Watts 0121491 Relief Valve Refrigerant What shaft sizes are compatible

What shaft sizes are compatible with this direct-coupled mount

Automatic Condensate Management: The internal automatic drain ensures consistent liquid removal without the risk of manual oversight or system flooding

2 to 30 degrees F or 1 to 17 degrees C Adjustable Differential

Extended Probe: The 4-inch thermal element delivers responsive temperature sensing for rapid relief during thermal expansion cycles

spinning at a fixed 3000 RPM to deliver consistent airflow for residential Amana and Goodman furnaces

Watts 0121491 Relief Valve Refrigerant What shaft sizes are compatibleFor contractors servicing high capacity hydronic systems, the Watts 0121491 (LF174A 60) is the industry standard replacement for discontinued models like 0275114 and the original 174A 1 60. This 1" NPT boiler pressure relief valve is specifically engineered for hot water heating and domestic supply boilers, providing emergency relief when system pressure exceeds 60 PSI. Built with a lead free copper silicon alloy body, it features a non metallic disc