Elster 1800C User Manual

1800C and 1800C-HC Series Service Regulators

Technical Bulletin

1800C and 1800C-HC Series Service Regulators 02 Elster American Meter

The 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.

General Information

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.

Features

• 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

Options

VentElbow

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.

ElevationCompensation

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.

Applications

Model Number Description

1813C Basic regulator with full-capacity internal relief with

1813C-HC Basic regulator with full-capacity internal relief with

1843C Basic regulator with full-capacity internal relief and

1843C-HC Basic regulator with full-capacity internal relief and

1853C w/ USSA Basic regulator with full-capacity internal relief and

1853C-HC w/ USSA Basic regulator with full-capacity internal relief and

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.

Spring Range Part Number

14" W.C. to 35" W.C. 71403P005

1 PSIG to 3 1/2 PSIG 71403P004

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.

B A

3/4" or 1" NPT vent.

overpressure shut-off and 3/4" or 1" NPT vent.

overpressure, underpressure shut-off and 3/4" or 1" NPT vent.

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.

USSA Shutoff Spring Ranges

Over Pressure Spring Ranges

Spring Range Part Number

7.5 - 24“ W.C. 70017P123

20 - 32” W.C. 70017P124

24 - 44” W.C. 70017P125

40 - 84” W.C. 70017P126

3 - 5 PSIG 70017P127

4 - 7 PSIG 70017P128

Under Pressure Spring Ranges

Spring Range Part Number

3 - 6“ W.C. 70017P133

6 - 24” W.C. 70017P134

24 - 60” W.C. 70017P135

Pressure Taps

1/8" NPT taps are available on most valve heads.

FullCapacityReliefValve

Full capacity internal relief valve standard on all models. (See Performance Graphs on page 9)

Splashguards

UVstabilized,weather-resistant,resin

device that protects the vent screen from

A OPSODiaphragmPlate  B Pressure Spring

C Cap D Plunger

E DiaphragmStem  F Shut-off Spring

G Shut-offDisc  H Adjusting Screw

OffsetValveBody

1800C and 1800C-HC Series Service Regulators 03 Elster American Meter

5 13

Material Specifications

1 Diaphragm Case - Precision die-cast

aluminum with an exclusive seven step advanced conversion coating, single-coat polyester primer and high solids polyurethane top coat.

2 Valve Body - Cast grey iron,

undercoated, single coat polyester primer and high solids polyurethane top coat. NPT threads meet ANSI/ ASME B1.20.1. BSP-TR threads meet BS EN 10226.

Available sizes: 3/4” x 3/4”, 3/4” x 1”, 3/4” x 1-1/4”, 1” x 1”, 1” x 1-1/4” and 1-1/4” x 1-1/4” NPT or BSP-TR

Offset valve body: 3/4” x 3/4”, 3/4” x 1” and 1” x 1” NPT or BSP-TR

3 Pressure Spring - Steel, zinc plated

and yellow chromate. Color coded for identification.

Outlet

Pressure

3.5" to 6" W.C. Blue 70017P043

3.5" to 7.5" W.C. Tan 70017P089

5.5" to 8.5" W.C. Yellow 70017P044

6" to 12" W.C. Brown 70017P137

6" to 15" W.C. Purple 70017P042

12" to 28" W.C. White 70017P060

24" to 48" W.C. Red 70017P082

42" W.C. to 2 PSIG Red - Red 70017P049

Color Code

Part

Number

4 Diaphragm Plate - Steel,

Electrogalvanized.

5 Diaphragm - Buna N; Nylon

fabric reinforced.

6 Seat Disc - Buna N; 60, 70 (std.)

or 80 durometer rating.

7 Orifice Valve - High strength,

corrosion resistant aluminum.

Orifice

Size

9/16" 72494P026 72751P019

1/2" 72494P025 72751P016

3/8" 72494P023 72751P014

5/16" 72494P022 72751P013

1/4" 72494P021 72751P012

3/16" 72494P020 72751P011

1/8" x 3/16" 72494P030 72751P020

1/8" 72494P019 N/A

8 Lever - Stamped aluminum.

9 Seal Plug - Polyester thermoplastic

Standard

Part

Number

Part Number

with OPSO

UV stabilized.

10 Plunger Valve/Plunger Guide -

Minlon.

11 Pressure Adjustment Screw - Minlon.

12 Relief Valve Stem - Minlon.

13 Vent Screen - Stainless Steel -

All models are designed with a removable weather and bug-proof stainless steel screen to resist freeze ups and to exclude foreign matter. The vent is threaded ¾” or 1” NPT (BSP-TR threads available). Inside installation requires a vent line of sufficient diameter to carry gas vented by the regulator to a safe outside location away from any opening(s) in the structure. Comply with applicable Federal, State and local codes.

14 Vent Valve - Stainless Steel with

Electrogalvanized steel retainer.

