Unlike conventional spring-loaded safety valves, pilot operated designs offer superior performance in high back pressure and high-flow applications. This article provides pricing information and essential selection parameters for DN150 carbon steel pilot operated safety valves.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,Pressure Safety Valve,Quick Switching Safety Valve,Spring Low Lift Safety Valve,Vacuum Negative Pressure Safety Valve,Water Heater Safety Valve,YD Type Bursting Disc,Pulse Safety Valve.

Price Reference for DN150 Carbon Steel Pilot Operated Safety Valve

Prices for DN150 carbon steel pilot operated safety valves vary based on pressure rating and configuration:

Standard PN16 carbon steel pilot operated safety valves (WCB body) are available from Chinese manufacturers starting at approximately 1,200 CNY per unit for standard configurations .

Premium imported pilot operated safety valves from established brands typically range higher, with a representative valve listed at approximately 792 USD (around 5,500 CNY) for comparable specifications .

For higher pressure ratings such as Class 300 or Class 600, prices increase proportionally, with DN150 valves typically in the higher range of the product spectrum .

Key factors affecting price include pressure rating (PN16 to PN100 or Class 150 to Class 600), certification requirements, trim material options, and order quantity.

Technical Specifications for DN150 Pilot Operated Safety Valve

Pressure and Temperature: Available in PN16 to PN100 (1.6MPa to 10.0MPa) or Class 150 to Class 600 ratings. Temperature capability up to 250°C for standard carbon steel WCB construction .

Materials: Valve body from ASTM A216 WCB carbon steel for standard service, with WCC available for low temperature applications . Valve trim typically features stainless steel components with soft sealing options .

Design Features: Pilot operated design provides excellent sealing at pressures close to set pressure (up to 97%), rapid opening, and quick reseating after discharge . The design is insensitive to back pressure, eliminating the need for balanced bellows . Full lift capability ensures maximum discharge capacity.

Connections: Flanged ends per ASME B16.5 or GB/T 9113 standards . DN150 (6") is a standard size for petrochemical applications .

Standards: API 526 design, API 527 seat tightness, and ASME Section VIII for pressure vessel applications .

Petrochemical Engineering Applications

Pilot operated safety valves serve critical functions in refinery pressure vessels, gas processing facilities, natural gas pipeline systems, high-pressure reactors, and separator and scrubber vessels. The design is particularly suited for high back pressure applications and installations with limited space .

Selection Considerations

When selecting a DN150 carbon steel pilot operated safety valve, match set pressure to system MAWP and confirm back pressure compatibility. Verify temperature rating exceeds maximum operating temperature and discharge capacity meets maximum flow potential. For corrosive media, specify stainless steel trim.

Summary

DN150 carbon steel pilot operated safety valves are essential for petrochemical overpressure protection, with prices starting from approximately 1,200 CNY for PN16 models from Chinese manufacturers. Pilot design offers superior sealing, rapid response, and back pressure insensitivity. Selection requires careful evaluation of set pressure, temperature, and flow requirements. Consulting with qualified manufacturers who provide certified performance data is strongly recommended.

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