Watts 0275825 Valve
The Watts 0275825 (Series 174A) is a high-capacity ASME Section IV boiler pressure relief valve designed specifically for hot water space heating applications. Engineered for rugged performance in commercial and residential hydronic systems, this 1-1/4" NPT valve is factory-set at 75 PSI to provide reliable overpressure protection. With a high-volume discharge capacity of 3,429,000 BTU/hr, it ensures system integrity during thermal expansion or control failure. The Watts 174A-75 features a heavy-duty bronze body and a non-metallic disc-to-metal seat, which prevents the valve from sticking or freezing due to corrosive water conditions. Its technical design places the seat above the drain to prevent sediment buildup, ensuring a clean reseat every time the valve operates. This model is a standard for contractors requiring a 1-1/4 inch NPT relief valve that meets strict ASME safety standards for large-scale boiler equipment.
Key Benefits for Technicians- High BTU Rating: Offers a massive 3,429,000 BTU/hr rating, making it suitable for high-output commercial boilers.
- Advanced Seat Design: The raised seat prevents mineral deposits and sediment from fouling the seal, ensuring consistent boiler overpressure protection.
- Durable Bronze Construction: Built with a corrosion-resistant bronze body and a stainless steel spring to withstand harsh hydronic environments.
- Reliable Reseating: The non-mechanical disc alignment provides an airtight seal and prevents the valve from sticking even after long periods of inactivity.
What is the maximum temperature rating for the Watts 174A?
This valve is rated for a maximum temperature of 250°F (121°C), which is the standard for hot water heating boilers.
Can this 75 PSI relief valve be used in potable water systems?
No, the Watts 0275825 is not lead-free and is strictly intended for non-potable closed-loop heating systems. For domestic hot water, a lead-free (LF) version must be used.
Is the discharge line size critical for this 1-1/4" valve?
Yes, per code and manufacturer specifications, the discharge piping must match the 1-1/4" outlet size and be pitched downward to a safe drain point to prevent water from being trapped against the seat.
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: $748.69
-65%$748.69
$262.04Watts 0275825 Valve
The Watts 0275825 (Series 174A) is a high-capacity ASME Section IV boiler pressure relief valve designed specifically for hot water space heating applications. Engineered for rugged performance in commercial and residential hydronic systems, this 1-1/4" NPT valve is factory-set at 75 PSI to provide reliable overpressure protection. With a high-volume discharge capacity of 3,429,000 BTU/hr, it ensures system integrity during thermal expansion or control failure. The Watts 174A-75 features a heavy-duty bronze body and a non-metallic disc-to-metal seat, which prevents the valve from sticking or freezing due to corrosive water conditions. Its technical design places the seat above the drain to prevent sediment buildup, ensuring a clean reseat every time the valve operates. This model is a standard for contractors requiring a 1-1/4 inch NPT relief valve that meets strict ASME safety standards for large-scale boiler equipment.
Key Benefits for Technicians- High BTU Rating: Offers a massive 3,429,000 BTU/hr rating, making it suitable for high-output commercial boilers.
- Advanced Seat Design: The raised seat prevents mineral deposits and sediment from fouling the seal, ensuring consistent boiler overpressure protection.
- Durable Bronze Construction: Built with a corrosion-resistant bronze body and a stainless steel spring to withstand harsh hydronic environments.
- Reliable Reseating: The non-mechanical disc alignment provides an airtight seal and prevents the valve from sticking even after long periods of inactivity.
What is the maximum temperature rating for the Watts 174A?
This valve is rated for a maximum temperature of 250°F (121°C), which is the standard for hot water heating boilers.
Can this 75 PSI relief valve be used in potable water systems?
No, the Watts 0275825 is not lead-free and is strictly intended for non-potable closed-loop heating systems. For domestic hot water, a lead-free (LF) version must be used.
Is the discharge line size critical for this 1-1/4" valve?
Yes, per code and manufacturer specifications, the discharge piping must match the 1-1/4" outlet size and be pitched downward to a safe drain point to prevent water from being trapped against the seat.
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 0275825 (Series 174A) is a high-capacity ASME Section IV boiler pressure relief valve designed specifically for hot water space heating applications. Engineered for rugged performance in commercial and residential hydronic systems, this 1-1/4" NPT valve is factory-set at 75 PSI to provide reliable overpressure protection. With a high-volume discharge capacity of 3,429,000 BTU/hr, it ensures system integrity during thermal expansion or control failure. The Watts 174A-75 features a heavy-duty bronze body and a non-metallic disc-to-metal seat, which prevents the valve from sticking or freezing due to corrosive water conditions. Its technical design places the seat above the drain to prevent sediment buildup, ensuring a clean reseat every time the valve operates. This model is a standard for contractors requiring a 1-1/4 inch NPT relief valve that meets strict ASME safety standards for large-scale boiler equipment.
Key Benefits for Technicians- High BTU Rating: Offers a massive 3,429,000 BTU/hr rating, making it suitable for high-output commercial boilers.
- Advanced Seat Design: The raised seat prevents mineral deposits and sediment from fouling the seal, ensuring consistent boiler overpressure protection.
- Durable Bronze Construction: Built with a corrosion-resistant bronze body and a stainless steel spring to withstand harsh hydronic environments.
- Reliable Reseating: The non-mechanical disc alignment provides an airtight seal and prevents the valve from sticking even after long periods of inactivity.
What is the maximum temperature rating for the Watts 174A?
This valve is rated for a maximum temperature of 250°F (121°C), which is the standard for hot water heating boilers.
Can this 75 PSI relief valve be used in potable water systems?
No, the Watts 0275825 is not lead-free and is strictly intended for non-potable closed-loop heating systems. For domestic hot water, a lead-free (LF) version must be used.
Is the discharge line size critical for this 1-1/4" valve?
Yes, per code and manufacturer specifications, the discharge piping must match the 1-1/4" outlet size and be pitched downward to a safe drain point to prevent water from being trapped against the seat.
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.