15 Relief Valve Spring - Steel, zinc

plated and yellow chromate. Color coded for identification. Non-adjustable, standard set point of 8" w.c. above outlet set pressure of 7" w.c. Standard set point of

1.3 PSIG above outlet set pressure of 2 PSIG.

16 Lever Pin - Carbon steel, zinc plated

and yellow chromate.

1800C and 1800C-HC Series Service Regulators 04 Elster American Meter

1800C Series Regulator Capacity Performance

3/4" Outlet Set Point 7.0" W.C. (17.4 mbar) at 50 SCFH

SCFH (m3/h) 0.60 specific gravity gas at 60°F and 14.7 PSIA (20°C and 1.01 bar). Pressure spring 70017P044. Outlet pressure variance not to exceed +2" -1" W.C. from set point, horizontal position.

1800C Series Regulator Capacity SCFH (m3/h)

Inlet

PSIG

1/8" x 3/16"

(bar)

(0.07)

(0.14)

(0.21)

(0.34)

(0.70)

(1.00)

(1.40)

(2.10)

(2.80)

(4.10)

100

(6.90)

125

(8.60)

For optimum performance, maximum inlet pressure should not exceed maximum capacity rating for any given orifice size.

Orifice

—

275

(7.8)

375

(10.6)

450

(12.7)

500

(14.2)

700

(19.8)

800

(22.7)

1100

(31.2)

1700

(48.1)

2100

(59.5)

3/16"

Orifice

175

(5.0)

300

(8.5)

375

(10.6)

500

(14.2)

750

(21.2)

950

(26.9)

1100

(31.2)

1400

(39.6)

1700

(48.1)

2300 (65.1)

2500 (70.8)

— — — — — —

1/4"

Orifice

250 (7.1)

425

(12.0)

500

(14.2)

700

(19.8)

1100

(31.2)

1400

(39.6)

1700

(48.1)

2000 (56.6)

2400 (68.0)

2500 (70.8)

5/16"

Orifice

325

(9.2)

475

(13.5)

600

(17.0)

800

(22.7)

1200

(34.0)

1500

(42.5)

1700

(48.1)

2200

(62.3)

2500

(70.8)

2500

(70.8)

— — — —

3/8"

Orifice

350

(9.9)

550

(15.6)

700

(19.8)

950

(26.9)

1400

(39.6)

1600

(45.3)

1900

(53.8)

2400 (68.0)

2500 (70.8)

— — —

1/2"

Orifice

400

(11.3)

650

(18.4)

800

(22.7)

1000

(28.3)

1500

(42.5)

1900

(53.8)

2200 (62.3)

2500 (70.8)

— —

9/16"

Orifice

400

(11.3)

650

(18.4)

800

(22.7)

1200

(34.0)

1700

(48.1)

2000 (56.6)

2300 (65.1)

—

1" Outlet Set Point 7.0" W.C. (17.4 mbar) at 50 SCFH

SCFH (m3/h) 0.60 specific gravity gas at 60°F and 14.7 PSIA (20°C and 1.01 bar). Pressure spring 70017P044. Outlet pressure variance not to exceed +2" -1" W.C. from set point, horizontal position.

1800C Series Regulator Capacity SCFH (m3/h)

Inlet

PSIG

1/8" x 3/16"

(bar)

(0.07)

(0.14)

(0.21)

(0.34)

(0.70)

(1.00)

(1.40)

(2.10)

(2.80)

(4.10)

100

(6.90)

125

(8.60)

For optimum performance, maximum inlet pressure should not exceed maximum capacity rating for any given orifice size.

Orifice

—

250 (7.1)

350

(9.9)

425

(12.0)

500

(14.2)

600

(17.0)

750

(21.2)

1000

(28.3)

1600

(45.3)

2000 (56.6)

3/16"

Orifice

175

(5.0)

250 (7.1)

300

(8.5)

450

(12.7)

700

(19.8)

900

(25.5)

1100

(31.2)

1400

(39.6)

1700

(48.1)

2400 (68.0)

2500 (70.8)

— — — — — —

1/4"

Orifice

250 (7.1)

350

(9.9)

450

(12.7)

650

(18.4)

1000

(28.3)

1400

(39.6)

1700

(48.1)

2300 (65.1)

2500 (70.8)

— — — — —

5/16"

Orifice

300

(8.5)

450

(12.7)

550

(15.6)

750

(21.2)

1400

(39.6)

1900

(53.8)

2300 (65.1)

2500

(70.8)

2500

(70.8)

— — — —

3/8"

Orifice

375

(10.6)

500

(14.2)

700

(19.8)

950

(26.9)

1600

(45.3)

2100

(59.5)

2500 (70.8)

— — —

1/2"

Orifice

475

(13.5)

600

(17.0)

850

(24.1)

1200

(34.0)

1900

(53.8)

2500 (70.8)

— —

9/16"

Orifice

500

(14.2)

650

(18.4)

950

(26.9)

1300

(36.8)

2000 (56.6)

2500 (70.8)

—

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