FISHER™ 377
Technical Parameters
Parameter Specification
Model Fisher 377
Type Pilot-Operated Safety Relief Valve (POSRV)
Operation Full Nozzle or Full Bore design
Set Pressure Range Wide range available, typically from 5 to 6000 psig (0.3 to 414 bar) depending on specific model and pilot.
Temperature Range -450°F to 1000°F (-268°C to 538°C)，取决于主阀和导阀的配置和材料。
Body Materials Carbon Steel (Standard), Stainless Steel, Alloy Steels
End Connections Flanged (Various ANSI Classes), Butt-Weld, Screwed (NPT)
Orifice Size Wide range per API standards, from D (0.110 in²) to T (6.380 in²) and larger.
Seat Tightness Bubble-tight (Typically ANSI Class IV or better) up to 98-99% of set pressure.
Pilot Options Overpressure, Vacuum, Thermal Fire, Combination, etc.
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