Application Guide
Flow Safe is proud to introduce the next level of enhanced performance with direct-spring, high-performance, pilot-operated pressure relief devices. Our products are reliable, reputable, and long lasting; designed by engineers with over 52 years of experience in pressure relief device technology.
These devices offer tighter lift tolerance, lower blowdown, improved mechanical integrity and superior capacities. When compared to more conventional pressure relief devices, ours are smaller and more cost-effective!
What pressure? Flow Safe’s pressure relief devices are the longest lasting ones in the business!
The application guide below will help identify exactly where our products can be used effectively.
Application Guide
| Valve Model | Service | Operation | Pressure Range | Application |
|---|---|---|---|---|
| F84M F85M | Gas / Vapor | Direct Spring, Snap Acting | 15 - 10,313 psig (1.03 - 711 barg) | Storage tanks Thermal relief instrument panels Compressors |
| F84 F85 | Gas / Vapor | Direct Spring, Snap Acting | 15 - 9,612 psig (1.03 - 662 barg) | Air/gas equipment Processes equipment Thermal relief |
| F84L | Liquid | Direct Spring, Balanced | 30 – 24,277 psig (2.1 - 1674 barg) | Lube oil Dowtherm Systems with variable or constant backpressure |
| F88 | Gas / Liquid / 2-Phase | Direct Spring, Balanced | 50 – 8,382 psig (3.5 - 578 barg) | Systems with variable or constant backpressure |
| F70PR | Gas / Liquid / 2-Phase | Pilot Operated, Modulating | 10” wc – 285 psig (.025 – 19.6 barg) | Gas regulator Meter protection Positive displacement blowers |
| F70VP | Gas / Vapor | Pilot Operated (modulating) or Weighted Piston (fixed set) | 0.36 to 14.7 psiv (-0.025 to -1.01 barg) | Low-pressure storage tanks Process vacuum systems Blower suction |
| F70U | Gas / Liquid / 2-Phase | Unloading, Manual/Solenoid | 5 – 285 psig (.35 – 19.6 barg) | Unloading valves (dump valves) Compressors Blowers Fire protection |
| F7200 F8200 | Gas / Vapor | Pilot Operated, Snap Acting, Non-Flowing | 15 – 6,000 psig (1.03 - 413 barg) | Ambient and Cryogenic service (flashing) |
| F7300 F8300 | Gas / Liquid / 2-Phase | Pilot Operated, Modulating, Flowing | 15 – 6,000 psig (1.03 - 413 barg) | Ambient and Cryogenic service |
| F7500 F8500 | Gas / Liquid / 2-Phase | Pilot Operated, Modulating, Non-Flowing | 15 – 6,000 psig (1.03 - 413 barg) | Ambient and Cryogenic service |
| F9000 | Liquid | Pilot-less, Modulating | 100 – 3705 psig (6.9 – 255 barg) | Product pipeline with liquid surge or hammer |