Fisher 299H Series pressure reducing regulators provide a broad capacity for controlled pressure ranges and capacities in a wide variety of distribution, industrial and commercial applications. A 299H Series regulator has a pilot integrally mounted to the actuator casing. 299H Series regulators can handle inlet pressures up to 175 psi / 12.1 bar depending on orifice size.

Maximum Operating Inlet Pressure by Orifice Size
1/4 x 3/8 inch / 6.4 x 9.5 mm: 175 psig / 12.1 bar
3/8 inch / 9.5 mm: 175 psig / 12.1 bar
1/2 inch / 13 mm: 175 psig / 12.1 bar
3/4 inch / 19 mm: 150 psig / 10.3 bar
7/8 inch / 22 mm: 125 psig / 8.6 bar
1 inch / 25 mm: 100 psig / 6.9 bar
1-3/16 inch / 30 mm: 80 psig / 5.5 bar

Maximum Outlet (Casing) Pressure
66 psig / 4.5 bar

Minimum Differential Pressure for Full Stroke
1.5 psid / 0.10 bar d

Outlet Pressure Ranges
3.5-inches w.c. to 60 psig / 9 mbar to 4.14 bar in nine ranges

Pressure Registration
External Registration

Temperature Capabilities
-20 to 150°F / -29 to 66°C

Approximate Weight
21 Pounds / 10 kg