Specifications: Model: FB Pressure Regulator Type: Pilot-Operated Functions: Pressure Reducing, Backpressure, Relief Sizes & Connections: Valve Size: 1" to 8" (DN 25 to DN 200) Pressure Class: ANSI 125 through 600 End Connections: Flanged (RF, RTJ) Performance & Ratings: Pressure Rating: Dependent on body class (e.g., for ANSI 150: 275 psi; for ANSI 300: 720 psi). Temperature Range: -20° to 450°F (-29° to 232°C) [Standard; special packs extend range] Set Pressure Range: Varies widely based on the specific pilot and spring used. Accuracy: High, with droop as low as 2-5% of the set point depending on the pilot. Pilot Options: Proportional Pilot: Standard for most pressure reducing and backpressure applications. Blind Pilot: For applications where the pilot does not need to sense a remote signal. Solenoid Stop Pilot: Allows for remote shutoff of the regulator. Dome-Loaded Pilot: For very precise set point control using an external air supply. Materials of Construction: Body: Carbon Steel (WCB) [Standard], Stainless Steel (CF8/CF8M), Ductile Iron. Trim (Plug, Seat): 316 Stainless Steel (standard), with optional hardened trim for erosive service. Diaphragm: Nylon-reinforced elastomer.