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ManualsBrandsMaxitrol ManualsHeating Supplies1" Gas Pressure Regulator, w/ OPD 600, Imblue

Pipe Sizes ..................................... 3/8” to 2” threaded connections with NPT or ISO7-1 threads.

Housing Material ......................... 325-3, 325-5, 325-7A, 325-9, 325-11: aluminum.

Mounting ..................................... Suitable for multi-positional mounting. If a

is installed,

mount in an upright position only.

NOTE: All Maxitrol gas pressure regulators should be installed and operated in accordance

with Maxitrol Safety Warning Instructions (see GPR_MI_EN.ES or GPR_CSA_MI_EN.FR).

Certications ............................... 325-3, 325-5: ANSI Z21.18/CSA 6.3 Gas Appliance Pressure Regulators.

Gas Types ..................................... Suitable for natural, manufactured, mixed gases, liqueed petroleum gases, and LP

gas-air mixtures.

Rated Inlet Pressure ..................... CSA Certied: 325-3, 325-5: 2 psi (13.8 kPa), 5 psi (34.5 kPa)

Maxitrol Tested ............................ 325-3, 325-5, 325-7A, 325-9, 325-11: 10 psi (69 kPa)

With Vent Limiter 12A09, 12A39, or 12A49 Installed:

325-3, 325-5, 325-7A, 325-9: 5 psi (34.5 kPa) - Natural, 2 psi (13.8 kPa) - LP

Emergency Exposure Limits .......... 65 psi (450 kPa) (inlet side only)

Maximum Individual Load ........... Largest single appliance served by the regulator: 325-3: 100,000 Btu/h;

325-5: 325,000 Btu/h; 325-7A: 1,250,000 Btu/h, 325-9: 2,250,000 Btu/h;

325-11: 4,500,000 Btu/h

Capacity ......................................Total load of multiple appliances combined: 325-3: 150,000 Btu/h;

325-5: 325,000 Btu/h; 325-7A: 1,250,000 Btu/h; 325-9: 2,250,000 Btu/h;

325-11: 4,500,000 Btu/h

NOTE: Capacities are used to determine the maximum multiple appliance load. The

largest single appliance served by the regulator should not exceed the maximum

individual load specied above.

Ambient Temperature Ranges .......-40 to 205°F (-40 to 96°C)

Minimum Regulation .................... Suitable for pilot ow applications. (Circle P) (0.15 CFH NG), None (1.5 CFH NG).

Maxitrol’s 325 series pounds to inches regulators are for use on

residential, commercial, and industrial applications.

The 325 series features a high leverage valve linkage assembly

to deliver positive dead-end lockup. The regulators are capable

of precise control from full ow down to pilot ow.

325 SERIES

Lever Acting Design

325-3

Specications

Summary of content (4 pages)

PAGE 1
325 SERIES Lever Acting Design Maxitrol’s 325 series pounds to inches regulators are for use on residential, commercial, and industrial applications. The 325 series features a high leverage valve linkage assembly to deliver positive dead-end lockup. The regulators are capable of precise control from full flow down to pilot flow. 325-3 Specifications Pipe Sizes...................................... 3/8” to 2” threaded connections with NPT or ISO7-1 threads. Housing Material..........................
PAGE 2
APPLIANCE REGULATORS ® C Capacities: based on 1” w.c. pressure drop, from set point** US Capacities expressed in CFH (m3/h) @ 0.64 sp gr gas Model Pipe Size 325-3 3/8” x 3/8” 1/2” x 1/2” 325-5 1/2” x 1/2” 3/4” x 3/4” 1” x 1” 1 1/4” x 1 1/4” 325-7A 1 1/2” x 1 1/2” 325-9 1 1/2” x 1 1/2” 2” x 2” 2” x 2” 325-11 2 1/2” x 2 1/2” 3” x 3” Operating Inlet Pressure Outlet Pressure Set Point CSA MAX CFH 0.5 psi (3.4 kPa) 0.75 psi (5.2 kPa) 1 psi (6.9 kPa) 2 psi (13.8 kPa) 5 psi (34.
PAGE 3
25 SERIES Lever Acting Design Pressure Drop: 0.64 sp gr gas expressed in CFH (m3/h) (for system pressure drop calculations) Model 7.0” w.c. (1.7 kPa) 0.5 psi (3.4 kPa) 0.75 psi (5.2 kPa) 1 psi (6.9 kPa) 2 psi (13.8 kPa) 325-3 145 (4.0) 204 (5.8) 250 (7.0) 289 (8.2) — 325-5 400 (11.3) 550 (15.6) 670 (19.0) 770 (21.8) — 815 (23.1) 1149 (32.5) 1405 (39.8) 1624 (46.0) 2305 (65.3) 325-9 325-7A 1360 (38.5) 2113 (59.8) 2557 (72.4) 2949 (83.5) 4059 (114.8) 325-11 3000 (85.
PAGE 4
APPLIANCE REGULATORS A A 325-7A 325-9 A 325-11 Lever Acting Design 1 Seal Cap 2 Stack 3 Top Housing 4 Rubber Valve 5 Valve Seat 6 Seal Cap Gasket 7 Adjusting Screw 8 Spring 4 9 Vent Connection 5 10 Diaphragm 11 Diaphragm Plates 12 Bottom Housing 1 2 6 7 8 9 3 10 11 12 NOTE: Diagrams are graphical representations only and may differ from actual product. © 2019, Maxitrol Company. All Rights Reserved.