Industrial Controller
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Infinite Innovation, the Future of Industrial Control Systems
Infinite Innovation, the Future of Industrial Control Systems
PRODUCT POSITION:HOMEPRODUCT—FISHER 627-348
FISHER 627-348
Technical Parameters Category Parameter Specification / Description General Model 627-348 Type Pilot-Operated Backpressure/Relief Regulator Pressure & Capacity Body Pressure Rating (ANSI) Typically ANSI Class 300, 600, or higher. Max. Inlet Pressure (P1) Up to 1440 psig (99 bar) or higher, depending on body class. Setpoint Pressure Range Defined by the pilot spring. The "-348" code specifies a particular range, which could be in the hundreds of psig. Flow Capacity (Cv) Very High. Specific Cv depends on main valve size (e.g., 2", 3", 4", 6"). Can range from ~100 to over 1000. Construction & Materials Body Materials Carbon Steel (Standard), Stainless Steel, Other Alloys. Trim Materials Stainless Steel. Pilot Valve 627 Pilot (Relief Pilot) - senses upstream pressure. Connections & Environment Inlet/Outlet Connections Flanged (RF, RTJ) per ANSI standards. Vent Connection Flanged or threaded. Ambient Temperature Standard: -20°F to 150°F (-29°C to 66°C).
DESCRIBE
The Fisher 627-348 is a pilot-operated, spring-loaded backpressure and relief regulator designed for severe service applications requiring precise control of upstream pressure in high-flow or high-pressure systems. It is part of Fisher's 627 series, known for its ruggedness and reliability in protecting vessels, pipelines, and other process equipment from overpressure.
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