Flush valve

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

Patent

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Details

F16K 31/145 (2006.01) E03D 3/06 (2006.01) F16K 31/385 (2006.01)

Patent

CA 2656106

Tilting of a main valve assembly under high inlet pressure conditions is prevented by supporting the main valve assembly with housing rib engaging a skirt on the main valve guide tube. Pilot valve opening results from contact of an enlargement on the pilot valve stem with the push rod as the pilot valve begins its upward movement. An off center baffle compensates for the pressure pattern resulting from the side entry inlet. Throttling structure provided by a skirt on the guide tube cooperating with a shoulder in the outlet passage provides a desirable large flush flow. The inlet and handle openings in the valve body include bosses adjacent thereto an internal to the housing.

L'invention concerne un ensemble soupape principale dont le basculement en conditions de haute pression d'admission est empêché en soutenant l'ensemble soupape principale par des nervures du carter interagissant avec une jupe sur le tube guide de la soupape principale. L'ouverture d'une soupape de commande résulte du contact d'un renflement sur la tige de la soupape de commande avec la barre de poussée lorsque la soupape de commande entame son mouvement ascendant. Une chicane excentrée compense la répartition de pression résultant de l'admission par l'entrée latérale. Une structure d'étranglement constituée par une jupe sur le tube guide coopérant avec un épaulement dans le passage de sortie assure le fort débit de purge souhaitable. Les ouvertures d'admission et de poignée dans le corps de la soupape comprennent des bossages adjacents à celles-ci et intérieurs au carter.

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