Description
The Watts 100XL-4-150 Temperature & Pressure Relief Valve is a relief control used in HVAC systems. It is mounted on the water heating and hydronic part to release excess pressure or temperature buildup when preset limits are exceeded. The valve operates with a 3/4″ NPT connection size and a temperature rating of 210F, allowing automatic discharge of fluid under abnormal operating conditions. It operates as part of the protection circuit in the heating part, assisting to maintain controlled operating conditions and preventing stress on boilers, storage tanks, and related thermal systems during high-temperature or pressure events.
