Description
The Watts LFN36M1-3/4 Brass Vacuum Relief Valve 3/4″ NPT Lead Free 200 PSI Water -15 PSI Steam is a pressure protection component used in clear heating systems to avoid vacuum conditions from forming in piping, boilers, and water distribution lines. It automatically admits air into the system when internal pressure drops below safe limits, supporting to protect equipment from damage caused by negative pressure during cooling or drainage cycles. The valve is installed in steam and hot water systems, including boilers and closed-loop HVAC systems heating circuits, where it supports safe pressure equalization and part stability during operation and shutdown.
