Technical Specifications The following specifications are based on a typical Fisher CSB600 series product data sheet. Category Specification Type Pilot-Operated Safety Relief Valve (POSRV) Service Gas, Vapor, Liquid, and Two-Phase flow Design & Certification ASME Section VIII (UV Stamp available), API 520 Orifice & Size Various orifice sizes available (e.g., F, G, H, J, etc. per API standards). Body Sizes: 1" x 2" (D x E) through 4" x 6" (D x E) and larger. Connections Flanged (150# to 2500# RF/RTJ) is standard. Set Pressure Range Wide range, typically from 15 psig (1 bar) up to 6000 psig (413 bar) depending on specific pilot and body. Temperature Range Standard: -20°F to 300°F (-29°C to 149°C) High-Temp: Available for services up to 1000°F (538°C) with special pilots and design. Body Materials Carbon Steel (Standard), Stainless Steel, Chrome-Moly, and other alloys. Pilot Types Standard Relief, Balanced Bellows (for backpressure), Vacuum Relief, Temperature Actuated, Electric Actuation. Leakage Bubble-tight up to 98% of set pressure.
