47-55.1 Heater valve parts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chris(NJ) · 02-11-2020, 02:16 PM

Since the weather turned cold, I developed a slight coolant leak. It made itself obvious the other day. Problem is that when I bought the truck, the heat/a.c. system was installed and I'm having some trouble identifying the manufacturer or figuring out a replacement part. The hoses do say Parker on them, but searching that didn't give me a result w/ this part. Heater core doesn't have a name on it that I can see. I can snap more pics.
I can take more pics, but looks like the other side of the valve has a control module(?) on it. (Motor is a standard sbc/350)
Anyone here have any ideas?

**mongocanfly** · 02-11-2020, 02:27 PM

Resembles a old air valve...https://www.oldairproducts.com/produ...-pull-to-close

Chris(NJ) · 02-11-2020, 02:40 PM

Quote:

Originally Posted by mongocanfly

Resembles a old air valve...https://www.oldairproducts.com/produ...-pull-to-close

Damn, that was quick...THANK YOU!
Although I guess I would need the one w/ the electric servo. Which is, of course, 3x the price

Chris(NJ) · 02-11-2020, 03:14 PM

Actually...while it's up here; When changing it out, is simply capping each line sufficient? any air bubbles should work their way out during normal operation, right? Or will I need to run it w/ the heater on, radiator cap off and burp it as if I was doing a coolant change?

mr48chev · 02-11-2020, 03:47 PM

Parker is just a brand of high quality hose and fittings that is normally associated with hydraulic hose but they do show heater hose.

That looks to be a bypass style valve that while shutting off the flow to the heater keeps the coolant circulating though the heater hose. Important for a couple of engines that we as a group use quite often but the exact ones slip my mind.

Zippi · 02-11-2020, 06:56 PM

Quote:

Originally Posted by Chris(NJ)

Since the weather turned cold, I developed a slight coolant leak. It made itself obvious the other day. Problem is that when I bought the truck, the heat/a.c. system was installed and I'm having some trouble identifying the manufacturer or figuring out a replacement part. The hoses do say Parker on them, but searching that didn't give me a result w/ this part. Heater core doesn't have a name on it that I can see. I can snap more pics.
I can take more pics, but looks like the other side of the valve has a control module(?) on it. (Motor is a standard sbc/350)
Anyone here have any ideas?

I just changed the heater valve in my 49 about 3 months ago. I have the manual and it was an easy fix and the valve was only $38 bucks if memory serves me correct from oldairproducts.com. I drained the coolant system when I changed mine.

Chris(NJ) · 02-11-2020, 08:51 PM

Quote:

Originally Posted by Zippi

I just changed the heater valve in my 49 about 3 months ago. I have the manual and it was an easy fix and the valve was only $38 bucks if memory serves me correct from oldairproducts.com. I drained the coolant system when I changed mine.

Thanks! Did you change it b/c yours was leaking?

Zippi · 02-11-2020, 09:15 PM

Quote:

Originally Posted by Chris(NJ)

Thanks! Did you change it b/c yours was leaking?

Yup. Mine was leaking in the same place. I'd always have a puddle of anti freeze on the garage floor.

Volfandt · 02-11-2020, 09:23 PM

I installed that same oldair bypass valve in my 49 when I upgraded to a Harrison Deluxe fresh air heater. The plan is to replace it with a Ranco valve sometime in the future but it's working so well I'm in no hurry to find and restore one. I got mine off of amazon.

Chris(NJ) · 02-11-2020, 10:28 PM

So do you guys think there's a better replacement that I should consider? Since I have the electronic servo controlled valve, it's $115 from OldAir. At that price, if theres a higher quality option, I'll consider that instead. Or should I just stick w/ the OldAir option...

