Fisher CSB700 Pressure Reducing Regulators

Fisher CSB700 Series direct-operated, spring-loaded regulators are engineered to fit a multitude of pressure reducing applications. This flexibility is provided by the numerous body sizes and end connections, outlet pressure settings in external pressure registration. The CSB700 Series offers multiple overpressure protection options to meet your application requirements.

Body Sizes and End Connection Styles

Ductile Iron: 1-1/2 or 2 NPT, Rp 1-1/2 or 2, NPS 2 / DN 50 CL125 FF, NPS 2 / DN 50 CL150 FF, NPS 2 / DN 50 PN 10/16, NPS 1-1/2 / DN 40 PN 16 Slip-On
WCC Steel: 1-1/2 or 2 NPT, Rp 1-1/2 or 2, NPS 2 / DN 50 CL150 RF, NPS 2/ DN 50 PN 10/16

Maximum Operating Inlet Pressure

Integral Strength (IS): 5 bar / 73 psig
Differential Strength (DS): 16 bar / 232 psig

Maximum Emergency Inlet Pressure

Integral Strength (IS): 5 bar / 73 psig
Differential Strength (DS): 20 bar / 290 psig

Outlet Pressure Range

9 mbar to 4.0 bar / 0.13 to 58 psig

Maximum Emergency Outlet Pressure (Casing)

5.0 bar / 73 psig

Max Outlet Pressure to Avoid Internal Metallic Parts Damage

1.5 bar / 21.8 psig - not to exceed maximum emergency outlet

Temperature Capabilities

According to PED Standards: -20 to 66°C / -4 to 151°F
Non-PED: -30 to 66°C / -22 to 151°F

Approximate Weights

Threaded Body:
Type CSB700: 13 kg / 29 Pounds
Type CSB704: 14 kg / 31 Pounds
Flanged Body: Add 5.2 kg / 11 Pounds to weights listed