
Watts 0274598 Valve
The Watts 0274598 is a high-capacity ASME Section IV certified pressure relief valve, engineered specifically for hot water heating and domestic supply boiler systems. Built with a rugged bronze body and a stainless steel spring, this 174A series valve provides critical overpressure protection by reacting to thermal expansion and runaway firing conditions. It features a 3/4-inch FNPT inlet and outlet connection, delivering a substantial steam discharge capacity of 1,320,000 BTU/hr at its fixed 75 PSI set point. The internal design includes a non-metallic disc-to-metal seating and a protective water seal of high-temperature resisting material that isolates the working parts from water during relief cycles. This prevents the spring from fouling due to corrosive water conditions. The raised seat design ensures that sediment and water are never trapped in the seating area, significantly reducing the risk of the valve sticking or freezing. Ideal for mechanical contractors and facility managers, this Spring Loaded valve ensures a reliable emergency safety relief for commercial hydronic systems.
Key Benefits
- High BTU Discharge Capacity: Rated for up to 1,320,000 BTU/hr to handle high-output boiler systems safely.
- Foul-Resistant Seat: The seat is positioned above the drain to prevent sediment accumulation and ensure consistent Automatic Reseating.
- Durable Bronze Construction: Heavy-duty bronze body and stainless steel spring offer superior resistance to corrosive heating system environments.
- Non-Mechanical Alignment: The seat-to-disc alignment is designed to avoid mechanical sticking or freezing under extreme temperatures up to 250°F.
- Standardized Threading: Features 3/4-inch NPT female connections for straightforward integration into existing hydronic piping.
Common Questions
- What is the primary application for the 174A-3/4-75# valve? It is designed exclusively for pressure protection in hot water heating and domestic supply boilers; it is not for use in potable water systems or as an operating control.
- How often should the test lever be operated? Technicians should trip the test lever at least once a year to ensure the waterways are clear and the valve is functioning correctly.
- Is this valve compatible with Lead Free requirements? No, this specific model (0274598) is for non-potable, closed-loop heating applications and does not meet the low-lead standards for drinking water.
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.
Watts 0274598 Valve
The Watts 0274598 is a high-capacity ASME Section IV certified pressure relief valve, engineered specifically for hot water heating and domestic supply boiler systems. Built with a rugged bronze body and a stainless steel spring, this 174A series valve provides critical overpressure protection by reacting to thermal expansion and runaway firing conditions. It features a 3/4-inch FNPT inlet and outlet connection, delivering a substantial steam discharge capacity of 1,320,000 BTU/hr at its fixed 75 PSI set point. The internal design includes a non-metallic disc-to-metal seating and a protective water seal of high-temperature resisting material that isolates the working parts from water during relief cycles. This prevents the spring from fouling due to corrosive water conditions. The raised seat design ensures that sediment and water are never trapped in the seating area, significantly reducing the risk of the valve sticking or freezing. Ideal for mechanical contractors and facility managers, this Spring Loaded valve ensures a reliable emergency safety relief for commercial hydronic systems.
Key Benefits
- High BTU Discharge Capacity: Rated for up to 1,320,000 BTU/hr to handle high-output boiler systems safely.
- Foul-Resistant Seat: The seat is positioned above the drain to prevent sediment accumulation and ensure consistent Automatic Reseating.
- Durable Bronze Construction: Heavy-duty bronze body and stainless steel spring offer superior resistance to corrosive heating system environments.
- Non-Mechanical Alignment: The seat-to-disc alignment is designed to avoid mechanical sticking or freezing under extreme temperatures up to 250°F.
- Standardized Threading: Features 3/4-inch NPT female connections for straightforward integration into existing hydronic piping.
Common Questions
- What is the primary application for the 174A-3/4-75# valve? It is designed exclusively for pressure protection in hot water heating and domestic supply boilers; it is not for use in potable water systems or as an operating control.
- How often should the test lever be operated? Technicians should trip the test lever at least once a year to ensure the waterways are clear and the valve is functioning correctly.
- Is this valve compatible with Lead Free requirements? No, this specific model (0274598) is for non-potable, closed-loop heating applications and does not meet the low-lead standards for drinking water.
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
Shipping & Returns
Shipping & Returns
Description
The Watts 0274598 is a high-capacity ASME Section IV certified pressure relief valve, engineered specifically for hot water heating and domestic supply boiler systems. Built with a rugged bronze body and a stainless steel spring, this 174A series valve provides critical overpressure protection by reacting to thermal expansion and runaway firing conditions. It features a 3/4-inch FNPT inlet and outlet connection, delivering a substantial steam discharge capacity of 1,320,000 BTU/hr at its fixed 75 PSI set point. The internal design includes a non-metallic disc-to-metal seating and a protective water seal of high-temperature resisting material that isolates the working parts from water during relief cycles. This prevents the spring from fouling due to corrosive water conditions. The raised seat design ensures that sediment and water are never trapped in the seating area, significantly reducing the risk of the valve sticking or freezing. Ideal for mechanical contractors and facility managers, this Spring Loaded valve ensures a reliable emergency safety relief for commercial hydronic systems.
Key Benefits
- High BTU Discharge Capacity: Rated for up to 1,320,000 BTU/hr to handle high-output boiler systems safely.
- Foul-Resistant Seat: The seat is positioned above the drain to prevent sediment accumulation and ensure consistent Automatic Reseating.
- Durable Bronze Construction: Heavy-duty bronze body and stainless steel spring offer superior resistance to corrosive heating system environments.
- Non-Mechanical Alignment: The seat-to-disc alignment is designed to avoid mechanical sticking or freezing under extreme temperatures up to 250°F.
- Standardized Threading: Features 3/4-inch NPT female connections for straightforward integration into existing hydronic piping.
Common Questions
- What is the primary application for the 174A-3/4-75# valve? It is designed exclusively for pressure protection in hot water heating and domestic supply boilers; it is not for use in potable water systems or as an operating control.
- How often should the test lever be operated? Technicians should trip the test lever at least once a year to ensure the waterways are clear and the valve is functioning correctly.
- Is this valve compatible with Lead Free requirements? No, this specific model (0274598) is for non-potable, closed-loop heating applications and does not meet the low-lead standards for drinking water.
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.












