
Maxitrol 325-3-1/2-RED Regulator
For contractors managing residential and light commercial gas piping, the Maxitrol 325-3-1/2-RED Gas Regulator is a job-site standard for pounds-to-inches pressure reduction. This 1/2" NPT lever-acting gas regulator is specifically calibrated with a red spring to provide an adjustable outlet pressure range of 10" to 22" w.c., making it indispensable for specific high-pressure appliance requirements or long-run lateral lines where standard 7" w.c. settings aren't sufficient. Built with an aluminum body, it handles a maximum inlet pressure of 10 PSI while the positive dead-end lock-up design ensures a tight shut-off, preventing downstream pressure creep during off-cycles. Whether you are piping a multi-appliance manifold with a 150,000 BTU/hr max capacity or a single high-efficiency boiler with a 100,000 BTU/hr individual load, this regulator maintains high-leverage valve linkage for precise control from full flow down to pilot flow.
Key Benefits for the Technician:
- Precise Pressure Regulation: The 10-22" w.c. outlet range allows for fine-tuning gas delivery to meet strict manufacturer specifications for advanced heating equipment.
- Enhanced Safety: Features positive dead-end lock-up to ensure stable downstream pressure and reliable equipment protection.
- Multi-Positional Mounting: The 325 series design allows for versatile installation, though upright mounting is required if using a 12A09 vent limiter.
- Reliable Performance: Capable of handling natural gas, LP, and mixed gases with high-leverage linkage that prevents sticking and fluctuating flows.
Common Questions:
Does this regulator require a vent line?
The Maxitrol 325-3-1/2-RED can be used with a 12A09 vent limiting device for indoor installations where local codes permit, eliminating the need to run a dedicated vent line to the outdoors. If installed outdoors, a 13A15 vent protector should be used to prevent blockage from debris or insects.
Can I use this for a 2 PSI gas system?
Yes, this is a pounds-to-inches regulator designed to step down pressures as high as 10 PSI (tested) or 2–5 PSI (certified) to standard appliance-level inches of water column.
What is the difference between the 'RED' spring and the standard spring?
The 'RED' designation indicates the pre-installed red spring (R325C10-1022), which shifts the outlet range to 10-22" w.c. compared to the standard 4-12" w.c. spring found in basic 325-3 models.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $44.67
-65%$44.67
$15.63Maxitrol 325-3-1/2-RED Regulator
For contractors managing residential and light commercial gas piping, the Maxitrol 325-3-1/2-RED Gas Regulator is a job-site standard for pounds-to-inches pressure reduction. This 1/2" NPT lever-acting gas regulator is specifically calibrated with a red spring to provide an adjustable outlet pressure range of 10" to 22" w.c., making it indispensable for specific high-pressure appliance requirements or long-run lateral lines where standard 7" w.c. settings aren't sufficient. Built with an aluminum body, it handles a maximum inlet pressure of 10 PSI while the positive dead-end lock-up design ensures a tight shut-off, preventing downstream pressure creep during off-cycles. Whether you are piping a multi-appliance manifold with a 150,000 BTU/hr max capacity or a single high-efficiency boiler with a 100,000 BTU/hr individual load, this regulator maintains high-leverage valve linkage for precise control from full flow down to pilot flow.
Key Benefits for the Technician:
- Precise Pressure Regulation: The 10-22" w.c. outlet range allows for fine-tuning gas delivery to meet strict manufacturer specifications for advanced heating equipment.
- Enhanced Safety: Features positive dead-end lock-up to ensure stable downstream pressure and reliable equipment protection.
- Multi-Positional Mounting: The 325 series design allows for versatile installation, though upright mounting is required if using a 12A09 vent limiter.
- Reliable Performance: Capable of handling natural gas, LP, and mixed gases with high-leverage linkage that prevents sticking and fluctuating flows.
Common Questions:
Does this regulator require a vent line?
The Maxitrol 325-3-1/2-RED can be used with a 12A09 vent limiting device for indoor installations where local codes permit, eliminating the need to run a dedicated vent line to the outdoors. If installed outdoors, a 13A15 vent protector should be used to prevent blockage from debris or insects.
Can I use this for a 2 PSI gas system?
Yes, this is a pounds-to-inches regulator designed to step down pressures as high as 10 PSI (tested) or 2–5 PSI (certified) to standard appliance-level inches of water column.
What is the difference between the 'RED' spring and the standard spring?
The 'RED' designation indicates the pre-installed red spring (R325C10-1022), which shifts the outlet range to 10-22" w.c. compared to the standard 4-12" w.c. spring found in basic 325-3 models.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
For contractors managing residential and light commercial gas piping, the Maxitrol 325-3-1/2-RED Gas Regulator is a job-site standard for pounds-to-inches pressure reduction. This 1/2" NPT lever-acting gas regulator is specifically calibrated with a red spring to provide an adjustable outlet pressure range of 10" to 22" w.c., making it indispensable for specific high-pressure appliance requirements or long-run lateral lines where standard 7" w.c. settings aren't sufficient. Built with an aluminum body, it handles a maximum inlet pressure of 10 PSI while the positive dead-end lock-up design ensures a tight shut-off, preventing downstream pressure creep during off-cycles. Whether you are piping a multi-appliance manifold with a 150,000 BTU/hr max capacity or a single high-efficiency boiler with a 100,000 BTU/hr individual load, this regulator maintains high-leverage valve linkage for precise control from full flow down to pilot flow.
Key Benefits for the Technician:
- Precise Pressure Regulation: The 10-22" w.c. outlet range allows for fine-tuning gas delivery to meet strict manufacturer specifications for advanced heating equipment.
- Enhanced Safety: Features positive dead-end lock-up to ensure stable downstream pressure and reliable equipment protection.
- Multi-Positional Mounting: The 325 series design allows for versatile installation, though upright mounting is required if using a 12A09 vent limiter.
- Reliable Performance: Capable of handling natural gas, LP, and mixed gases with high-leverage linkage that prevents sticking and fluctuating flows.
Common Questions:
Does this regulator require a vent line?
The Maxitrol 325-3-1/2-RED can be used with a 12A09 vent limiting device for indoor installations where local codes permit, eliminating the need to run a dedicated vent line to the outdoors. If installed outdoors, a 13A15 vent protector should be used to prevent blockage from debris or insects.
Can I use this for a 2 PSI gas system?
Yes, this is a pounds-to-inches regulator designed to step down pressures as high as 10 PSI (tested) or 2–5 PSI (certified) to standard appliance-level inches of water column.
What is the difference between the 'RED' spring and the standard spring?
The 'RED' designation indicates the pre-installed red spring (R325C10-1022), which shifts the outlet range to 10-22" w.c. compared to the standard 4-12" w.c. spring found in basic 325-3 models.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.











