American Standard single lever shower and tub faucet manufacturered Feb. 1997 no matter what position lever is in a steady stream of hot water continues to pour out. I changed cartridges from plumbing supply part #023529-0070A twice. Still same original problem, hot water continues to pour out of faucet inan off position. Please help me solve this problem. Thank you so much.
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These types faucets have a what is called an anti scald valve build into them, it is required by law, it is either defective or out of adjustment, contact a local hardware store for more detailed info.
If this is a new installation or someone has removed the lever and put it back, take the lever off. There should be an plastic insert with grooves and a stop on it, which allows the lever to only go so far.This is removable. The insert acts as a stop to prevent scalding. you should be able to pull it out and reinstall in with the stop more toward the left allowing the lever to go more toward the hot side. Hopefully this helps out.
the pressure in pipes has to do with the volume. The bigger the pipe the better the pressure. Take the time to trace out your hot water line and see if you can find any old galvonized pipe, thats usually the problem in most cases. galvonized pipe over time will rust and corrode causing restriction in the water line. replacing it with 1/2" copper should solve the problem.
If this is a newer valve what is probably happening is the valve is a scald guard valve and is shuting itself off when it senses no pressure on the cold side. I don't have a lot of experience with am. std. valves but I'm sure you can get instruction on line to set heat setting on valve higher. Thank you.
Try draining the system and apply air pressure (min 30psi) to each faucet. Open other hot water faucets to allow pressure to vent. Next try draining and cleaning the hot water tank.
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