multi branch water manifold under evaporator name?

multi branch water manifold under evaporator name?

Postby Paul_S [OP] » September 13th 2020, 9:21pm

Hi, could anybody give me the name of the multi branch manifold that sits to the left of the engine under the evaporator? I need to order a new one but don't know what to ask for. Thanks very much if you can help.
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Re: multi branch water manifold under evaporator name?

Postby AstroWill » September 14th 2020, 3:11am

Heater control valve.

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Re: multi branch water manifold under evaporator name?

Postby Paul_S [OP] » September 14th 2020, 12:07pm

Thanks so much.
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gmc safari water heater valve broken pipe

Postby Paul_S [OP] » September 15th 2020, 2:25am

Hi all, I had the top pipe break on my water heater valve. I sent out a friend to grab me another from a breakers yard/scrap yard and he got one, but it only has 4 of the 6 pipes on it. I assume the extra pipes would be for the rear heat which doesn't work anyway. Would I get away with fitting this instead of the 6 pipe valve and just leaving the other pipes off as I am completely stuck and have no transport at all? Thanks for any help you can give.
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Re: multi branch water manifold under evaporator name?

Postby AstroWill » September 15th 2020, 3:01am

Sure, you can bypass the entire thing if you want. I wouldn't put a used valve in there as they get brittle with age, I would replace it with the proper new part.

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Re: multi branch water manifold under evaporator name?

Postby Paul_S [OP] » September 15th 2020, 11:15am

Thanks Astrowill,bypassing the entire thing, do you mean the entire rear heater? if so which pipe should I connect and which ones to leave off, it's hard to see which pipes are for the rear heater? Thanks so much for your help.
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Re: multi branch water manifold under evaporator name?

Postby augidog » September 15th 2020, 12:27pm

Paul, I say this with respect, but it has to be said.

On a specialty forum, pictures are not just for fun, they can be critical when asking for help. if you posted a pic, I'm sure someone on this excellent forum would be willing to label the connections and hoses for you. if I had the knowledge, I'd do it for you in a heartbeat.

in other words, do your part to help people help you.
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Re: multi branch water manifold under evaporator name?

Postby sixsixsixsix is online! » September 15th 2020, 3:03pm

Paul_S wrote:Thanks Astrowill,bypassing the entire thing, do you mean the entire rear heater? if so which pipe should I connect and which ones to leave off, it's hard to see which pipes are for the rear heater? Thanks so much for your help.


Or... search for those terms using his/her/it's search engine and astrosafari.com in the query line.

And like augi said, "pics or it did not happen!".

Well, he did not really say that, but he meant it.

I think...

Someone else w/o a phone.....what?
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Re: multi branch water manifold under evaporator name?

Postby Rod's Trucks » September 15th 2020, 5:19pm

I 'temporarily' removed the entire valve, by running a new hose from the engine to the heater core and back.
That was two winters ago....when I had virtually no heat, because the valve was apparently bad when I purchased the van.
The new part is still in the box, waiting for a convenient time.
I think there is a drawing in the system some place, done by one of the members, that shows the correct flow pattern of that assembly, but I am not sure if it was a 4-port, or the 6-port style.
Try searching for: HEATER CONTROL VALVE
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Re: multi branch water manifold under evaporator name?

Postby Rod's Trucks » September 15th 2020, 5:28pm

I found the great and helpful posting, with annotated pictures, by SportsBoy- from January 2018
You should be able to find it with an appropriate search.
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Re: multi branch water manifold under evaporator name?

Postby Paul_S [OP] » September 16th 2020, 12:11am

Thank you very very much all of you.
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