Help Support Bigcoupe.com

Heater valve

Post in this forum for topics relating to the interior.

Moderators: ron, bfons, GRNSHRK

Post Reply
jsspagg
Posts: 7
Joined: Fri Jun 27, 2014 3:11 pm
Location: Southern California

Heater valve

Post by jsspagg » Sat Nov 21, 2020 4:53 am

Pretty much trying to replace what I can where I can.... which brings me to the heater valve. I was told that they all pretty much leak and I saw some evidence of a leak stain in my existing heater valve. I happen to have an extra one (pictured) that came out of another car and was not intending on using it. The one pictured appears to be in better condition and I did not see any evidence of leaking when I removed, though no guarantee. I am not able to source a new one so I'm trying to figure out if there is a way to pressure/leak test these valves.

Anyone do this before?
Attachments
Heater Valve.jpg
Heater Valve.jpg (768 KiB) Viewed 41 times

User avatar
Ralph in Socal
Platinum Member
Platinum Member
Posts: 2382
Joined: Tue Apr 14, 2009 3:32 am
Location: High Desert of SoCal

Re: Heater valve

Post by Ralph in Socal » Sat Nov 21, 2020 5:18 am

I’ve gravity tested by installing the valve to the heater core and extension pipe then standing the assembly on end and filling with water. The valve would be at the bottom and experiences gravity pressure from the water

An old heater valve that appeared good leaked at the selector shaft seal

Of course you can rig up a couple pieces of hose and a pressure gauge to the two ports and apply about 10 psi to get it under higher pressure

New valves are available on ebay coming from Lithuania. Somewhat of a long lead time though

Ralph
There is a very fine line between "Hobby" and Mental Illness.

85 635csi Zinno Auto
84 528i Euro
83 635 Euro Arktik
81 528i Kastanien 5-speed
88 528e Bronzit (Granpa Car)
86 535i Auto (For Sale)
81 633 csi (retired)

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests