Watts 0121467 Relief Valve

For high-capacity safety in hot water heating and domestic supply boiler applications, the Watts 0121467 (LF174A-60) provides essential overpressure protection. As a lead free relief valve, this model is the direct technical successor to the legacy 0274547, meeting modern regulatory standards for potable and non-potable systems. Engineered with a durable copper silicon alloy body, it features a 3/4 inch NPT female inlet and outlet designed for seamless integration into ASME boiler pressure systems. The valve is factory-set at 60 PSI with a high-performance 1,100,000 BTU/hr steam relief capacity, ensuring it can handle significant thermal expansion without compromising equipment integrity.

This boiler pressure relief valve utilizes a non-mechanical seat-to-disc alignment and a non-metallic disc-to-metal seating interface to prevent sticking and freezing, even in corrosive water conditions. The stainless steel spring provides reliable force for automatic reseating, while the integrated test lever allows for manual diagnostics during routine maintenance. Technicians should note that the seat is positioned above the drain to prevent sediment accumulation from fouling the seal. For contractors looking for Watts 174A 60 PSI replacements, this unit offers a robust, code-compliant solution for hot water space heating reliability.

• ASME Section IV Certified: Rated for a high-volume capacity of 1,100,000 BTU/hr to protect large-scale heating equipment.
• Lead Free Construction: Manufactured with a lead free copper silicon alloy body, making it the required update for the discontinued 0274547.
• Anti-Fouling Design: The raised seat prevents water and sediment from being trapped, significantly reducing the risk of seat leakage.
• Corrosion Resistant: Features a high-temperature resistant water seal and stainless steel spring to isolate internal working parts from harsh media.

Is the Watts 0121467 a direct swap for the older 0274547 model?
Yes, the 0121467 is the specific lead free replacement for the 0274547. It maintains the 3/4" NPT connections and 60 PSI set point while upgrading the material profile to meet current low-lead requirements.

Can this valve be used as an operating control?
No, this is an emergency safety relief device only. It is designed to open during overpressure events and should not be used to regulate normal system operating pressures.

What is the maximum temperature rating for this relief valve?
The series is typically rated for operations up to 250°F (121°C), suitable for most high-demand hot water boiler applications.

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.