Watts 0138457 1/2" N36 Vacuum Relief Valve. Vacuum Relief Valves function in water heater applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system permanently damage or ruin your water heater. This Vacuum has a brass body, a single NPT male inlet connection, and a protective cap. The Vacuum Relief Valve can also be used with low pressure steam and water service tanks.
4.5 out of 5 rating is our rating for plumbersstock.com, we got that rating because we have lots of experience and great people with expertise in plumbing. BUT WE WANT YOUR HELP. This product doesn't have any reviews yet, and we don't want to write our own reviews. It is more valuable to us that the customers get to share their experience with our products. Please, if you have any experience with this product, take a moment to share and help someone else who is trying to make a decision. Thank you!