The Elster American Meter 1800C Series pressure regulators are designed to control natural gas, air, nitrogen, carbon dioxide, propane vapor, and other non-corrosive gases in residential, light commercial, and small industrial applications.
Outlet pressures between 3.5" W.C. and 2 PSIG are available. Operating temperature range is -20°F to 150°F (-30°C to 65°C). Maximum flow rate is 2500 SCFH (70.8 m3/h).
All models conform to ANSI Code B109.4-1998, and CGA Service-Type Regulator Specification CAN/CGA-6.18-M95.
• Variety of interchangeable orifices and spring ranges
• 90 Degree (Right Angle), 180 Degree (Straight-Flow), or Offset Valve Body
(See photo below)
• Wide range of valve body connection sizes
The regulator vent opening should face downward (6 o'clock) to minimize the chance of blockage from ice and snow. If not possible, a 3/4" NPT plastic, 90° vent elbow (part number 78041P025) and separate protective screen (part number 70400P017) may be screwed into the vent to provide the necessary protection.
The E.C. orifice is recommended for installations where the inlet pressure may vary over a wide range. The E.C. orifice is available in two sizes: 1/8" x 3/16" and 3/16". The capacities of these orifices are the same as the standard orifice of the same size.
Full Capacity Relief Valve Full capacity internal relief valve standard on all models. (See Performance Graphs on page 9)
SplashguardsUV stabilized, weather-resistant, resin device that protects the vent screen from splashes while providing a large external vent opening to keep regulators working properly.
Safety Shutoff Devices Overpressure Shutoff (OPSO) — Operates independently. The OPSO will shut off the gas supply in the event of a serious downstream pressure build-up. These are available in two pressure ranges on the Models 1843C and 1843C-HC.
When the outlet pressure exceeds the OPSO set point, the pressure under the OPSO diaphragm (A) compresses the pressure spring (B) forcing the diaphragm stem (E) upwards and releasing plunger (D). This permits the shut-off spring (F) to force the shut-off disc (G) against the back side of the special double-ended orifice.
Universal Safety Shutoff Assembly (USSA) — USSA protects the downstream piping from both over- and under-pressure conditions by shutting off the gas flow at the inlet side of the regulator orifice. Both Over- and under-pressure shut-off set points are adjustable depending on spring ranges selected.
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Elster American Meter 1 NPT model 1813C gas regulator with 3/16 orifice, 6-15 WC spring
Elster American Meter 1 NPT model 1813C gas regulator with 5/16 orifice, 6-15 WC spring
Elster American Meter 1 NPT model 1813C gas regulator with 3/8 orifice, 6-15 WC spring
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