Abstract: A manway assembly (10) designed for mounting within an opening (19) in a vessel wall (20) is provided which includes a manway ring (12) having a passageway (24) therethrough, with an inner cover (14) and a cover lock (18). The cover (14) is supported by a swing mount (16) including a tubular member (42), an arm (44) telescopically received within member (42), and a suspension connector (48). The lock (18) is made up of studs (38) secured to cover (14) and extending through passageway (22), with an annular locking plate (50) having bores (54) for receiving the studs (38); nuts (64) complete the locking arrangement.

Abstract: A manway assembly (10) designed for mounting within an opening (19) in a vessel wall (20) is provided which includes a manway ring (12) having a passageway (24) therethrough, with an inner cover (14) and a cover lock (18). The cover (14) is supported by a swing mount (16) including a tubular member (42), an arm (44) telescopically received within member (42), and a suspension connector (48). The lock (18) is made up of studs (38) secured to cover (14) and extending through passageway (22), with an annular locking plate (50) having bores (54) for receiving the studs (38); nuts (64) complete the locking arrangement.

Abstract: A pipeline pig bypassing assembly is provided which remvoes a pipe pig from a pipeline system and which reintroduces a pig into the system when a second pig enters the assembly. Preferably, the bypassing assembly includes a tubular receiving means connected between two pipes of a pipeline system, a diverter for diverting a pig moving through a first pipe into the assembly, and releasing means for retaining a pipe pig in the receiver and for releasing the pig into a second pipe when a second pig enters the assembly. The receiving means sealingly engages a pipe pig therein to prevent passage therethrough of the material being transported by the pipeline system.