One way valve on hot water in shower
Hi, I am not able to find what I am looking for and was hoping someone could point me to some literature or instructions on adding a one way valve to the hot water side of the shower valve. I watched...
Forum Discussion
wa8yxm wrote:arcsum68 wrote:
Per the video when you use the switch on the showerhead to shut off flow, the cold water will back fill into the hot water side since the pressure is greater and thats why when you turn it back on it will be cold for a few seconds.
Since both the hot and cold water are pressurized by the self same PUMP that.. it male bovine produced organic fertilizer (AKA BS)
What happens is when the water stops the hot cools a bit and "Contracts" sucking cold in. The solution is to use a better valve that does not 100% turn off flow. the Oxygenics "Smart Pulse" valve is like this. it allows a dribble of watter to flow. So does the generic valve I got at Mennards years back (Alas no link it's been 15 years)
Either of these solves the issue for about 10 bucks.
another possible cause of the cold water problem is WH bypass systems with ONE lever, rather than the TWO lever systems. The one lever systems use a one way check valve that often has highly non linear characteristics. The result is very noticeable water temp changes with flow, very noticeable when water is down to a trickle then back up again. Solution, pull the check valve that is installed and install a WH bypass with two levers. That solved our issue along with two other camper friends complaining about the same problem.
