How to Repair a Leaking Water Heater Pressure Relief Valve. The pressure relief valve on a hot water heater can leak over time. I just flushed my hot water heater as you mentioned and now the pressure relief valve is leaking. Leighton asks, I just drained my hot water heater, and now the pressure relief valve is leaking. Is this something I can replace on my own, or should I call a. Water Heater Pressure Relief Valve Prevent Water Heater Explosion Replace a Relief Valve Duration 602. FIX IT Home Improvement Channel 750,886 views. Fast Water Heater Company follows local plumbing codes for water heater installations. These safety codes ensure your water heater runs safely for years. Is this something I can replace on my own, or should I call a plumber Leighton. Hi Leighton,Pressure relief valves sometime develop a drip when opened for the first time in years. Try opening and closing it a few times to see if it will seat itself. If you have a large leak or the drip doesnt stop on its own in a day or two, the valve will need to be replaced. Whether you can replace it yourself will depend on your skill level, but as far as plumbing repairs go, its not that difficult. If you do try to fix it, here are the basic steps involved First, turn off the gas to the water heater, or flip the breaker if its electric. Close the cold water cut off valve going into the water heater. Open the valve at the bottom and the pressure relief valve for a minute to drain a little water out of the tank and relieve the pressure. Remove the overflow pipe from the pressure relief valve. If its been glued or soldered in place, it may have to be cut off. Plumbing/replace-water-heater-hero.jpg' alt='How To Install Pressure Relief Valve For Water Heater' title='How To Install Pressure Relief Valve For Water Heater' />Use a pipe wrench to unscrew the old pressure relief valve. Wrap Teflon tape around the threads of the new valve, and screw it in until tight, orienting the overflow pipe opening away from the tank. Reattach the relief valve drain pipe using Teflon tape on the threads. If you have to replace the drain pipe, use pipe and glue that is rated for hot water such as CPVC rather than PVC. Open the cold water cut off and check for leaks around the relief valve. Good luck with your project,Further Information. Our Tank Booster combines a thermostatic mixing valve, flexible connector and water heater tee into one solution that can greatly increase your hot water output. Water Pressure Regulator Pressure Reducing Valves. Index Of Parent Directory Windows Iso Torrent more. Cash Acme has been manufacturing water pressure reducing valves to help regulate downstream pressure for more than 1. Each pressure regulating valve PRV is tested for quality and efficiency before leaving our factory. Most Cash Acme water pressure regulating valves come preset at 4. As the downstream water pressure approaches the set pressure, the valve will close off, not allowing water to pass through. As that downstream water pressure drops, typically due to water usage, the pressure regulator will open back up letting water through to recharge the system as long as the demand is needed. With more than 1. Browse our complete selection of PRVs below.