Most tanks on RV's are 6 gallons.. Most showers 2 GPM (and you need like 1.5 hot) that gives you 4 minutes of water flow.
Propane heats fast so you can extend that a couple minutes.. Eletric not so fast. and mine even slower (I "Dialed down" my electric to 375 Watts. Saves me going out and resetting 30 amp breakers from time to time).
Solution is a valve 1/2 inch There are two types I've used and I will report
1/2 inch IPT ball valve (Quarter turn full shut off) with adapters so it fit the shower hose.. Fully shutting off the water can often result in a blast of hot or cold when you restore flow
1/2 inch Valve I got at Mennards custom designed for shower use. It does not fully shut off. "Dribbles".. alternative is the "Smart pulse" Valve used with Oxygenics shower heads. Identical in function.. NO hot/cold blast upon restoring flow.
This means I wet down... SHut off. Soap up.. Restore flow and rinse off.
And that.. is how you do it
(Actually I hike to the park shower most of the time but when I was stuck in GA and it was 2 weeks of "Record number of days over 90 degrees" (Global warming is a myth they say.. A million to one are the odds of anything coming from Mars tehy say (From a musical of the war of the worlds). that's 14 new record length of days over 90 degrees.. Oh well)
I used the RV shower beccause by the time I walked back to the RV from teh park's facility..... I needed another shower.
