Method and cartridge seal for packing a valve

Details Method and cartridge seal for packing a valve Method and cartridge seal for packing a valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 41/14 (2006.01) F16K 41/02 (2006.01)

Patent

CA 2178695

A packing system, for providing a seal around a valve stem, including a packing cartridge and a bushing. The packing cartridge includes a sleeve which has a tapered central passage. The sleeve also has external male threads and a hex head. Packing material is attached to the tapered central passage of the sleeve using an adhesive. The sleeve together with the packing material form the packing cartridge. The bushing also has a tapered central passage. The packing of the present invention is applied by sliding the bushing around the valve stem, and then sliding the packing cartridge around the valve stem. Once the bushing is seated in the stuffing-box of the valve, the sleeve is tightened down into the stuffing-box, thus squeezing the packing material and creating a seal around the valve stem.

Système de bourrage pour assurer l'étanchéité autour d'une queue de soupape, comprenant une cartouche de bourrage et un raccordement conique. La cartouche de bourrage comporte un manchon doté d'un passage central conique, d'un filetage extérieur et d'une tête hexagonale. Le bourrage est fixé dans le passage central du manchon à l'aide d'un adhésif. Le manchon et le bourrage constituent la cartouche de bourrage. Le raccordement conique comprend également un passage central conique. Pour appliquer le bourrage, il suffit de faire glisser le raccordement conique autour de la queue de la soupape et, ensuite, de faire glisser la cartouche de bourrage autour de la queue. Une fois que le raccordement conique est en place dans la boîte à bourrage de la soupape, le manchon est vissé dans la boîte à bourrage, ce qui entraîne la compression du bourrage et la formation d'un joint d'étanchéité autour de la queue de soupape.

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