
Maxitrol 325-9-1 1/2-12A49 Regulator
The Maxitrol 325-9-1 1/2-12A49 is an industrial-grade, lever-acting gas pressure regulator engineered for high-demand residential and commercial applications. This model is specifically designed for 2 psi and 5 psi piping systems, providing a transition from pounds to inches of water column with reliable positive dead-end lock-up capability. Featuring 1 1/2" NPT threaded connections and a durable aluminum housing, it handles a max capacity of 2,250,000 BTU/hr, making it ideal for large-scale boiler systems, industrial furnaces, and multi-unit appliance manifolds. The internal lever-acting design ensures precise control from full flow down to pilot flow, preventing pressure spikes during demand shifts.
This Maxitrol gas regulator is factory-equipped with a 12A49 vent limiter, which permits multi-positional mounting while ensuring safe operation. The unit supports natural gas with a 5 PSI max inlet and LP gas with a 2 PSI max inlet, utilizing a 4-12" w.c. adjustable outlet spring for flexible field calibration. Its diaphragm-operated mechanism provides rapid response times and long-term stability in diverse HVACR environments. For optimal performance, ensure all upstream debris is cleared before installation to maintain the integrity of the valve seat and lock-up function.
Key Benefits- Lever Acting Design: Provides superior dead-end lock-up and precise pressure regulation across varying flow rates.
- High BTU Capacity: Rated for up to 2,250,000 BTU/hr, suitable for high-output industrial gas distribution.
- Integrated Vent Limiter: The 12A49 limiter eliminates the need for vent piping to the outdoors in many legal jurisdictions.
- Versatile Fuel Compatibility: Fully certified for use with natural gas, LP, and mixed gas systems.
- Rugged Construction: Built with high-strength aluminum and corrosion-resistant internals for reliability in mechanical rooms.
Can the 325-9 be mounted in any orientation?
While the 325-9 is generally suitable for multi-positional mounting, when a ball check vent limiting device is installed, the regulator should be mounted in a horizontal upright position to ensure the limiter functions correctly.
Is this regulator suitable for main burner and pilot flow?
Yes, the lever-acting linkage allows for precise control from extremely low pilot flows up to the maximum rated capacity of 2,250,000 BTU/hr.
What is the purpose of the positive dead-end lock-up?
Dead-end lock-up ensures that when all downstream appliances are off, the regulator completely shuts off flow, preventing the downstream manifold pressure from rising to the inlet supply pressure.
This item is not eligible for free shipping.
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: $434.07
-65%$434.07
$151.92Maxitrol 325-9-1 1/2-12A49 Regulator
The Maxitrol 325-9-1 1/2-12A49 is an industrial-grade, lever-acting gas pressure regulator engineered for high-demand residential and commercial applications. This model is specifically designed for 2 psi and 5 psi piping systems, providing a transition from pounds to inches of water column with reliable positive dead-end lock-up capability. Featuring 1 1/2" NPT threaded connections and a durable aluminum housing, it handles a max capacity of 2,250,000 BTU/hr, making it ideal for large-scale boiler systems, industrial furnaces, and multi-unit appliance manifolds. The internal lever-acting design ensures precise control from full flow down to pilot flow, preventing pressure spikes during demand shifts.
This Maxitrol gas regulator is factory-equipped with a 12A49 vent limiter, which permits multi-positional mounting while ensuring safe operation. The unit supports natural gas with a 5 PSI max inlet and LP gas with a 2 PSI max inlet, utilizing a 4-12" w.c. adjustable outlet spring for flexible field calibration. Its diaphragm-operated mechanism provides rapid response times and long-term stability in diverse HVACR environments. For optimal performance, ensure all upstream debris is cleared before installation to maintain the integrity of the valve seat and lock-up function.
Key Benefits- Lever Acting Design: Provides superior dead-end lock-up and precise pressure regulation across varying flow rates.
- High BTU Capacity: Rated for up to 2,250,000 BTU/hr, suitable for high-output industrial gas distribution.
- Integrated Vent Limiter: The 12A49 limiter eliminates the need for vent piping to the outdoors in many legal jurisdictions.
- Versatile Fuel Compatibility: Fully certified for use with natural gas, LP, and mixed gas systems.
- Rugged Construction: Built with high-strength aluminum and corrosion-resistant internals for reliability in mechanical rooms.
Can the 325-9 be mounted in any orientation?
While the 325-9 is generally suitable for multi-positional mounting, when a ball check vent limiting device is installed, the regulator should be mounted in a horizontal upright position to ensure the limiter functions correctly.
Is this regulator suitable for main burner and pilot flow?
Yes, the lever-acting linkage allows for precise control from extremely low pilot flows up to the maximum rated capacity of 2,250,000 BTU/hr.
What is the purpose of the positive dead-end lock-up?
Dead-end lock-up ensures that when all downstream appliances are off, the regulator completely shuts off flow, preventing the downstream manifold pressure from rising to the inlet supply pressure.
This item is not eligible for free shipping.
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
The Maxitrol 325-9-1 1/2-12A49 is an industrial-grade, lever-acting gas pressure regulator engineered for high-demand residential and commercial applications. This model is specifically designed for 2 psi and 5 psi piping systems, providing a transition from pounds to inches of water column with reliable positive dead-end lock-up capability. Featuring 1 1/2" NPT threaded connections and a durable aluminum housing, it handles a max capacity of 2,250,000 BTU/hr, making it ideal for large-scale boiler systems, industrial furnaces, and multi-unit appliance manifolds. The internal lever-acting design ensures precise control from full flow down to pilot flow, preventing pressure spikes during demand shifts.
This Maxitrol gas regulator is factory-equipped with a 12A49 vent limiter, which permits multi-positional mounting while ensuring safe operation. The unit supports natural gas with a 5 PSI max inlet and LP gas with a 2 PSI max inlet, utilizing a 4-12" w.c. adjustable outlet spring for flexible field calibration. Its diaphragm-operated mechanism provides rapid response times and long-term stability in diverse HVACR environments. For optimal performance, ensure all upstream debris is cleared before installation to maintain the integrity of the valve seat and lock-up function.
Key Benefits- Lever Acting Design: Provides superior dead-end lock-up and precise pressure regulation across varying flow rates.
- High BTU Capacity: Rated for up to 2,250,000 BTU/hr, suitable for high-output industrial gas distribution.
- Integrated Vent Limiter: The 12A49 limiter eliminates the need for vent piping to the outdoors in many legal jurisdictions.
- Versatile Fuel Compatibility: Fully certified for use with natural gas, LP, and mixed gas systems.
- Rugged Construction: Built with high-strength aluminum and corrosion-resistant internals for reliability in mechanical rooms.
Can the 325-9 be mounted in any orientation?
While the 325-9 is generally suitable for multi-positional mounting, when a ball check vent limiting device is installed, the regulator should be mounted in a horizontal upright position to ensure the limiter functions correctly.
Is this regulator suitable for main burner and pilot flow?
Yes, the lever-acting linkage allows for precise control from extremely low pilot flows up to the maximum rated capacity of 2,250,000 BTU/hr.
What is the purpose of the positive dead-end lock-up?
Dead-end lock-up ensures that when all downstream appliances are off, the regulator completely shuts off flow, preventing the downstream manifold pressure from rising to the inlet supply pressure.
This item is not eligible for free shipping.
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.












