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Old 05-20-2008, 10:33 PM
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Join Date: Nov 2007
Location: Snohomish, Washington
Posts: 47
AC expansion valve insulation?

Just got my ac up and running - should be useful for three weeks or so per year in Seattle. Works great with a parallel flow condenser upgrade.

However, when I was taking things apart originally, the expansion valve was encased in some brittle, beyond-its-years foam insulation. I presume this is for some sort of temperature stability.

How important is it to replace this insulation?

What would be a good product to use?

BTW, 39.7 degrees F at the vent with R134a. OK, OK, not a warm day, but I am still happy.

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1981 300D 202K daily driver
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Old 05-20-2008, 10:45 PM
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Something like this would work:

http://www.ackits.com/merchant.mvc?Screen=PROD&Store_Code=01&Product_Code=250-292&Category_Code=
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Old 05-20-2008, 10:52 PM
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Location: Austin, TX
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Quote:
Originally Posted by Erlend View Post

What would be a good product to use?
Go to a dealer. Part number is 126 835 06 40. It's called a "housing". $5 when I bought mine 2 yrs ago.
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'82 300D Petrol B-G Metallic
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  #4  
Old 05-21-2008, 12:44 AM
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What is the benefit if having the expansion valve insulted vs no insulation?
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'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
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'85 300TD 235K "The Wagon" Texas Friendly White
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'80 240D 230K "The Squash"
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Old 05-21-2008, 12:49 AM
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Quote:
Originally Posted by JimmyL View Post
What is the benefit if having the expansion valve insulted vs no insulation?
Sweat won't drip on the floor.

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