| 摘要 |
Cock (10) of the type having a body (11) in which is moulded a seat in which rotates a round solid plug (14) having a diametrical passage (19) which can be arranged in alignment with passages made in the seat for opening the cock or withdrawn from said alignment to close the cock, there being placed between the plug and the seat sealing means. Said sealing means consist of plastic gaskets moulded in a plurality of recessed (16, 17, 18) made in the outer surface of the plug. |
