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diaphragm relief valve
and four test cocks
It is commonly used on walls
PAINT THINNER
3/4"VACUUM RELIEF VALVE MNPT BRASS LOW PRESSURE STEAM H20 GALV RAIN CAPS diaphragm relief valveSeries LFN36 Lead Free* Water Service Vacuum Relief Valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment. They have a Lead Free* brass body construction with NPT male inlet connection and a protective cap. Series LFN36 has a low profile design, is tested and rated to ANSI Z21. 22, and
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