Key Parameters Category Parameter Name Description & Typical Values Valve Specifications Valve Size 1/2" to 3" (DN 15 to DN 80) End Connections Flanged (ANSI 125, 150, 200, 300 lbs) or Screwed (NPT) Body Materials Cast Iron (Standard), Ductile Iron, Carbon Steel, Stainless Steel Pressure Ratings Maximum Inlet Pressure Varies by size and body material. Can be up to 400 psig (28 bar) or higher. Outlet Pressure Range Adjustable via spring. Multiple spring ranges available, e.g.: • 3 to 25 psig (0.2 to 1.7 bar) • 20 to 100 psig (1.4 to 6.9 bar) • 75 to 200 psig (5.2 to 13.8 bar) Pressure Rating ANSI Class 125, 150, 200, 300, etc. Internal Parts Trim Materials Stainless Steel (Standard poppet and seat). Diaphragm Material Reinforced Elastomer (e.g., NBR). Performance & Environmental Flow Capacity (Cv) Relatively high for its size. Consult Cv tables. Example: A 2" 630R can have a Cv of ~40-50. Leakage Class Class II (standard metal-to-metal seat). Class IV (with optional soft seat). Temperature Limits Standard: -20°F to 150°F (-29°C to 66°C). Higher temperatures possible with specific components.
