| Re: Thermal Expansion Valve 77' & 78"? [message #364922 is a reply to message #364882] |
Wed, 23 June 2021 09:45  |
RoadWarrior
Messages: 28
Registered: April 2017
Location: Arizona
Karma:
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I am pretty sure that part number was correct in the past. It was supplied by several manufacturer's some of whom supplied a adapter fitting for the output. The correct valve would have 5/16" Oring tube connections on the inlet and outlet. The outlet connection associated with that part number is now 13/32" (larger) so it won't fit. This seems to be another case of the Chinese considilating part number in manufacturing and then putting them in different labled boxes. I know the internet is awash with complaints about returning parts that "should fit" (I currently have two valves that I am currently returning). FYI: the 77' & 78's had a externally compensated valve so they need the extra tube (which works better). The earlier coaches used a internally compensated valve.
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