| 摘要 |
It comprises a guide system formed by a quadrangular plate, with a central hole, on two of whose edges fit, with the possibility of displacement, the vertical walls of a box which also comprises another central hole, there being, between both pieces, a plate of smaller perimetral dimensions than the space defined by the box, provided with a vertical neck which is housed in the hole in the aforesaid box for receiving, by means of screwing, a plug, which is perforated axially, which has, together with the plate, the possibility of universal movement in the plane it occupies in order to centre the pull rod which passes via the hole of the plug with respect to the valve element. The guide assembly is supported by two extendible columns integral with a ring which is fixed in bayonet fashion onto the valve body. <IMAGE>
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