Water too hot during Navy shower

[Jbrowland]

When taking Navy showers I click the little button to stop water flow to wash but when I turn it back on via the water flow button the water is extremely hot when it comes out for about 15-20 seconds and then returns to where I set it when I started the shower. Is this normal? If not, what could be causing this? The only thing I could think of is maybe the hot water pressure is stronger.

I haven't noticed yet if this happens while dry camping but it did happen when hooked up to water and electric. We use a pressure reg on the hose.

I can deal with this but my worry is fo my daughter.

Stumped. Thanks!

[tenbear]

I have been thinking of installing check valves but I have read that check valves reduce the flow.

Would someone who has installed check valves that don't reduce the flow post a link to the valve. Thanks.

[RVhiker]

As others did, I installed a check valve in the cold water line (as close as possible to the shower faucet) and completely eliminated the problem of scalding hot water at first when turning on the shower head valve.

[Jbrowland]

toedtoes wrote:

whiteeye42 wrote:

toedtoes wrote:
If you're worried about scalding, why not lower the temp setting on the hot water heater? And that way your daughter won't scald herself by accidentally turning on only the hot water either.

this is a little hard to do since not all rv water heaters have an adjustable temp setting most are fixed settings

All mine have had low, medium and hot. Didn't realize these newfangled RVs are lacking such a simple thing... :S :B

Having a setting dial would make too much sense now wouldn't it? 😉

[toedtoes]

whiteeye42 wrote:

toedtoes wrote:
If you're worried about scalding, why not lower the temp setting on the hot water heater? And that way your daughter won't scald herself by accidentally turning on only the hot water either.

this is a little hard to do since not all rv water heaters have an adjustable temp setting most are fixed settings

All mine have had low, medium and hot. Didn't realize these newfangled RVs are lacking such a simple thing... :S :B

[mdamerell]

I use the shut off on the Oxygenic when bathing the GB (4 yrs old) to keep the water in the shower while she lathers up. Have not had issues with a hot or cold blast. The Oxygenic was a good investment in my book.

[whiteeye42]

toedtoes wrote:
If you're worried about scalding, why not lower the temp setting on the hot water heater? And that way your daughter won't scald herself by accidentally turning on only the hot water either.

this is a little hard to do since not all rv water heaters have an adjustable temp setting most are fixed settings

[Jbrowland]

Thanks as usual everyone for your responses. Always nice to get seasoned food for thought so to speak.

I don't think my water heater is adjustable. Just checked. I wish it were that easy!

So to those of you who "upgraded" to the oxygenic style shower head. The product claims to dribble water while water is restricted thus avoiding a hot or cold blast of water when one turns the flow restrictor off during a Navy shower. Is this reality? If so, this seems to solve my issue for about $30 if it works as advertised.

[toedtoes]

If you're worried about scalding, why not lower the temp setting on the hot water heater? And that way your daughter won't scald herself by accidentally turning on only the hot water either.

[Gjac]

When I dry camp which is 95% of the time I turn my water heater on 10 mins before I want to take a shower in the summer and 20 mins in the fall. I don't camp in the winter up north. I use the hot water valve only so there is no variation in temperature when you shut the facet off to soap up or turn it back on to rinse off. In addition to not getting burned with hot water you save water when dry camping along with propane(although not to main reason for doing this). I can get two showers before the water starts to cool off.

[mdamerell]

Bird Freak wrote:
I solved it by not taking navy showers when hooked up.

X2 - I took "Navy showers" when in the Navy, I no longer desire to. A nice shower is a luxury I allow myself.

Back on subject: Our Oxygenic drips when you flip the "shut off button" to prevent this.

[tenbear]

Dutch_12078 wrote:
I solved both the hot and cold shower restart issue (two different motorhomes) by installing check valves where the water lines connect to the shower faucets. The problem occurs because one line or the other has a slightly higher pressure than the other, probably due to upstream fixtures, so when you turn off the shower head valve, the higher pressure line forces its source back down the other line for some distance until they equalize. The check valves prevent the backfeeding. I used PEX check valves from Watts/Sea Tech that required just cutting the lines and pushing the ends into valve bodies. Just make sure the arrows are pointing towards the faucets.

How about a link? :@

[Passin__Through]

Have you thought about adding a check valve to each line on the other side of the shower wall (if accessible)? That would prevent backflow by the hot water into the cold water line.

[Bird_Freak]

I solved it by not taking navy showers when hooked up.

[ScottG]

I installed check valves as well and got the transition time down to about 1 second.

[Dutch_12078]

I solved both the hot and cold shower restart issue (two different motorhomes) by installing check valves where the water lines connect to the shower faucets. The problem occurs because one line or the other has a slightly higher pressure than the other, probably due to upstream fixtures, so when you turn off the shower head valve, the higher pressure line forces its source back down the other line for some distance until they equalize. The check valves prevent the backfeeding. I used PEX check valves from Watts/Sea Tech that required just cutting the lines and pushing the ends into valve bodies. Just make sure the arrows are pointing towards the faucets.