Coupling for tubular structural framework - providing for fluid flow or passage of electrical cables

摘要

The bolt (2) is inserted in the pipe end (5) before this is connected to the pipe (6). The locking bolt (4) is screwed into the hole (9) in the ring (3) until its plain portion protrudes into the slot (7) in the long bolt. This is then screwed into the hollow spherical block (1) by turning the ring with a spanner. The locking bolt (4) prevents the long bolt from falling back into the pipe. Seals (8) are placed between the ring and spherical block and between the ring and pipe end. The hole is also sealed.