Watts 0121549 Valve Freon Internal Relief Protection: Minimizes the

Internal Relief Protection: Minimizes the risk of over-pressurization with a reliable internal relief valve design

Common Questions What is the difference between Class FT and Class FB on this coil

replacing with an OEM 311213-403 restores factory-spec durability

Common indicators include the furnace short cycling

allowing for advanced HVAC diagnostics and twinning capabilities when integrated with compatible thermostats like the FocusPRO or VisionPRO IAQ

Watts 0121549 Valve Freon Internal Relief Protection: Minimizes theThe Watts 0121549, also identified by model LF174A 1 1 2 150, is a high capacity boiler pressure relief valve designed for heavy duty commercial and industrial hot water heating applications. This ASME rated relief valve features a lead free copper silicon alloy body and 1. 5 inch NPT threaded female connections, engineered to handle a steam discharge capacity of up to 7,630,000 BTU hr. As a veteran technician knows, the Watts LF174A series is