Technical Parameters Category Parameter Specification / Description General Model Series 1301 Type Direct-Operated Pressure Reducing Regulator Pressure Ratings Maximum Inlet Pressure (P1) 5 psig (0.34 bar) for most models. Outlet Pressure Range (P2) Adjustable: Typically low pressures, from 3" w.c. to 14" w.c. (0.75 kPa to 3.5 kPa) or slightly higher, depending on the specific spring. Pressure Rating 125 psig (8.6 bar) Body Rating. Flow & Capacity Flow Capacity (Cv) Very Low, typically around 0.02 to 0.04, designed for small flows. End Connections 1/4" NPT or 1/2" NPT (Internal Pipe Thread) - Specified by the model suffix. Materials & Environment Body Material Aluminum Internal Parts Stainless Steel, Brass Diaphragm Material Elastomer (e.g., Neoprene) Seat Material Elastomer (e.g., Buna-N) for tight shut-off. Ambient Temperature Standard: -20°F to 150°F (-29°C to 66°C)
