shower head

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   I've found that the slight flow with that valve "off" allows the hot water to creep into the shower head hose, so when I turn it back on I get a scalding flow for several seconds.  I assume this happens because the only expansion mechanism on factory RV water systems is an air pocket at the top of the water heater.  Home systems now get expansion bladders.  But the air pocket must not be enough to prevent the higher pressure hot water from overpowering the cold water pressure.  I've resorted to turning off the main hot/cold valves when I soap up.

BTW, I still have the factory shower head.  Anyone NOT notice this with another shower head?

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techntrek Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group - pHp Joined: 29 Jul 2009 Location: MD Online Status: Offline Posts: 9059	Topic: shower head Posted: 11 Jul 2012 at 10:49am
	I've found that the slight flow with that valve "off" allows the hot water to creep into the shower head hose, so when I turn it back on I get a scalding flow for several seconds. I assume this happens because the only expansion mechanism on factory RV water systems is an air pocket at the top of the water heater. Home systems now get expansion bladders. But the air pocket must not be enough to prevent the higher pressure hot water from overpowering the cold water pressure. I've resorted to turning off the main hot/cold valves when I soap up. BTW, I still have the factory shower head. Anyone NOT notice this with another shower head?
	Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual

g4royce Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 20 Nov 2010 Location: PortStLucie FL Online Status: Offline Posts: 335	Posted: 11 Jul 2012 at 1:02pm
	The hot water buildup happens to us too on both the factory showerhead and the Oxygenics one when using the shutoff valve. It's easier to just turn the water off. After a few times in the beginning of the season, you remember how much the hot & cold tap should be turned to get the temperature you like. We also have Mini-Magna-doodle in there to write things down so at the beginning of the season, we write down how we like our water temperature in case we forget.
	ChaiPod 2009 RP152 2011 Hyundai Santa Fe 3.5L V6

gdfaini Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Sep 2010 Location: Virginia Online Status: Offline Posts: 14	Posted: 13 Jul 2012 at 9:36am
	I could not remove the flow restricter disk without risking damaging the faucet assy or siphon mechanism. I left it in. The Oxygenics still seems to work well.
	Glenn Hyundai Santa Fe <-> RP 173