
Watts F275824 Valve
The Watts 174A-1 1/4-50 (F275824) is a high-capacity ASME Section IV hot water safety relief valve designed specifically for large-scale boiler applications and commercial hydronic heating systems. With a standard 1-1/4 inch NPT inlet and outlet, this bronze-bodied valve provides a massive relief capacity of 2,459,000 BTU/hr at a set pressure of 50 PSI. It features a non-metallic heat-resistant disc-to-metal seating surface for reliable shutoff and an oversized orifice to manage high-volume thermal expansion discharge. This HVAC pressure relief valve is essential for protecting hydronic boilers from over-pressurization, ensuring the system operates within safe mechanical limits. The rugged water-sealed design prevents moisture from entering the spring cage, maintaining consistent calibration even in demanding mechanical rooms. When sizing for a replacement or new installation, verify that the total BTU output of the boiler does not exceed the relief rating of the Watts 174A series valve to ensure code compliance and system integrity.
- Maximum Discharge Capacity: Certified at 2,459,000 BTU/hr to handle high-output commercial boilers.
- Durable Construction: Features a heavy-duty bronze body and stainless steel spring for corrosion resistance in hydronic environments.
- Standardized Connections: 1-1/4" NPT threaded connections allow for straightforward integration into existing pipe manifolds.
- ASME Certified: Meets National Board and ASME Section IV requirements for pressurized heating vessels.
Common Questions
What is the relief capacity of the Watts 174A 1-1/4 inch valve at 50 PSI?
This specific model is rated for 2,459,000 BTU/hr, making it suitable for large commercial heating systems.
Can this safety relief valve be used for potable water systems?
No, the Series 174A is specifically engineered for hot water heating boilers and is not intended for use in potable water delivery systems.
How do I verify if this valve is compatible with my boiler?
Ensure the BTU rating of your boiler is equal to or less than the 2,459,000 BTU/hr rating of this valve and that your system operating pressure is below the 50 PSI set point.
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: $549.36
-65%$549.36
$192.28Watts F275824 Valve
The Watts 174A-1 1/4-50 (F275824) is a high-capacity ASME Section IV hot water safety relief valve designed specifically for large-scale boiler applications and commercial hydronic heating systems. With a standard 1-1/4 inch NPT inlet and outlet, this bronze-bodied valve provides a massive relief capacity of 2,459,000 BTU/hr at a set pressure of 50 PSI. It features a non-metallic heat-resistant disc-to-metal seating surface for reliable shutoff and an oversized orifice to manage high-volume thermal expansion discharge. This HVAC pressure relief valve is essential for protecting hydronic boilers from over-pressurization, ensuring the system operates within safe mechanical limits. The rugged water-sealed design prevents moisture from entering the spring cage, maintaining consistent calibration even in demanding mechanical rooms. When sizing for a replacement or new installation, verify that the total BTU output of the boiler does not exceed the relief rating of the Watts 174A series valve to ensure code compliance and system integrity.
- Maximum Discharge Capacity: Certified at 2,459,000 BTU/hr to handle high-output commercial boilers.
- Durable Construction: Features a heavy-duty bronze body and stainless steel spring for corrosion resistance in hydronic environments.
- Standardized Connections: 1-1/4" NPT threaded connections allow for straightforward integration into existing pipe manifolds.
- ASME Certified: Meets National Board and ASME Section IV requirements for pressurized heating vessels.
Common Questions
What is the relief capacity of the Watts 174A 1-1/4 inch valve at 50 PSI?
This specific model is rated for 2,459,000 BTU/hr, making it suitable for large commercial heating systems.
Can this safety relief valve be used for potable water systems?
No, the Series 174A is specifically engineered for hot water heating boilers and is not intended for use in potable water delivery systems.
How do I verify if this valve is compatible with my boiler?
Ensure the BTU rating of your boiler is equal to or less than the 2,459,000 BTU/hr rating of this valve and that your system operating pressure is below the 50 PSI set point.
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.
Product Information
Product Information
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Description
The Watts 174A-1 1/4-50 (F275824) is a high-capacity ASME Section IV hot water safety relief valve designed specifically for large-scale boiler applications and commercial hydronic heating systems. With a standard 1-1/4 inch NPT inlet and outlet, this bronze-bodied valve provides a massive relief capacity of 2,459,000 BTU/hr at a set pressure of 50 PSI. It features a non-metallic heat-resistant disc-to-metal seating surface for reliable shutoff and an oversized orifice to manage high-volume thermal expansion discharge. This HVAC pressure relief valve is essential for protecting hydronic boilers from over-pressurization, ensuring the system operates within safe mechanical limits. The rugged water-sealed design prevents moisture from entering the spring cage, maintaining consistent calibration even in demanding mechanical rooms. When sizing for a replacement or new installation, verify that the total BTU output of the boiler does not exceed the relief rating of the Watts 174A series valve to ensure code compliance and system integrity.
- Maximum Discharge Capacity: Certified at 2,459,000 BTU/hr to handle high-output commercial boilers.
- Durable Construction: Features a heavy-duty bronze body and stainless steel spring for corrosion resistance in hydronic environments.
- Standardized Connections: 1-1/4" NPT threaded connections allow for straightforward integration into existing pipe manifolds.
- ASME Certified: Meets National Board and ASME Section IV requirements for pressurized heating vessels.
Common Questions
What is the relief capacity of the Watts 174A 1-1/4 inch valve at 50 PSI?
This specific model is rated for 2,459,000 BTU/hr, making it suitable for large commercial heating systems.
Can this safety relief valve be used for potable water systems?
No, the Series 174A is specifically engineered for hot water heating boilers and is not intended for use in potable water delivery systems.
How do I verify if this valve is compatible with my boiler?
Ensure the BTU rating of your boiler is equal to or less than the 2,459,000 BTU/hr rating of this valve and that your system operating pressure is below the 50 PSI set point.
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.