**mongocanfly** · 02-11-2020, 11:11 PM

I'm not sure if there are motor operated or not , but I do know they make the cable version...in brass...instead of plastic

Chris(NJ) · 02-12-2020, 12:43 PM

As luck would have it, I also noticed I have a refrigerant leak. You can actually see it in the picture above if you look closely at the hose at the very top of the picture where the crimped fitting attaches. Who decided to make refrigerant the same color as coolant?! Wouldn't blue, or something have been a better choice? lol So tempted to dump the a/c system

Zippi · 02-12-2020, 01:38 PM

Quote:

Originally Posted by Chris(NJ)

As luck would have it, I also noticed I have a refrigerant leak. You can actually see it in the picture above if you look closely at the hose at the very top of the picture where the crimped fitting attaches. Who decided to make refrigerant the same color as coolant?! Wouldn't blue, or something have been a better choice? lol So tempted to dump the a/c system

You sure that's not where the anti freeze from the valve may have puked a little and got it on the AC line? Just a thought. Clean it off real good and run it to check and see for sure.

Zippi · 02-12-2020, 01:51 PM

This is where my heater valve is. Easy to get to. Glad it wasn't in the cab.

Chris(NJ) · 02-12-2020, 01:56 PM

Quote:

Originally Posted by Zippi

You sure that's not where the anti freeze from the valve may have puked a little and got it on the AC line? Just a thought. Clean it off real good and run it to check and see for sure.

I thought the same thing. Took one of those uv flashlights to it, and it lit up. So my understanding is the dye in the refrigerant will glow, while coolant does not.

Quote:

Originally Posted by Zippi

This is where my heater valve is. Easy to get to. Glad it wasn't in the cab.

Looks like we have the exact same setup

mr48chev · 02-12-2020, 02:59 PM

I'm not finding the servo operated bypass valve in the old air list of heater valves https://www.oldairproducts.com/produ.../heater-valves

There are some valves that are servo controlled that work similar but are bulkier.

Here is one with all 5/8 connections http://www.partdeal.com/omega-electr...RoCp_cQAvD_BwE

The old Mopar Vacuum controlled one is what I was originally looking for https://www.ebay.com/p/9024369291?ii...hoCxJcQAvD_BwE

Vacuum operated 4 seasons valve for Dodge Daytona. https://www.carid.com/1987-dodge-day...228466924.html That has an oem part number to search.

Chris(NJ) · 02-12-2020, 05:54 PM

Quote:

Originally Posted by mr48chev

I'm not finding the servo operated bypass valve in the old air list of heater valves https://www.oldairproducts.com/produ.../heater-valves

There are some valves that are servo controlled that work similar but are bulkier.

Here is one with all 5/8 connections http://www.partdeal.com/omega-electr...RoCp_cQAvD_BwE

The old Mopar Vacuum controlled one is what I was originally looking for https://www.ebay.com/p/9024369291?ii...hoCxJcQAvD_BwE

Vacuum operated 4 seasons valve for Dodge Daytona. https://www.carid.com/1987-dodge-day...228466924.html That has an oem part number to search.

Yea for some reason it doesn't pop up in the heater valve section unless you search for it....
https://www.oldairproducts.com/produ...ater-valve-kit

mr48chev · 02-13-2020, 01:22 AM

That is a tad on the spendy side

Chris(NJ) · 02-13-2020, 08:27 AM

Quote:

Originally Posted by mr48chev

That is a tad on the spendy side

Tell me about it 😒
Posted via Mobile Device

02-11-2020, 02:16 PM	#1
Chris(NJ) Registered User Join Date: Nov 2017 Location: NJ Posts: 92	Heater valve parts Since the weather turned cold, I developed a slight coolant leak. It made itself obvious the other day. Problem is that when I bought the truck, the heat/a.c. system was installed and I'm having some trouble identifying the manufacturer or figuring out a replacement part. The hoses do say Parker on them, but searching that didn't give me a result w/ this part. Heater core doesn't have a name on it that I can see. I can snap more pics. I can take more pics, but looks like the other side of the valve has a control module(?) on it. (Motor is a standard sbc/350) Anyone here have any ideas? Attached Images __________________ Chris(NJ)'s '49 Built Build and fixing stuff thread

