Technical Parameters Parameter Specification / Options Series Fisher M Series Type Self-Operated Pressure Regulator Primary Function Pressure Reducing, Back Pressure, Differential Pressure Body Materials Cast Iron (Standard), Ductile Iron, Bronze, Carbon Steel, Stainless Steel End Connections Screwed (NPT), Flanged Size Range 1/4" to 3" (DN 8 to DN 80) Maximum Inlet Pressure Varies by model and material, up to 400 psig (28 bar) or higher. Outlet Pressure Range Multiple ranges available via different springs, e.g., 3 to 50 psig (0.2 to 3.4 bar), etc. Temperature Range -20°F to 450°F (-29°C to 232°C), depending on seal materials.
