Union lock nut for pipe sealed connection - has part threaded bore and circumferential groove for engagement with special tool, used to rotate and move lock nut axially along thread of fixed connection to loosen or tighten nut

摘要

The lock nut body (101) is hollow with a part threaded (1a) bore and an annular seat (1b) for seal rings, teeth (2) formed on the external surface of the body and an external engagement groove (103) for a special tool (104) used to tighten or loosen the nut. The external teeth allow the nut to be rotated and moved axially along the thread of the fixed connection by engagement with the power tool.