Of the various possible methods shown in the illustration, which is the correct method of attaching a TXV feeler bulb to a small large line (7/8" and larger) with a horizontal run? GS-RA-50

Illustration GS-RA-50: the U.S. Coast Guard has not released this illustration.

Question

Of the various possible methods shown in the illustration, which is the correct method of attaching a TXV feeler bulb to a small large line (7/8" and larger) with a horizontal run? GS-RA-50

Illustration GS-RA-50: the U.S. Coast Guard has not released this illustration.

Accepted Answer

Option A: C. On horizontal suction lines 7/8 inch and larger, the sensing bulb must be mounted on the upper shoulder of the pipe (typically at the 2 o'clock or 10 o'clock position) to prevent erratic operation caused by oil pooling at the bottom.