| 主权项 |
1. A fitting for a heat pump having at least one heat exchanger, the fitting comprising:
a first fitting element configured for connection with a tubing portion of the heat exchanger, the first fitting element having a head portion, a threaded body portion, and a first orifice extending through the head portion and the threaded body portion; a second fitting element removably connectable to the first fitting element and configured for connection with a tubing portion of the heat exchanger; a nut having a central opening, the nut being configured for threadably connecting to the threaded body portion of the first fitting element; and a non-conductive element disposed between at least a portion of the first fitting element and at least a portion of the second fitting element such that, when connected, the non-conducting element deforms between the first fitting element and the second fitting element to electrically isolate the second fitting element from the first fitting element, wherein the second fitting element has a radially extending flange received within the central opening of the nut, such that the non-conductive element is disposed radially between the flange and the nut and axially between the flange and the first fitting element, and wherein the non-conductive element has a radially-deflectable portion that deflects radially inward relative to a body portion of the non-conductive element upon direct contact with a radiused guiding surface of the nut as the nut is tightened, the non-conductive element defining an electrical isolation clearance barrier that interrupts an electrical path between the first fitting element and the second fitting element. |
