High Pressure Natural Gas Pipeline Safety Valve Manufacturers – Class 900
Designed to withstand pressures up to 15.3 MPa, these valves ensure pipeline integrity and protect downstream equipment from catastrophic failures.The main safety valve product names of China safety valve Network include:Explosion Wave Proof Safety Valve,F2-250/400 Main Safety Valve,Fan Engine Safety Valve,Freezer-used Safety Valve,Gas Specific Fall Lift Safety Valve,GA49H-DN20 Pulse Safety Valve,High Temperature and Pressure Fall Lift Safety Valve,Hydraulic Safety Valve,Impulse Safety Valve,Impulse Spring Safety Valve.
Price Reference for Class 900 Natural Gas Safety Valves
Class 900 safety valve prices vary based on material, size, and certification requirements:
Standard WCB material valves with API 526 design typically range from 10,000 to 20,000 CNY.
316 stainless steel or alloy steel valves for sour gas service command premium pricing reflecting enhanced material specifications.
Chinese manufacturers offer competitive pricing compared to European and American brands, especially for bulk orders.
Key factors affecting price include material grade, connection type, and NACE compliance requirements for sour gas service.
Leading Manufacturers
Shanghai Hugong Valve Co., Ltd specializes in API and ASME standard safety valves with Class 150 to Class 2500 ratings. Their products feature high quality cast steel and alloy steel materials.
Zhejiang Weige Valve Co., Ltd, located in Wenzhou, produces API 526 safety valves with Class 150 to Class 2500 ratings, offering WCB, LCB, and stainless steel options.
Reliable Valve Industry has over twenty years of experience in API and ASME safety valves, providing NACE-compliant configurations for sour gas applications.
Technical Specifications
Pressure and Temperature: Class 900 rating provides 15.3 MPa maximum working pressure at temperatures up to 260°C, with derating at higher temperatures per ASME B16.34.
Materials: Standard body materials include ASTM A216 WCB for general service, ASTM A352 LCB/LCC for low temperature applications, and ASTM A217 WC6/WC9 for high temperature requirements. For sour gas service, NACE MR0175 compliant materials are essential.
Design Features: API 526 compliant design, closed bonnet for hazardous media, full lift for maximum discharge capacity, and renewable valve seats for maintenance accessibility. Balanced bellows options are available for high back pressure applications.
Connections: Flanged connections (RF and RTJ) per ASME B16.5 are standard, with threaded and socket weld options available for smaller sizes.
Standards: API 526 for design, API 527 for seat tightness, ASME Section VIII Div. I for pressure vessel applications, and NACE MR0175 for sour gas service compliance.
Selection Considerations
When selecting a Class 900 safety valve, match the set pressure to your system's maximum allowable working pressure. Calculate required discharge capacity based on maximum flow potential. For sour gas service, verify NACE compliance with suitable C5 or modified alloy materials. Consider balanced bellows designs for high back pressure applications.
Summary
Class 900 natural gas safety valves are vital for pipeline safety, with Chinese manufacturers offering API compliant valves from 10,000 to 20,000 CNY. Selection requires careful attention to set pressure, material grade, and NACE compliance. Consulting with qualified manufacturers who provide certified material test reports and API performance documentation ensures reliable operation and regulatory compliance.
Do you still need to know or purchase the following safety valve products:
