Watts® LFN36-M1-1/2 Lead Free Water Service Vacuum Relief Valve, 1/2" SummerEndSale Apply 4 times per year:

Apply 4 times per year: Early Spring

Size: 30" x 32" x

Accuracy: +/- 0

Multi-cat scoopable scented cat litter

porous concrete and masonry

Watts® LFN36-M1-1/2 Lead Free Water Service Vacuum Relief Valve, 1/2" SummerEndSale Apply 4 times per year: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. It consists of a lead free brass body construction with npt male inlet connection, and a protective cap. 1 2" Lead free Allows air to enter a closed system to automatically relieve vacuum conditions which could siphon the water from the system,