Watts 0275174 Relief Valve
For high-capacity pressure protection in commercial and residential hydronic systems, the Watts 0275174 Series 174A provides a critical safety boundary for hot water heating boilers. This 1-inch NPT pressure relief valve is engineered with a rugged bronze body construction and is factory-calibrated to a 75 PSI set pressure, delivering a substantial steam discharge capacity of 2,055,000 BTU/hr. Its internal stainless steel spring and non-metallic disc-to-metal seating ensure a positive shut-off and consistent automatic reseating after a relief event. Designed for durability in demanding mechanical rooms, the Watts 174A relief valve features a seat located above the drain to prevent sediment accumulation from fouling the seal. This ASME Section IV safety valve also utilizes a non-mechanical seat-to-disc alignment to eliminate sticking or freezing in high-temperature environments. This component is essential for protecting fired hot water pressure vessels and storage tanks from overpressure conditions, though it is intended strictly for non-potable water applications.
Key Benefits- High BTU Capacity: Rated for up to 2,055,000 BTU/hr to handle large boiler loads and runaway firing conditions.
- Debris-Resistant Design: The elevated seat prevents sediment and mineral deposits from trapping water or obstructing the discharge path.
- Thermal Protection: Maintains secondary safety relief up to a maximum temperature of 250°F.
- Corrosion Resistance: Heavy-duty bronze casting and stainless steel spring hardware offer long-term reliability in corrosive water conditions.
- Standardized Fit: 1" FNPT inlet and outlet connections allow for straightforward integration into existing manifold or tank headers.
Is the Watts 0275174 suitable for potable water systems?
No, this specific model does not comply with lead-free requirements and is restricted to hot water space heating and non-potable closed-loop hydronic systems.
Can this valve be used as an operating control?
No, this is an emergency safety relief valve designed to actuate only during overpressure events and should never be used as a primary temperature or pressure regulator.
What is the orientation for installation?
The valve uses an angle pattern configuration with a female NPT threaded inlet and a female NPT threaded outlet (drain) for standard discharge piping.
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.
Watts 0275174 Relief Valve
For high-capacity pressure protection in commercial and residential hydronic systems, the Watts 0275174 Series 174A provides a critical safety boundary for hot water heating boilers. This 1-inch NPT pressure relief valve is engineered with a rugged bronze body construction and is factory-calibrated to a 75 PSI set pressure, delivering a substantial steam discharge capacity of 2,055,000 BTU/hr. Its internal stainless steel spring and non-metallic disc-to-metal seating ensure a positive shut-off and consistent automatic reseating after a relief event. Designed for durability in demanding mechanical rooms, the Watts 174A relief valve features a seat located above the drain to prevent sediment accumulation from fouling the seal. This ASME Section IV safety valve also utilizes a non-mechanical seat-to-disc alignment to eliminate sticking or freezing in high-temperature environments. This component is essential for protecting fired hot water pressure vessels and storage tanks from overpressure conditions, though it is intended strictly for non-potable water applications.
Key Benefits- High BTU Capacity: Rated for up to 2,055,000 BTU/hr to handle large boiler loads and runaway firing conditions.
- Debris-Resistant Design: The elevated seat prevents sediment and mineral deposits from trapping water or obstructing the discharge path.
- Thermal Protection: Maintains secondary safety relief up to a maximum temperature of 250°F.
- Corrosion Resistance: Heavy-duty bronze casting and stainless steel spring hardware offer long-term reliability in corrosive water conditions.
- Standardized Fit: 1" FNPT inlet and outlet connections allow for straightforward integration into existing manifold or tank headers.
Is the Watts 0275174 suitable for potable water systems?
No, this specific model does not comply with lead-free requirements and is restricted to hot water space heating and non-potable closed-loop hydronic systems.
Can this valve be used as an operating control?
No, this is an emergency safety relief valve designed to actuate only during overpressure events and should never be used as a primary temperature or pressure regulator.
What is the orientation for installation?
The valve uses an angle pattern configuration with a female NPT threaded inlet and a female NPT threaded outlet (drain) for standard discharge piping.
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
For high-capacity pressure protection in commercial and residential hydronic systems, the Watts 0275174 Series 174A provides a critical safety boundary for hot water heating boilers. This 1-inch NPT pressure relief valve is engineered with a rugged bronze body construction and is factory-calibrated to a 75 PSI set pressure, delivering a substantial steam discharge capacity of 2,055,000 BTU/hr. Its internal stainless steel spring and non-metallic disc-to-metal seating ensure a positive shut-off and consistent automatic reseating after a relief event. Designed for durability in demanding mechanical rooms, the Watts 174A relief valve features a seat located above the drain to prevent sediment accumulation from fouling the seal. This ASME Section IV safety valve also utilizes a non-mechanical seat-to-disc alignment to eliminate sticking or freezing in high-temperature environments. This component is essential for protecting fired hot water pressure vessels and storage tanks from overpressure conditions, though it is intended strictly for non-potable water applications.
Key Benefits- High BTU Capacity: Rated for up to 2,055,000 BTU/hr to handle large boiler loads and runaway firing conditions.
- Debris-Resistant Design: The elevated seat prevents sediment and mineral deposits from trapping water or obstructing the discharge path.
- Thermal Protection: Maintains secondary safety relief up to a maximum temperature of 250°F.
- Corrosion Resistance: Heavy-duty bronze casting and stainless steel spring hardware offer long-term reliability in corrosive water conditions.
- Standardized Fit: 1" FNPT inlet and outlet connections allow for straightforward integration into existing manifold or tank headers.
Is the Watts 0275174 suitable for potable water systems?
No, this specific model does not comply with lead-free requirements and is restricted to hot water space heating and non-potable closed-loop hydronic systems.
Can this valve be used as an operating control?
No, this is an emergency safety relief valve designed to actuate only during overpressure events and should never be used as a primary temperature or pressure regulator.
What is the orientation for installation?
The valve uses an angle pattern configuration with a female NPT threaded inlet and a female NPT threaded outlet (drain) for standard discharge piping.
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.
