Technical Specifications Category Specification Type Self-Operated, Spring-Loaded Pressure Regulator Models Pressure Reducing: CS221, CS222, CS224 Back-Pressure: CS261 Service Steam, Air, Industrial Gases (e.g., N2, CO2) Size & Connections 1/2 in. to 2 in. (15 mm to 50 mm) NPT (Standard) or Flanged (depending on model) Maximum Inlet Pressure (P1) Up to 400 psig (28 bar) depending on model and body rating Outlet Pressure (P2) Range Adjustable within a range, e.g., 3 to 125 psig (0.2 to 8.6 bar) or 20 to 200 psig (1.4 to 14 bar), depending on the spring range used. Temperature Range Standard Diaphragm: -20° to 180°F (-29° to 82°C) High-Temp. Diaphragm: Up to 406°F (208°C) for steam service Body Materials Ductile Iron (Standard), Cast Steel, Stainless Steel Trim Materials Stainless Steel (standard) Leakage Class ANSI Class IV (Metal Seat) or Class VI (Soft Seat, if equipped)
