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Open Roads Forum  >  Truck Campers

 > Hot water heater by-pass valve

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Ziphead2

Newark

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Posted: 10/18/12 05:28pm Link  |  Print  |  Notify Moderator

I can find the shut off valve for the cold water supply to the hot water heater but not the hot water discharge. When I send the pink stuff thru the lines is this going to be a problem. Do some mfrgs use a check valve instead?

Artum Snowbird

Campbell River, B.C., Canada

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Posted: 10/18/12 05:47pm Link  |  Print  |  Notify Moderator

Answer, YES! The check valve is about 3/4 of an inch long. What you need to do is shut off the cold water intake, open the bypass so cold water is going directly to your hot water taps.

Now drain the HWT and then pressurize the system with water. This will ensure that your check valve is working. Once you have one that is stuck open, and you dump a few gallons of anti freeze out the HWT drain valve, you will realize the importance of this check.

mike


Mike and Carole
2007 Snowbird 9'6" Super Slide
2005 16.6 Double Eagle
2000 F350 7.3 SC 4X4
previously 8'10" Snowbird Camper
2006 Triple E Regency 27 foot SXL SOLD!

CloudDriver

New Jersey Shore

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Posted: 10/18/12 05:51pm Link  |  Print  |  Notify Moderator

Our Minnie has a single valve bypass setup for the water heater. There is a check valve in the hot water outlet. The one valve is a 3-way valve. A 1/4 turn of the valve handle switches between normal use and bypass. In the picture below, the valve is set to bypass.




2003 Winnebago Minnie 24F - Ford E-450


Tango, AE7UI

Taylorsville, UT

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Posted: 10/18/12 06:42pm Link  |  Print  |  Notify Moderator

Our Lance camper had a 3 valve setup to bypass the water heater which was located below the kitchen sink and easy to access.
The fifth wheel only has a single 3 way valve aand it is located behind a drawer which must be pulled to gain access.

It is a cumbersome method but patience goes a long way.


2007 Tango 2660RKS Fifth Wheel, 2006 Chevy D/A 3500 with service body,

AplusMM

St Louis Metro

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Posted: 10/18/12 08:43pm Link  |  Print  |  Notify Moderator

FWIW, I'm not a fan of the check valves, I'd rather see 3 valves. You almost never see quarter turn ball valves fail but check valves fail all the time. Just my opinion.

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