Watts 0275950 Valve
The Watts 0275950 (Series 174A) is a heavy-duty boiler pressure relief valve designed for high-capacity protection in hot water space heating and domestic supply boiler applications. Constructed with a rugged bronze body and 1-1/4 inch NPT threaded female connections, this ASME Section IV certified valve is engineered for emergency safety relief by discharging water to prevent excessive pressure buildup within the system. It features a non-metallic disc-to-metal seating design that prevents sticking and freezing, even in systems where sediment or corrosive water conditions are present.
This technician-grade valve is factory set at 100 PSI and delivers a high-output discharge capacity of 4,399,000 BTU/hr. The 174A-1 1/4"-100# RLF model includes a stainless steel spring for consistent performance and a manual test lever for routine system diagnostics. It is critical for contractors to note that this specific configuration is rated for non-potable heating applications and is intended for safety relief, not as a primary operating control. The elevated seat design ensures that the discharge line remains clear of trapped water and debris, maintaining the integrity of the pressure seal during standard operating cycles.
Key Benefits- ASME Section IV Certified: National Board rated for high-capacity thermal expansion protection in commercial and industrial boilers.
- High BTU Discharge: Rated for up to 4,399,000 BTU/hr, providing adequate safety margins for large-scale hydronic systems.
- Corrosion Resistant: Bronze body and stainless steel internals resist scale buildup and ensure reliable operation in harsh environments.
- Anti-Stick Seating: Non-metallic disc prevents seat bonding, ensuring the pressure relief valve opens precisely at the 100 PSI setpoint.
- Maintenance Friendly: Features a standard test lever and 1-1/4" NPT threaded connections for straightforward installation and inspection.
Is this valve suitable for potable water systems?
No, the Watts 174A 0275950 is designed for hot water heating and boiler applications. For potable water systems, a lead-free relief valve meeting specific regulatory standards must be used.
What is the maximum operating temperature for this relief valve?
This Watts 174A series valve is typically rated for a maximum operating temperature of 250°F (121°C).
Can the pressure setpoint be adjusted in the field?
No, this unit is factory-calibrated and set to 100 PSI. Field adjustments should not be attempted as they void the ASME certification and compromise safety.
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: $1,043.71
-65%$1,043.71
$365.30Watts 0275950 Valve
The Watts 0275950 (Series 174A) is a heavy-duty boiler pressure relief valve designed for high-capacity protection in hot water space heating and domestic supply boiler applications. Constructed with a rugged bronze body and 1-1/4 inch NPT threaded female connections, this ASME Section IV certified valve is engineered for emergency safety relief by discharging water to prevent excessive pressure buildup within the system. It features a non-metallic disc-to-metal seating design that prevents sticking and freezing, even in systems where sediment or corrosive water conditions are present.
This technician-grade valve is factory set at 100 PSI and delivers a high-output discharge capacity of 4,399,000 BTU/hr. The 174A-1 1/4"-100# RLF model includes a stainless steel spring for consistent performance and a manual test lever for routine system diagnostics. It is critical for contractors to note that this specific configuration is rated for non-potable heating applications and is intended for safety relief, not as a primary operating control. The elevated seat design ensures that the discharge line remains clear of trapped water and debris, maintaining the integrity of the pressure seal during standard operating cycles.
Key Benefits- ASME Section IV Certified: National Board rated for high-capacity thermal expansion protection in commercial and industrial boilers.
- High BTU Discharge: Rated for up to 4,399,000 BTU/hr, providing adequate safety margins for large-scale hydronic systems.
- Corrosion Resistant: Bronze body and stainless steel internals resist scale buildup and ensure reliable operation in harsh environments.
- Anti-Stick Seating: Non-metallic disc prevents seat bonding, ensuring the pressure relief valve opens precisely at the 100 PSI setpoint.
- Maintenance Friendly: Features a standard test lever and 1-1/4" NPT threaded connections for straightforward installation and inspection.
Is this valve suitable for potable water systems?
No, the Watts 174A 0275950 is designed for hot water heating and boiler applications. For potable water systems, a lead-free relief valve meeting specific regulatory standards must be used.
What is the maximum operating temperature for this relief valve?
This Watts 174A series valve is typically rated for a maximum operating temperature of 250°F (121°C).
Can the pressure setpoint be adjusted in the field?
No, this unit is factory-calibrated and set to 100 PSI. Field adjustments should not be attempted as they void the ASME certification and compromise safety.
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 0275950 (Series 174A) is a heavy-duty boiler pressure relief valve designed for high-capacity protection in hot water space heating and domestic supply boiler applications. Constructed with a rugged bronze body and 1-1/4 inch NPT threaded female connections, this ASME Section IV certified valve is engineered for emergency safety relief by discharging water to prevent excessive pressure buildup within the system. It features a non-metallic disc-to-metal seating design that prevents sticking and freezing, even in systems where sediment or corrosive water conditions are present.
This technician-grade valve is factory set at 100 PSI and delivers a high-output discharge capacity of 4,399,000 BTU/hr. The 174A-1 1/4"-100# RLF model includes a stainless steel spring for consistent performance and a manual test lever for routine system diagnostics. It is critical for contractors to note that this specific configuration is rated for non-potable heating applications and is intended for safety relief, not as a primary operating control. The elevated seat design ensures that the discharge line remains clear of trapped water and debris, maintaining the integrity of the pressure seal during standard operating cycles.
Key Benefits- ASME Section IV Certified: National Board rated for high-capacity thermal expansion protection in commercial and industrial boilers.
- High BTU Discharge: Rated for up to 4,399,000 BTU/hr, providing adequate safety margins for large-scale hydronic systems.
- Corrosion Resistant: Bronze body and stainless steel internals resist scale buildup and ensure reliable operation in harsh environments.
- Anti-Stick Seating: Non-metallic disc prevents seat bonding, ensuring the pressure relief valve opens precisely at the 100 PSI setpoint.
- Maintenance Friendly: Features a standard test lever and 1-1/4" NPT threaded connections for straightforward installation and inspection.
Is this valve suitable for potable water systems?
No, the Watts 174A 0275950 is designed for hot water heating and boiler applications. For potable water systems, a lead-free relief valve meeting specific regulatory standards must be used.
What is the maximum operating temperature for this relief valve?
This Watts 174A series valve is typically rated for a maximum operating temperature of 250°F (121°C).
Can the pressure setpoint be adjusted in the field?
No, this unit is factory-calibrated and set to 100 PSI. Field adjustments should not be attempted as they void the ASME certification and compromise safety.
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.