02-11-2020, 02:27 PM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,582	Re: Heater valve parts Resembles a old air valve...https://www.oldairproducts.com/produ...-pull-to-close Attached Images __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

02-11-2020, 03:14 PM	#4
Chris(NJ) Registered User Join Date: Nov 2017 Location: NJ Posts: 92	Re: Heater valve parts Actually...while it's up here; When changing it out, is simply capping each line sufficient? any air bubbles should work their way out during normal operation, right? Or will I need to run it w/ the heater on, radiator cap off and burp it as if I was doing a coolant change? __________________ Chris(NJ)'s '49 Built Build and fixing stuff thread

02-11-2020, 03:47 PM	#5
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,279	Re: Heater valve parts Parker is just a brand of high quality hose and fittings that is normally associated with hydraulic hose but they do show heater hose. That looks to be a bypass style valve that while shutting off the flow to the heater keeps the coolant circulating though the heater hose. Important for a couple of engines that we as a group use quite often but the exact ones slip my mind. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

02-11-2020, 09:23 PM	#9
Volfandt Registered User Join Date: Jan 2018 Location: Knoxville TN Posts: 87	Re: Heater valve parts I installed that same oldair bypass valve in my 49 when I upgraded to a Harrison Deluxe fresh air heater. The plan is to replace it with a Ranco valve sometime in the future but it's working so well I'm in no hurry to find and restore one. I got mine off of amazon. Attached Images

02-11-2020, 10:28 PM	#10
Chris(NJ) Registered User Join Date: Nov 2017 Location: NJ Posts: 92	Re: Heater valve parts So do you guys think there's a better replacement that I should consider? Since I have the electronic servo controlled valve, it's $115 from OldAir. At that price, if theres a higher quality option, I'll consider that instead. Or should I just stick w/ the OldAir option... __________________ Chris(NJ)'s '49 Built Build and fixing stuff thread

02-11-2020, 11:11 PM	#11
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,582	Re: Heater valve parts I'm not sure if there are motor operated or not , but I do know they make the cable version...in brass...instead of plastic __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

02-12-2020, 12:43 PM	#12
Chris(NJ) Registered User Join Date: Nov 2017 Location: NJ Posts: 92	Re: Heater valve parts As luck would have it, I also noticed I have a refrigerant leak. You can actually see it in the picture above if you look closely at the hose at the very top of the picture where the crimped fitting attaches. Who decided to make refrigerant the same color as coolant?! Wouldn't blue, or something have been a better choice? lol So tempted to dump the a/c system __________________ Chris(NJ)'s '49 Built Build and fixing stuff thread

02-12-2020, 01:51 PM	#14
Zippi Registered User Join Date: Nov 2019 Location: Southern Indiana Posts: 585	Re: Heater valve parts This is where my heater valve is. Easy to get to. Glad it wasn't in the cab. Attached Images __________________ If you can't fix it with duct tape, it's an electrical problem. 1949 5 Window 3100 https://zippi6.wixsite.com/adtruck

02-12-2020, 02:59 PM	#16
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,279	Re: Heater valve parts I'm not finding the servo operated bypass valve in the old air list of heater valves https://www.oldairproducts.com/produ.../heater-valves There are some valves that are servo controlled that work similar but are bulkier. Here is one with all 5/8 connections http://www.partdeal.com/omega-electr...RoCp_cQAvD_BwE The old Mopar Vacuum controlled one is what I was originally looking for https://www.ebay.com/p/9024369291?ii...hoCxJcQAvD_BwE Vacuum operated 4 seasons valve for Dodge Daytona. https://www.carid.com/1987-dodge-day...228466924.html That has an oem part number to search. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

02-13-2020, 01:22 AM	#18
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,279	Re: Heater valve parts That is a tad on the spendy side __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.