F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 43/00 (2006.01) F16K 3/30 (2006.01) F16K 41/02 (2006.01)
Patent
CA 2236916
The maintenance method is for a gate valve. The method comprises the steps of closing the gate valve; removing sequentially the hand wheel, the gland flange, the gland and the packing from the stem of the gate valve; mounting a first clamp onto the gate valve to keep the disc of the valve in an obturating position; untying the packing box and sliding it at least partially along the stem. The method further comprises the steps of removing the packing ring from the shouldering of the stem; mounting a second clamp onto the gate valve to keep the disc in the obturating position; removing the first clamp from the stem; sliding and removing the packing box and the packing ring from the stem; inserting a new packing ring along the stem; putting back the packing box along the stem; mounting again the first clamp onto the gate valve; removing the second clamp from the shouldering; and positioning the new packing ring onto the shouldering of the stem.
Cette invention concerne un procédé d'entretien de robinet-vanne, comportant les étapes suivantes : fermer le robinet-vanne; déposer, dans l'ordre, le volant, l'obturateur de la boîte à garniture, le fouloir et la garniture; poser un premier dispositif de serrage pour maintenir le disque du robinet-vanne en position de fermeture; desserrer la boîte à garniture et la faire glisser sur au moins une partie de la tige; enlever la garniture; poser un deuxième dispositif de serrage pour maintenir le disque du robinet-vanne en position de fermeture; enlever le premier dispositif de serrage; faire glisser la boîte à garniture et la garniture sur la tige pour les enlever; remettre une garniture neuve sur la tige; remettre la boîte à garniture en place sur la tige; poser de nouveau le premier dispositif de serrage; enlever le deuxième dispositif de serrage; mettre la garniture neuve bien en place sur la tige.
Hydro-Quebec
Robic
LandOfFree
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