Typical Specifications Parameter/Condition Specification Model Type 107 (Size 1 and Size 2 are the most common) Orifice Size Size 1: 1/4 inch (6.4 mm) Size 2: 3/8 inch (9.5 mm) Inlet Supply Pressure Up to 250 psig (17.2 bar) Outlet Pressure Range 5 to 150 psig (0.3 to 10.3 bar) [Adjustable by spring] Maximum Flow Coefficient (Cv) Size 1: ~ 1.0 Size 2: ~ 2.5 Body Material Aluminum (Standard), Ductile Iron (Optional) Connection Sizes 1/4" NPT (Size 1) / 3/8" NPT (Size 2) and 1/2" NPT (for some versions) Temperature Limits Standard Buna-N Elastomer: -20° to 200°F (-29° to 93°C) Optional Viton Elastomer: -20° to 300°F (-29° to 149°C) Approvals Typically meets API 6D requirements.