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Old 07-10-2014, 12:43 PM   #1
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1987 32.5' Airstream 325
dripping springs , Texas
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Dash A/C challenging question

Ok guys, rebuilding/converting the A/C and found this valve on the low pressure side of the drier going back to the compressor. Can anyone tell me what it is and is it necessary for a 134a system? ThanksClick image for larger version

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Old 07-10-2014, 01:20 PM   #2
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1974 20' Argosy 20
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Other than being some sort of back flow preventer I haven't got a clue.

Sorry, not much help.

Brad
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Old 07-10-2014, 01:39 PM   #3
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1987 32.5' Airstream 325
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Follow up: talked to Austin Rebuilders (the local AC experts) and they said its a check valve that they omit, as they are no longer available. They also said its a great place for the system to leak. FYI....
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