General Specifications: Model: 3620JP Pilot-Operated Safety Relief Valve Design Standard: JIS B 8210 Operation Type: Pilot-Operated Main Valve Specifications: Valve Size: Larger JIS sizes to handle higher flows (e.g., 80A, 100A, 125A, 150A, 200A). Pressure Rating: JIS high-pressure classes (e.g., 16K, 20K, 30K, 40K, 63K). End Connections: JIS Flanges (e.g., JIS 20K, 30K RF flange facing). Orifice Area: Larger orifice sizes to meet high-capacity demands. Pilot Specifications: Pilot Types: Standard Pilot: For general steam and gas service. Balanced Piston Pilot: For applications with high or variable backpressure. Liquid Service Pilot: For liquid applications. Set Pressure Range: Capable of higher set pressures compared to the 3610JP series. Performance Characteristics: Accumulation (Overpressure): Typically 3% for steam (per JIS B 8210). Blowdown: Adjustable. Backpressure Capability: Standard: Limited built-in backpressure capability. Balanced: Can handle high levels of variable backpressure (e.g., up to 50% or more of inlet pressure) when equipped with a balanced pilot. Materials of Construction: Main Valve Body: SCPH 2 Cast Steel (Standard), with options for higher grades like SCPH 32 for high-temperature service. Internals (Piston, Seat): Stainless Steel with optional hardened trim for erosive services. Pilot: Stainless Steel and Brass.
