Maxitrol 325 Series Manual

325 Series Appliance Pressure Regulators
For 2 psi, 5 psi, and 10 psi piping systems.
TABLE OF CONTENTS
Description .................................................................................. 1
Pressure Drop ............................................................................ 2
Capacities ................................................................................... 3
Dimensions ................................................................................. 3
Spring Selection Chart .............................................................. 4
Sizing Instructions ...................................................................... 4
DESCRIPTION
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 lock-up. The regulators are capable of
B Models: Imblue Technology™ increases corrosion resistance
and provides extra protection against the elements for regulators
used in outdoor applications.
NOTE: (B) in model number designates Imblue Technology
NOTICE
These regulators provide no do
in the event of failure. At supply pressures in excess of 2 psi,
are rated for supply pressure or protected by some other means.
For Technical Support contact a Maxitrol Technical Support
Representative. See Maxitrol Safety Warning Instructions,
GPR_MI_EN.ES
SPECIFICATIONS
Gases
petroleum gases, and LP gas-air mixtures.
Approvals
CSA: ANSI Z21.18/CSA 6.3
Maximum Inlet Pressure
Model
325-3(B) 2 psi (13.8 kPa),
325-5A(B) 5 psi (34.5 kPa)
325-7A(B)
With 12A09, 12A39, or 12A49 Installed
Model
Maximum Inlet Pressure
325-3(B)
325-5A(B)
325-7A(B)
Model Inlet Pressure
325-3(B) 2 psi (13.8 kPa)
325-3(B)
5 psi (34.5 kPa)
325-5A(B)
© 2011 Maxitrol Company, All Rights Reserved.
Maxitrol Tested
10 psi (69 kPa)
NAT: 5 psi (34.5 kPa)
LP: 2 psi (13.8 kPa)
Spring Ranges
325-3
325-3B
Figure 1: 325 Series Appliance Regulators
Emergency Exposure Limits
All models (Inlet Side Only)................................... 65 psi (450 kPa)
™ .
Maximum Individual Load
Largest single appliance served by the regulator.
325-3(B) .................................................................100,000 Btu/hr
325-5A(B) .............................................................. 250,000 Btu/hr
325-7A(B) ........................................................... 1,250,000 Btu/hr
Capacity
Total load of multiple appliances combined.
325-3(B) (3/8", 1/2") ................................................150,000 Btu/hr
325-5A(B) (1/2", 3/4", 1") ........................................ 300,000 Btu/hr
325-7A(B) (1 1/4", 1 1/2") .................................... 1,250,000 Btu/hr
NOTE: Capacity table is used to determine the maximum multiple
appliance load.The largest single appliance served by the
regulator should not exceed the maximum individual load
Ambient Temperature Limits
All Models .................................... -40ºF to 205ºF (-40ºC to 96ºC)
Vent Pipe Connections
325-3(B) ..........................................................................1/8" NPT
325-5A(B) ....................................................................... 3/8" NPT
325-7A(B) ........................................................................1/2" NPT
Mounting Position
The 325 Series is suitable for multi-poise
limiting device, the regulator must be
mounted in a horizontal upright position
(see Figure 2). Install the regulator
Safety Warning Instructions, GPR_MI_
EN.ES)
1
325-5A
325-5AB
sting. (See Maxitrol
Figure 2: 325 Regulator
in Upright Postion
325-7A
325-7AB
UPRIGHT