| 摘要 |
Abstract A gate valve liner (10) comprising a chest portion (30) and a ring portion (32) 5 adjacent a first side of the chest portion (30). The ring portion (32) comprises a cylindrical wall (42), an inner surface of which defines an opening (46) alignable with a bore in a gate valve (12). An inner surface of the cylindrical wall (42) includes a groove (48) for receiving a rounded end (23) of a gate (22) and the depth of the groove (48) decreases towards a point on a second 10 side of the ring portion (32) opposite the chest portion (30). |
