- info@hhsv-valve.com
- +86-0577-67987591
Menu
Safety valves for industrial projects
Pressure Relief Valve Manufacturer in China
- ASME / API Related Standards Support
- Factory Tested Before Shipment
- Calibration Reports Available
- Spring-loaded, Pilot-operated & Bellows Types
Typres of Valves
Pressure Relief Valve Product Range
Relevant ASME/API standards support includes API 520, API 526, API 527 and ASME Section VIII. UV stamp is available for applicable Type 42 safety valves.
Spring-Loaded Safety Valve
Pilot-Operated Pressure Safety Valve
Bellows Back Pressure Safety Valve
Certification
Standards & Certification Documents for Project Procurement
Based on project parameters—such as inlet/outlet sizes and end connections, set pressure, opening pressure, back pressure, body and trim materials, temperature, and medium—or based on data sheets, we provide valve selection support, comprehensive certifications, and technical documentation to facilitate EPC projects, support valve distributors, and assist with industrial procurement approvals.
20+
Years of Experience
Project Cases
Our pressure relief valves have been supplied to industrial projects in Dubai, Turkey and Vietnam, covering pressure protection applications in industrial systems and equipment.
Dubai
Dubai Industrial Valve Supply Project
这是示例文本，单击 “编辑” 按钮更改此文本。
Turkey
Turkey Safety Valve Project
这是示例文本，单击 “编辑” 按钮更改此文本。
Vietnam
Vietnam Industrial Equipment Project
这是示例文本，单击 “编辑” 按钮更改此文本。
About Us
China Manufacturer of Pressure Relief Valves and Safety Valves
For overseas industrial projects that require clear specifications, factory testing and traceable documentation, we support EPC companies, valve distributors and industrial procurement with pressure relief valve solutions for oil & gas, chemical, power and industrial equipment applications.
Why Choose us
Support from Selection to After-Sales.
Your pressure relief valve project may require more than product supply. We support valve selection, production, testing, documentation, delivery coordination and after-sales traceability according to your project requirements.
Pre-Sales Support
Share your working conditions, and we will help review suitable valve types, materials and basic specifications.
Custom Production
Valves can be produced according to your required type, size, pressure, material and connection standards.
Document Support
Calibration reports, test records and relevant documents can be provided upon request for project review.
Factory Testing
Applicable valves are tested before shipment, including set pressure, seat tightness and reseating pressure tests.
Delivery Coordination
Delivery is arranged according to order quantity, specifications and project schedule, usually within 5–55 days.
After-Sales Service
Each safety valve has a unique serial number for traceability and 12-month warranty support.
Factory Tour
A closer look at our production, assembly and testing process.
After sales
Factory Testing, Traceability & After-Sales Support
Reliable testing, clear documentation and serial number traceability help reduce approval delays and support site acceptance for pressure relief valve projects. Applicable valves are tested before shipment and backed by a structured 12-month warranty process.
Factory Testing
Before shipment, applicable safety valves are tested according to relevant ASME/API procedures, including set pressure test, seat tightness test and reseating pressure test. Official calibration reports can be provided.
Unique Serial Number Traceability
Each safety valve has a unique serial number for product records, testing information and after-sales traceability.
12-Month Warranty
From the date of supply, a 12-month warranty applies. If a failure or defect is confirmed to be caused by manufacturing quality issues, the customer may provide failure videos or photos together with the corresponding serial number. After review, free repair, replacement parts or full valve replacement may be provided as appropriate.
FAQ
Frequently Asked Questions Before Inquiry
The following questions help your team confirm standards, UV stamp availability, calculation sheets, materials, delivery time, testing documents and suitable applications.
Yes. After quotation, if molecular weight and required working data are provided, calculation sheets can be prepared according to the corresponding specifications.
UV stamp is available for applicable Type 42 safety valves. Please confirm the valve type and service conditions before ordering.
The valves comply with relevant ASME requirements. Current certification mainly applies to gas service safety valves without adjusting rings.
Carbon steel and stainless steel are currently available. Ductile iron, cast iron, bronze and brass are not currently offered.
The valves are suitable for chemical, machinery, energy and general industrial pressure protection applications. They are not recommended for viscous slurry service, as such conditions may damage the valve after opening.
Delivery time is usually 5–55 days, depending on valve type, specification, material and order quantity.
Factory-Tested Pressure Relief Valves with ASME/API Standards Support
Useful Link
Send Your Requirements of Valves
Share your project data for quotation, valve selection or documentation support.
Copyright © 2026 Henghua Valve Co., Ltd , All rights reserved.