Manual

2
Lever Acting Design
325 series
NOTE: Vent limiters are designed for use indoors and in
spaces where limiting the amount of gas escapement due to
diaphragm failure is critical. Vent limiters are not to be
used outdoors if they are exposed to the environment.
13A15 vent protector is available for outdoor use when vent
protection is required.
The 325 Series regulators are Maxitrol-tested for inlet
pressures up to 10 psi (CSA certified for 2 psi and 5 psi).
With the 12A09 or 12A39 installed, maximum inlet pressure
is 2 psi (LP) and 5 psi (natural). Inlet pressures exceeding 2
psi (LP), or 5 psi (natural) require a vent line.
The self-aligning valve is made of nitrile rubber. Housings
are durable aluminum die castings and all internal parts are
carefully selected and corrosion resistant. The diaphragms
are of high quality supported synthetic rubber compounds.
The 325 Series regulators are suitable for multi-poise
mounting. But 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.
These regulators provide no downstream over-pressure
protection in the event of failure. At supply pressures in
excess of 2 psi they should not be used unless downstream
appliance controls are rated for supply pressure or protected
by some other means. Consult Maxitrol Company for
additional assistance.
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.
• Precise regulation from pilot flows to full
regulator capacity...
• Meets many utility specifications.
325-3*, 325-5A* & 325-7
The 325 Series is a pounds to inches regulator, meeting utility
specifications. The 325 Series regulator is for use on
residential, commercial, and industrial applications where
adequate inlet pressures are available.
They are a high performance type regulator and can be used
as a single stage regulator - reducing pounds pressure to
normal burner pressure. They can also be used as a line
regulator on equipment already fitted with an appliance
regulator.
The 325-3 and 325-5A models are CSA certified and widely
accepted with 2 psig and 5 psig house piping systems. In
fact, the entire concept (using semi-rigid copper or flexible
stainless steel tubing) would not have been possible without
the development of the compact 325 series regulators.
The 325-7, designed especially for the growing segment of
electronic ignition equipment, permits the utilization of greater
capacities without sacrificing performance. All 325 Series
models are also certified through DVGW to European EN 88.
To deliver positive dead-end lock up, the 325 Series feature a
high leverage valve linkage assembly. Lockup pressure can
vary with the speed of the solenoid valve and its location. The
regulators are capable of precise regulating control from full
flow down to pilot flows.
As an optional accessory, the 325-3 and 325-5A offer
automatic vent limiting devices. The 12A09 and 12A39 vent
limiters eliminate the need to run vent piping to a safe area -
in the event of a diaphragm rupture, gas escapement is
limited to within the ANSI/CSA standards level.
* CSA design certified
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