| 摘要 |
The head 7-8 has a seat 11, normally closed off by a valve element 12, with delayed closure, situated at the end of a stem 10 entering the body 1 of the tap and to which there is fixed in an adjustable manner a shut off member 6. The shut off member 6 is composed of a cylinder comprising a sealing gasket 13 at one end and screwing to the stem 10 comprising the seat of the head. <IMAGE>
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