Manual

ManualsBrandsMaxitrol ManualsHeating Supplies1/2" Lever Acting Gas Regulator w/ Vent Limiter (140,000 BTU)

LEVER ACTING DESIGN

GAS APPLIANCE PRESSURE REGULATOR

Upright

When vented to the outdoors

the 325 Series is suitable for

multi-poise mounting. When

using the vent limiting

device, the regulator (325-3,

325-5A) must be mounted in

a horizontal upright position.

Install the regulator properly

with gas flowing as indicated

by the arrow on the casting

(also see the Safety Warning

Instructions bulletin).

325-3*, 325-5A*, 325-7

Pipe sizes from 3/8” to 1-1/2”

CSA 6.3 and ANSI Z21.18

Design Certified - 325-3, 325-5A

Maximum Inlet Pressure:

ANSI Z21.18 Certified - 325-3, 325-5A .....2psi (140 mbar),

Maxitrol-tested: all models......................10 psi ( 690 mbar)

With 12A09 or 12A39:

Max. inlet pressure (LP)........................2 psi (140 mbar)

Max. inlet pressure (natural)...................5 psi (345 mbar)

Emergency Exposure Limits

All models (inlet side only).......................65 psi (4.5 bar)

Maximum Individual Load

Largest single appliance served by the regulator

325-3......................................................100,000 Btu/hr

325-5A....................................................250,000 Btu/hr

325-7......................................................900,000 Btu/hr

Capacity:

Total load of all appliances combined

325-3 (3/8”, 1/2”)......................................150,000 Btu/hr

325-5A (1/2”, 3/4”, 1”)..................................300,000 Btu/hr

325-7 (1-1/4”, 1-1/2”)..............................1,000,000 Btu/hr

Ambient Temperature Limits

All models...............................-40° to 205°F (-40° to 96°C)

DVGW...........................................32° to 140°F (0° to 60°C)

EN................................................5° to 176°F (-15° to 80°C)

Vent Pipe Connection Size:

325-3 ..............................................................1/8" NPT

325-5A.............................................................3/8" NPT

325-7................................................................1/2" NPT

Gases: Suitable for application in natural, manufactured, mixed

gases, liquefied petroleum gases, and LP gas-air mixture piping

systems.

NOTE: All Maxitrol gas appliance regulators must be installed

and operated in accordance with Maxitrol's 'Safety Warning'

bulletin.

* Design Certified - 325-3, 325-5A

5 psi (345 mbar)

Summary of content (4 pages)

PAGE 1
LEVER ACTING DESIGN GAS APPLIANCE PRESSURE REGULATOR CSA 6.3 and ANSI Z21.18 Design Certified - 325-3, 325-5A Maximum Inlet Pressure: ANSI Z21.18 Certified - 325-3, 325-5A .....2psi (140 mbar), 5 psi (345 mbar) Maxitrol-tested: all models......................10 psi ( 690 mbar) With 12A09 or 12A39: Max. inlet pressure (LP)........................2 psi (140 mbar) Max. inlet pressure (natural)...................5 psi (345 mbar) Emergency Exposure Limits All models (inlet side only).......................
PAGE 2
Lever Acting Design 325 series 325-3*, 325-5A* & 325-7 FEATURES: • • • • • Designed for multi-poise mounting... Self-aligning valve with lever action for dead end lockup... Durable, corrosion-resistant construction... High performance type for pounds to inches reduction... Available in six pipe sizes from 3/8" to 1-1/2"... BENEFITS: • Ease of installation... • Longer life, less maintenance... • May be used for both 2 psi and 5 psi corrugated stainless steel tubing (CSST) systems.
PAGE 3
Capacities and Pressure Drop CAPACITIES - based on 1" w.c. pressure drop, from set point*. 0.64 sp gr gas expressed in CFH (m3/h). Model Number 325-3* CSA Max. CFH 1/2 psi (34 mbar) 4.0” w.c. 150 160 (4.5) 7.0” w.c. 150 150 300 120 (3.4) 150 (4.2) 180 (5.1) 220 (6.2) 290 (8.2) 320 (9.1) 100 (2.8) 120 (3.4) 150 (4.2) 220 (6.2) 280 (7.9) 320 (9.1) 300 (8.5) 340 (9.6) 416 (11.8) 500 (14.2) 600 (17.0) 680 (19.3) 10.0” w.c. 4.0” w.c.
PAGE 4
Dimensions and Spring Ranges 325-3 325-5A A A C C B B DIMENSIONS - inches (millimeters) Model Number Pipe Size* Swing Radius A Call-Outs B C 325-3 3/8 x 3/8 1/2 x 1/2 3 (76) 3-1/2 (89) 4-1/4 (108) 3-7/8 (98) 325-5A 1/2 x 1/2 3/4 x 3/4 1x1 4-7/8 (124) 5-1/4 (133) 5-7/8 (149) 5-7/16 (138) 325-7 1-1/4 x 1-1/4 1-1/2 x 1-1/2 6-1/8 (156) 7-1/4 (184) 8 (203) 7 (178) 325-7 A C * standard models NPT, 'M' models available with BSP threads B SPRING SELECTION CHART - inches w.c.