

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