RV Shower Hot (or cold) water blast
We use the shower head "shut off" to conserve water, when we turn it back on the water is hot and it takes a few seconds to normalize to the set temperature. Any solutions? Best Regards
Forum Discussion
AlwaysDreaming wrote:pauldub wrote:
I bought a check valve to put in the water line but never did install it. I did install a shutoff valve at the shower head and that has totally cured the cold water blast problem. The problem is caused by the water dribbling from the shower head with the built in shutoff that doesn't fully shut off. Just add an inline shut off and all is good and it's easy to do. I bought the KES Shower Head Shut-Off Valve Brass with Metal Handle Polished Chrome K1140B3 from Amazon for about $12.
I have on K1140B3 on order and will try this first, by removing and replacing the dribble valve . If it works, I will return the check valves.
I don't understand why the dribble valve causes the problem, but if replacing it with a shut off works, I don't need to know.
Best Regards, Thanks
I have a shower head with a positive shutoff valve, and it doesn't stop the hot or cold blasts any better than the dribble valves. The blast is caused when the blocked water flow allows either the cold or hot line to back pressure the other line through the open mixer valves due to differences in the pipe runs. That's what causes the momentary blast when you open the shower head valve. Of course if you take too long soaping up, the water in the hose can cool a bit too, but that's usually not enough to be a problem.
