Maxitrol 325-3L-V 1/2 in. 325 Series Gas Regulator – 2 PSI, 250,000 BTU/hr
Brand: Maxitrol | SKU: 325-3L-V
Product Overview
The Maxitrol 325-3L-V is a 325 Series pounds-to-inches gas pressure regulator for residential, commercial and industrial gas systems. It is designed to reduce inlet pressure up to 2 PSI to the regulator’s certified 7–11 in. w.c. outlet range while maintaining control from full-flow demand down to pilot-flow conditions.
This 1/2 in. configuration is rated in the Big Frog Supply catalog for up to 250,000 BTU/hr total system capacity, with a maximum individual appliance load of 140,000 BTU/hr for this regulator family. Maxitrol’s high-leverage valve linkage is designed for positive dead-end lockup. Because regulator sizing depends on gas type, inlet/outlet pressure, piping and connected load—not connection size alone—the installation should be selected and performed by a qualified gas professional.
Key Features
- 325 Series pounds-to-inches pressure regulation
- 1/2 in. connection configuration
- Maximum inlet pressure: 2 PSI
- Certified outlet pressure range: 7–11 in. w.c.
- Catalog capacity: 250,000 BTU/hr
- Positive dead-end lockup design
Common Uses
Compatible residential, commercial and industrial natural gas, manufactured gas, mixed gas, LP gas and LP gas-air systems requiring pounds-to-inches pressure regulation.
Technical Specifications
- Series: 325
- Connection size: 1/2 in.
- Maximum inlet pressure: 2 PSI
- Minimum certified inlet pressure: 1 PSI
- Outlet pressure range: 7–11 in. w.c.
- Total catalog capacity: 250,000 BTU/hr
- Maximum individual load: 140,000 BTU/hr
- Vent connection: 1/8 in. NPT
- Ambient temperature: -40°F to 205°F
Compatibility & Installation Notes
Do not use where supply pressure exceeds 2 PSI. Install with gas flow matching the arrow on the regulator casting. The 325 Series permits multi-position mounting under applicable instructions; when a certified vent-limiting device is used, Maxitrol requires horizontal upright regulator mounting. These regulators do not provide downstream over-pressure protection in the event of regulator failure. Gas regulator sizing and installation should follow Maxitrol instructions, applicable codes and qualified-professional requirements.
Frequently Asked Questions
Does this regulator reduce 2 PSI gas pressure to appliance pressure?
It is a pounds-to-inches regulator with a maximum 2 PSI inlet and a certified 7–11 in. w.c. outlet range. The required setting and suitability must be confirmed for the connected gas system and appliances.
Can I size the regulator only by pipe connection?
No. Gas type, pressure conditions, total connected load, largest individual appliance and piping must all be considered.
Does it provide downstream over-pressure protection?
No. Maxitrol specifically states that the 325 Series does not provide downstream over-pressure protection if the regulator fails.
Why Buy From Big Frog Supply?
Choose Maxitrol 325-3L-V from Big Frog Supply when your professionally designed gas system calls for this specific 1/2 in. 325 Series pounds-to-inches regulator and verified load range.
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