Vacuum relief valve LFN360, LFN360I

For automatic venting of a closed system to atmosphere when a vacuum is created. The Watts LFN360 Vacuum Relief Valve permits air to enter and prevent vacuum conditions that could siphon the water from the system, resulting in collapse of a tank or water heater or equipment burn out. They consist of a Lead Free* brass body construction and a low profile design. Series LFN360, LFN360I can be mounted in a horizontal or vertical position and are tested and rated to ANSI Z21.22, and are CSA certified. Model LFN360 comes with 1/2 in. or 3/4 in. male NPT connection. Maximum Steam Working Pressure: 15psi (103 kPa).