| 摘要 |
The invention relates to pipe couplings, and is an improvement on a cast flange for such couplings housing. More particularly, the invention provides an improved flange and its seal which is attachable to the exterrlal surface of a pipe and which can be used to eliminate a small leali if access to a pipe extrelnity is available. The invention provides an end clamp housing (10) for attachment to a cylindrical body, the side end housing being a unitary metal casting comprising; an open annular base element (34) provided with a first, ingoing flange (36) at a first side of the base element and a second ingoing flange (36) at a second side of the base element. The second ingoing flange having a cross-section forming a loop (40) extending outwardly beyond the base element; and a pair of clamp members (24) projecting outwardly from the base element. The clamp members being positioned face to face and having an aperture (26) to allow the insertion of a tightening element (42) winch can be operated to reduce the distance between the two ends of the open annular base element and thereby press an annular seal element (18) against the outside of a pipe inserted through the seal clamp housing, which after release of the tightening element returns to its original dimensions. |
