Fisher 299H Series Pressure Reducing Regulators

Fisher 299H Series pilot operated pressure reducing regulators provide controlled pressure and capacities for distribution, industrial and commercial applications with inlet pressures up to 175 psi/12.1 bar. Type 299HV with Type VSX8 are used in applications where the gas supply must be shutoff. The 299HR integral token relief alerts you to an increase in downstream pressure beyond the regulator set point. Type 299HVR token internal relief valves to relieve minor thermal expansion overpressure.

Body Sizes and End Connection Styles

Sizes: NPS 1-1/4, NPS 1-1/2, NPS 2 / DN 50
Connections: NPT, CL125 FF Flanged, CL250 RF flanged, PN 10/16 flanged

Maximum Operating Inlet Pressure by Orifice Size

1/4 x 3/8 in. / 6.4 x 9.5 mm : 175 psig / 12.1 bar
3/8 in. / 9.5 mm : 175 psig / 12.1 bar
1/2 in. / 13 mm : 175 psig / 12.1 bar
3/4 in. / 19 mm : 150 psig / 10.3 bar
7/8 in. / 22 mm : 125 psig / 8.6 bar
1 in. / 25 mm : 100 psig / 6.9 bar
1-3/16 in. / 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

Internal, External, or Dual Registration

Temperature Capabilities

-20 to 150°F / -29 to 66°C

Approximate Weight

21 lbs / 10 kg