Hi All,

Please help me get this thing cleared.

We installed a TXV (Sporlan) for our 38AP/39HQ Carrier system.

There was a decision to cut the 1/4" equalizing line of the TXV and re-install with a flare connection. The decision was based from concerns on the test by which the liquid line and suction line will be simultaneously tested (300 and 550 psig respectively - isolated by valves). The line will be separated (from the flared coupling) and plugged to make sure (unfounded) that the valve will not be compensated from differing pressure of the low side and high side under simultaneous test.

I need professional info on whether this is sensible thing to do. Will there be problem (aside from the flared connection coming loose from vibration in the long term) because this is the first time that i installed a TXV with such connection. Normally as it is fixed I've tested systems not needing to isolate this equalizing line.

Your valued wisdom will be much help to me in explaining this to our client.

TIA

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