A SWIVEL JOINT

摘要

A swivel joint (2) comprising a housing (4), a first pipe portion (6) for a fluid, a second pipe portion (8) for the fluid, first and second bearings (10, 12) which enable 360° relative rotation of the second pipe portion (8) with respect to the first pipe portion (6), a metal seal (14) for effecting a seal between the housing and the second pipe portion (8), a first test conduit (16) which is for testing the sealing of the swivel joint (2) and which extends through the housing (4) to a position adjacent a first side (18) of the metal seal (14), a second test conduit (20) which is for testing the swivel joint (2) and which extends through the housing (4) to a position adjacent a second side (22) of the metal seal (14), and the swivel joint (2) being such that the metal seal (14) is a pressure energiseable metal seal (14) which is energised by pressure in the swivel joint (2), the first side (18) of the metal seal (14) faces towards the first pipe portion (6), and the second side (22) of the metal seal (14) faces towards the second pipe portion (8).