Fisher 133 Series Pressure Reducing Regulators

Fisher 133 Series direct-operated regulators are ideal for industrial and commercial applications supplying gas to furnaces, burners, and other appliances. A balancing system enables the regulator to control gas pressure accurately for maximum combustion efficiency despite varying inlet pressures.

Body Size and End Connection Styles

Cast Iron: 2 NPT, NPS 2 / DN 50 CL125 FF flanged end connections
Steel Body: 2 NPT, NPS 2 / DN 50 CL150 RF flanged end connections

Operating Maximum Inlet Pressure

Type 133L: 125 psig / 8,6 bar
Type 133H: 60 psig / 4,1 bar
Type 133HP: 150 psig / 10,3 bar

Emergency Maximum Inlet Pressure

Type 133L: 125 psig / 8,6 bar
Type 133H: 125 psig / 8,6 bar
Type 133HP: 150 psig / 10,3 bar

Maximum Outlet (Casing) Pressure

15 psig / 1,0 bar

Outlet Pressure Range

2-inch w.c. to 10 psig / 5 mbar to 0,69 bar in 9 ranges
Type 133HP: 2 to 60 psig / 0,14 to 4,1 bar in seven ranges

Temperature Capabilities

-20°F to 150°F / -29° to 66°C

Approximate Weights

Type 133H End Connection Style:?35?Pounds / 16 kg
Type 133L End Connection Style: 40 Pounds / 18 kg
Type 133HP: NPT: 56.5 pounds / 26 kg; CL125 RF and CL250 RF: 62.5 pounds / 28 kg