
Watts 0274596 Valve
The Watts 0274596 is a 3/4 inch Model 174A-70 ASME rated pressure relief valve designed specifically for protection against excessive pressure in water heating and storage applications. Engineered for closed-loop systems, this hot water boiler relief valve features a high-capacity BTU/hr rating to ensure rapid pressure discharge when system limits are exceeded. The valve is factory set at 70 PSI, providing a reliable safety threshold for high-pressure boilers. Utilizing a bronze body construction and an EPDM disc, this component offers excellent corrosion resistance and thermal stability under demanding operational conditions.
For service technicians, the Watts 174A series is the industry standard for ASME Section IV pressure relief requirements. The large orifice design facilitates high discharge rates, while the stainless steel spring maintains consistent set-point accuracy over extended service intervals. When replacing a 3/4 174A-070, verify that the system’s BTU output does not exceed the valve's certified discharge capacity. This valve is suitable for both commercial and residential hydronic heating systems where a non-adjustable, fixed-pressure safety device is required for code compliance.
Key Benefits for Technicians- ASME Section IV Certified: Ensures compliance with rigorous safety standards for pressure vessel protection.
- High-Capacity Discharge: Specifically engineered to handle high BTU/hr outputs common in modern boiler systems.
- Durable Bronze Construction: Resists mineral buildup and scale, maintaining operational integrity in hard water environments.
- Simplified Installation: Standard 3/4" NPT threaded inlet and outlet ports allow for direct replacement of existing safety valves.
- EPDM Seat Disc: Provides a tight seal and high heat resistance for reliable seating after pressure events.
What is the relief setting for the Watts 0274596?
This specific model is a fixed-pressure relief valve factory-set to 70 PSI (4.8 bar) and cannot be adjusted in the field.
Can this valve be used for steam applications?
No, the Watts 174A series is designed exclusively for water heating and storage systems; it is not rated for steam services.
Is this valve compatible with potable water systems?
While constructed of bronze, you must verify local plumbing codes regarding lead-free requirements for potable water applications versus closed-loop hydronic heating.
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: $412.66
-65%$412.66
$144.43Watts 0274596 Valve
The Watts 0274596 is a 3/4 inch Model 174A-70 ASME rated pressure relief valve designed specifically for protection against excessive pressure in water heating and storage applications. Engineered for closed-loop systems, this hot water boiler relief valve features a high-capacity BTU/hr rating to ensure rapid pressure discharge when system limits are exceeded. The valve is factory set at 70 PSI, providing a reliable safety threshold for high-pressure boilers. Utilizing a bronze body construction and an EPDM disc, this component offers excellent corrosion resistance and thermal stability under demanding operational conditions.
For service technicians, the Watts 174A series is the industry standard for ASME Section IV pressure relief requirements. The large orifice design facilitates high discharge rates, while the stainless steel spring maintains consistent set-point accuracy over extended service intervals. When replacing a 3/4 174A-070, verify that the system’s BTU output does not exceed the valve's certified discharge capacity. This valve is suitable for both commercial and residential hydronic heating systems where a non-adjustable, fixed-pressure safety device is required for code compliance.
Key Benefits for Technicians- ASME Section IV Certified: Ensures compliance with rigorous safety standards for pressure vessel protection.
- High-Capacity Discharge: Specifically engineered to handle high BTU/hr outputs common in modern boiler systems.
- Durable Bronze Construction: Resists mineral buildup and scale, maintaining operational integrity in hard water environments.
- Simplified Installation: Standard 3/4" NPT threaded inlet and outlet ports allow for direct replacement of existing safety valves.
- EPDM Seat Disc: Provides a tight seal and high heat resistance for reliable seating after pressure events.
What is the relief setting for the Watts 0274596?
This specific model is a fixed-pressure relief valve factory-set to 70 PSI (4.8 bar) and cannot be adjusted in the field.
Can this valve be used for steam applications?
No, the Watts 174A series is designed exclusively for water heating and storage systems; it is not rated for steam services.
Is this valve compatible with potable water systems?
While constructed of bronze, you must verify local plumbing codes regarding lead-free requirements for potable water applications versus closed-loop hydronic heating.
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 0274596 is a 3/4 inch Model 174A-70 ASME rated pressure relief valve designed specifically for protection against excessive pressure in water heating and storage applications. Engineered for closed-loop systems, this hot water boiler relief valve features a high-capacity BTU/hr rating to ensure rapid pressure discharge when system limits are exceeded. The valve is factory set at 70 PSI, providing a reliable safety threshold for high-pressure boilers. Utilizing a bronze body construction and an EPDM disc, this component offers excellent corrosion resistance and thermal stability under demanding operational conditions.
For service technicians, the Watts 174A series is the industry standard for ASME Section IV pressure relief requirements. The large orifice design facilitates high discharge rates, while the stainless steel spring maintains consistent set-point accuracy over extended service intervals. When replacing a 3/4 174A-070, verify that the system’s BTU output does not exceed the valve's certified discharge capacity. This valve is suitable for both commercial and residential hydronic heating systems where a non-adjustable, fixed-pressure safety device is required for code compliance.
Key Benefits for Technicians- ASME Section IV Certified: Ensures compliance with rigorous safety standards for pressure vessel protection.
- High-Capacity Discharge: Specifically engineered to handle high BTU/hr outputs common in modern boiler systems.
- Durable Bronze Construction: Resists mineral buildup and scale, maintaining operational integrity in hard water environments.
- Simplified Installation: Standard 3/4" NPT threaded inlet and outlet ports allow for direct replacement of existing safety valves.
- EPDM Seat Disc: Provides a tight seal and high heat resistance for reliable seating after pressure events.
What is the relief setting for the Watts 0274596?
This specific model is a fixed-pressure relief valve factory-set to 70 PSI (4.8 bar) and cannot be adjusted in the field.
Can this valve be used for steam applications?
No, the Watts 174A series is designed exclusively for water heating and storage systems; it is not rated for steam services.
Is this valve compatible with potable water systems?
While constructed of bronze, you must verify local plumbing codes regarding lead-free requirements for potable water applications versus closed-loop hydronic heating.
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.












