Watts F275600 Valve
The Watts F275600 (Series 174A-M1) is a heavy-duty ASME Section IV pressure relief valve engineered for forced-circulation hot water heating boilers and domestic supply systems. Featuring a 1-1/4 inch NPT female inlet and outlet, this bronze body relief valve is factory-set at 30 PSI with a high-capacity steam discharge rating of 1,682,000 BTU/hr. Designed specifically for professional contractors, the 174A series utilizes a non-mechanical seat-to-disc alignment to prevent sticking or freezing, ensuring reliable overpressure protection during thermal expansion or control failure. The water seal is constructed from high-temperature resistant material to isolate the stainless steel spring and internal working parts from discharge water, preventing mineral buildup and corrosion. Its raised seat design ensures that water and sediment cannot be trapped, significantly reducing the risk of seat fouling. This spring-loaded boiler valve is a critical safety component for high-output commercial and large residential hydronic systems.
Key Benefits- High BTU Capacity: Rated for systems up to 1,682,000 BTU/hr at 30 PSI, meeting ASME Section IV requirements for large-scale boilers.
- Durable Bronze Construction: Robust bronze body and stainless steel spring provide superior resistance to corrosive water conditions.
- Foul-Resistant Design: The seat is positioned above the drain to prevent sediment entrapment, ensuring a clean seal after every discharge.
- Advanced Seat Alignment: Features a non-metallic disc-to-metal seating surface that eliminates mechanical sticking after long periods of inactivity.
- Technician-Friendly Testing: Includes a standard test lever for manual verification of waterways and valve functionality.
What is the difference between an ASME rated valve and a standard T&P valve?
An ASME Section IV valve like the 174A is specifically rated for BTU steam discharge capacity, making it the requirement for boiler overpressure safety. Standard T&P valves are typically designed for domestic water heaters and prioritize temperature-based relief.
Can I install this valve in any orientation?
No. For proper operation and to ensure sediment does not settle on the seat, the valve must be installed with the spindle in the vertical position. Ensure the discharge pipe is the same size as the valve outlet and is pitched downward to a safe drain point.
When should this relief valve be replaced?
If you observe constant weeping or if the valve fails to reseat after manual testing using the test lever, the seat may be fouled or the disc damaged. In hydronic systems, frequent lifting often indicates an issue with the expansion tank rather than the valve itself.
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: $468.08
-65%$468.08
$163.83Watts F275600 Valve
The Watts F275600 (Series 174A-M1) is a heavy-duty ASME Section IV pressure relief valve engineered for forced-circulation hot water heating boilers and domestic supply systems. Featuring a 1-1/4 inch NPT female inlet and outlet, this bronze body relief valve is factory-set at 30 PSI with a high-capacity steam discharge rating of 1,682,000 BTU/hr. Designed specifically for professional contractors, the 174A series utilizes a non-mechanical seat-to-disc alignment to prevent sticking or freezing, ensuring reliable overpressure protection during thermal expansion or control failure. The water seal is constructed from high-temperature resistant material to isolate the stainless steel spring and internal working parts from discharge water, preventing mineral buildup and corrosion. Its raised seat design ensures that water and sediment cannot be trapped, significantly reducing the risk of seat fouling. This spring-loaded boiler valve is a critical safety component for high-output commercial and large residential hydronic systems.
Key Benefits- High BTU Capacity: Rated for systems up to 1,682,000 BTU/hr at 30 PSI, meeting ASME Section IV requirements for large-scale boilers.
- Durable Bronze Construction: Robust bronze body and stainless steel spring provide superior resistance to corrosive water conditions.
- Foul-Resistant Design: The seat is positioned above the drain to prevent sediment entrapment, ensuring a clean seal after every discharge.
- Advanced Seat Alignment: Features a non-metallic disc-to-metal seating surface that eliminates mechanical sticking after long periods of inactivity.
- Technician-Friendly Testing: Includes a standard test lever for manual verification of waterways and valve functionality.
What is the difference between an ASME rated valve and a standard T&P valve?
An ASME Section IV valve like the 174A is specifically rated for BTU steam discharge capacity, making it the requirement for boiler overpressure safety. Standard T&P valves are typically designed for domestic water heaters and prioritize temperature-based relief.
Can I install this valve in any orientation?
No. For proper operation and to ensure sediment does not settle on the seat, the valve must be installed with the spindle in the vertical position. Ensure the discharge pipe is the same size as the valve outlet and is pitched downward to a safe drain point.
When should this relief valve be replaced?
If you observe constant weeping or if the valve fails to reseat after manual testing using the test lever, the seat may be fouled or the disc damaged. In hydronic systems, frequent lifting often indicates an issue with the expansion tank rather than the valve itself.
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 Watts F275600 (Series 174A-M1) is a heavy-duty ASME Section IV pressure relief valve engineered for forced-circulation hot water heating boilers and domestic supply systems. Featuring a 1-1/4 inch NPT female inlet and outlet, this bronze body relief valve is factory-set at 30 PSI with a high-capacity steam discharge rating of 1,682,000 BTU/hr. Designed specifically for professional contractors, the 174A series utilizes a non-mechanical seat-to-disc alignment to prevent sticking or freezing, ensuring reliable overpressure protection during thermal expansion or control failure. The water seal is constructed from high-temperature resistant material to isolate the stainless steel spring and internal working parts from discharge water, preventing mineral buildup and corrosion. Its raised seat design ensures that water and sediment cannot be trapped, significantly reducing the risk of seat fouling. This spring-loaded boiler valve is a critical safety component for high-output commercial and large residential hydronic systems.
Key Benefits- High BTU Capacity: Rated for systems up to 1,682,000 BTU/hr at 30 PSI, meeting ASME Section IV requirements for large-scale boilers.
- Durable Bronze Construction: Robust bronze body and stainless steel spring provide superior resistance to corrosive water conditions.
- Foul-Resistant Design: The seat is positioned above the drain to prevent sediment entrapment, ensuring a clean seal after every discharge.
- Advanced Seat Alignment: Features a non-metallic disc-to-metal seating surface that eliminates mechanical sticking after long periods of inactivity.
- Technician-Friendly Testing: Includes a standard test lever for manual verification of waterways and valve functionality.
What is the difference between an ASME rated valve and a standard T&P valve?
An ASME Section IV valve like the 174A is specifically rated for BTU steam discharge capacity, making it the requirement for boiler overpressure safety. Standard T&P valves are typically designed for domestic water heaters and prioritize temperature-based relief.
Can I install this valve in any orientation?
No. For proper operation and to ensure sediment does not settle on the seat, the valve must be installed with the spindle in the vertical position. Ensure the discharge pipe is the same size as the valve outlet and is pitched downward to a safe drain point.
When should this relief valve be replaced?
If you observe constant weeping or if the valve fails to reseat after manual testing using the test lever, the seat may be fouled or the disc damaged. In hydronic systems, frequent lifting often indicates an issue with the expansion tank rather than the valve itself.
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.
