McDermott installed a new hot water heater in my basement and removed the old one. He noticed the main water valve above the water heater was corroded and leaking, and he replaced that, too. While he was here, I asked him to tighten the toilet in the hall bathroom. He discovered it ha...
Dual Check Valve– This is the most common method of protection. The backflow devices are considered “non-testable” and the only required maintenance is rebuild or replacement of the device once every five years. A tag should always be hanging from the device identifying installation date, expi...
Larger check valves are typically rated at a 5-7 year life before replacement is needed. Residential ball check valves may have an easier service life and last a bit longer. Debris on the valve seat can prevent a ball valve from closing fully, or the valve seat may become deformed or...