Packing nut for control valve

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 41/02 (2006.01)

Patent

CA 2619400

A packing nut assembly for a control valve having a valve body and a valve stem includes a packing box (40) arranged for operative coupling to the valve body and having a primary bore (66) sized to receive the valve stem (38) and first and second counterbores. The first counterbore (68) is sized to receive valve packing (70) and the second counterbore (64) includes internal threads. A packing nut (42) having a central bore is sized to receive the valve stem and includes a threaded outer surface positioned to engage the second counterbore of the packing box. The packing nut includes an adjustment surface positioned to face the first counterbore, and includes an adjustment head having a plurality of tool-receiving apertures sized to receive an adjustment tool.

Écrou de presse-garniture pour soupape de commande ayant un corps de soupape et une tige de soupape. L~écrou ci-décrit comprend un presse-garniture (40) agencé pour effectuer un accouplement opérationnel avec le corps de soupape et possède un alésage primaire (66) dimensionné pour recevoir la tige de soupape (38) ainsi qu~un premier et un deuxième contre-alésages. Le premier contre-alésage (68) est dimensionné pour recevoir la garniture de soupape (70) et le deuxième contre-alésage (64) comprend des filetages internes. Un écrou de presse-garniture (42) ayant un alésage central est dimensionné pour recevoir la tige de soupape et comprend une surface externe filetée positionnée pour venir en prise avec le deuxième contre-alésage du presse-garniture. L~écrou de presse-garniture ci-décrit comprend une surface de réglage positionnée pour être face au premier contre-alésage, et comprend une tête de réglage ayant une pluralité d~ouvertures réceptrices d~outil pour recevoir un outil de réglage.

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