Technical Specifications Category Specification Model Type 64R Type Self-Operated Pressure Reducing Regulator Function To reduce a higher, variable inlet pressure to a stable, lower, constant outlet pressure. Power Source Self-Operated (Uses energy from the process fluid) Body Style Globe Valve Body End Connections Flanged (ANSI Class 125, 150, or 250 LB are common) or Screwed (NPT). Valve Size Range Typically 1/2 inch to 3 inches (DN15 to DN80). Trim Single-port, unbalanced plug. Various plug styles available for different flow characteristics. Outlet Pressure Ranges Available in multiple, field-adjustable spring ranges. Common examples include: • 5-50 psig (0.3-3.4 bar) • 20-100 psig (1.4-6.9 bar) • 50-200 psig (3.4-13.8 bar) The specific range is determined by the spring installed. Maximum Inlet Pressure Varies with body class. For a Class 150 body, it is typically 275 psig (19 bar) at 100°F. Temperature Limits Standard with Buna-N diaphragm: -20°F to +180°F (-29°C to +82°C). Higher temperatures possible with special diaphragm materials. Materials of Construction Body: Cast Iron (standard), Ductile Iron, Cast Steel. Trim (Plug/Seat): Stainless Steel (standard). Diaphragm: Buna-N (standard).