? on WH Check valve

mikenmo · 07-08-2011, 10:07 AM

The checkvalve on the out flow side of the water heater is again chattering, I replaced it about 1 year ago. My question is; is this valve necessary? I think I read somewhere it wasn't but I can't find that post. It is a real pain to get to to, we full time so we don't winterize the rig.

TIA

Clay L · 07-08-2011, 10:57 AM

It is needed for winterizing but if you don't ever intend to winterize then you could remove it.

We full time also and never intended to winterize again but then last winter my SIL passed away. My wife is the executor of the trust and we had to go to CO in Feb so guess what?

After a few days I was able to connect to water, sewer and electricity, de-winterize and live in the motor home so it worked out okay.

Wizard · 07-08-2011, 11:58 AM

Had one of mine out for years with no problems. When I was home for extended times, I drained anyway so didn't need to winterize. Also kept a heater going inside on the coldest days just to be sure.

DAN L · 07-09-2011, 02:48 AM

Quote:

Originally Posted by mikenmo

The checkvalve on the out flow side of the water heater is again chattering, I replaced it about 1 year ago. My question is; is this valve necessary? I think I read somewhere it wasn't but I can't find that post. It is a real pain to get to to, we full time so we don't winterize the rig.

TIA

if you have a check valve that you can take apart, you can just take the guts out and reassemble it.

the part numbers for the camco brass check valves that you cannot disassemble are male: 882032130, female: 23303

John Hilley · 07-09-2011, 09:24 AM

I don't think the water heater check valve has any thing to do with winterizing. What allows winterizing without including the water heater are the water heater by pass valve or valves. The check valves are to prevent the heating of the supply water line.

gewilli · 07-09-2011, 09:45 AM

you can remove, you will then need to drain and blow out the lines rather than antifreeze. You can also install a ball valve in its place, and close when you want to winterize.

I just replace mine this spring for the first time. hoping it lasts another 6 years.

ernieh · 07-09-2011, 11:27 AM

Quote:

Originally Posted by John Hilley

I don't think the water heater check valve has any thing to do with winterizing. What allows winterizing without including the water heater are the water heater by pass valve or valves. The check valves are to prevent the heating of the supply water line.

The inlet check valve works as you describe. The outlet valve is for winterizing. You can check out the plumbing diagrams for yourself on this forum.

Gary RVRoamer · 07-09-2011, 11:58 AM

Quote:

I don't think the water heater check valve has any thing to do with winterizing. What allows winterizing without including the water heater are the water heater by pass valve or valves. The check valves are to prevent the heating of the supply water line.

The single valve bypass set-up requires the use of a check valve to make it work. Multiple valve bypass designs do not.

targaboat · 07-09-2011, 12:06 PM

Two check valves and one manual valve are necessary for winterizing. An alternate is there manual valves which can also be used for winterizing. The saved money with the plastic internal parts check valves. Leaving out the cold side inlet check valve will allow the water up stream in the cold water line back flow from the WH when the stuff like the toilet is flushed and become slightly warm. That never bother us however. So go for and and remove them once and for all. And you can still winterize with air pressure.