Patent ID: 9657874
Date: 2017-05-23
CPC Classifications: F16L

Claim:
1. A coupling system for interconnecting a tube to a valve body, comprising: a valve body having a body portion and a nipple extending from the body portion, the nipple having a threaded external surface and an internal wall defining a bore; an elongated adapter having a first end and a second end opposite the first end, the adapter defining a passageway extending from the first end to the second end, wherein the first end of the adapter is received in the bore of the nipple, the second end of the adapter is configured to couple to the tube, and the adapter includes a recess that extends inwardly from an outer surface of the first end; a nut defining a hole through which the first end of the adapter passes, the nut having an internally threaded surface configured to engage the threaded external surface of the nipple; and a compression fitting seated in the recess and having a first portion and a second portion, wherein the first portion contacts the adapter and the nut, the second portion does not extend beyond the outer surface and contacts the adapter, and the compression fitting inhibits removal of the adapter from the valve body with the nut tightened on the nipple.