Fisher CS800 Series direct-operated, spring-loaded regulators provide pressure-reducing applications for commercial and light industrial installations. This flexibility is provided by the numerous body sizes and end connections, outlet pressure settings, orifice sizes, as well as the option for internal or external pressure registration. In addition to application flexibility, the CS800 Series offers multiple overpressure protection options to meet your demands on application requirements.

Body Sizes and End Connection Styles:1-1/4, 1-1/2, and 2 NPT

Maximum Allowable Inlet Pressure:Emergency: 175 psig / 12.1 bar

Maximum Outlet Control Pressure:Emergency (Casing): 15 psig / 1.0 bar To Avoid Internal Parts Damage: 3 psig / 0.21 bar differential above outlet pressure setting

Orifice Sizes

1/4-inch / 6.4 mm
3/8-inch / 9.5 mm
1/2-inch / 13 mm
5/8-inch / 16 mm
3/4-inch / 19 mm
7/8-inch / 22 mm
1-inch / 25 mm
1-3/8-inches / 35 mm

Outlet Pressure Range:3.5-inches w.c. to 10 psig / 9 to 0.69 bar

Pressure Registration:Internal or External

External Registration Connection:3/4 NPT

Temperature Capabilities:-20 to 150°F / -30 to 66°C

Capacity:Up to 36 270 SCFH / 974 Nm3/h