Two-stage pressure relief valve

Details Two-stage pressure relief valve Two-stage pressure relief valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/04 (2006.01) B64C 13/00 (2006.01) F04B 49/22 (2006.01) F16K 17/06 (2006.01) F16K 17/10 (2006.01)

Patent

CA 2546390

A two-stage pressure relief valve for use with hydraulic systems is disclosed. The two-stage pressure relief valve has a first stage that relieves increases in hydraulic system pressure over the normal operating pressure and up to a selected threshold pressure level, and a second stage that brings the hydraulic system pressure down to a selected reduced operating pressure that is below the normal operating pressure in response to increases in the operating pressure over the threshold pressure level.

L'invention concerne une soupape de décharge à deux étages utilisée dans des systèmes hydrauliques. Ladite soupape de décharge à deux étages comprend un premier étage qui libère des augmentations de pression dans le système hydraulique dépassant la pression de fonctionnement normale et pouvant atteindre un niveau de pression seuil sélectionné, et un second étage qui fait tomber la pression hydraulique à une pression de fonctionnement réduite sélectionnée inférieure à la pression de fonctionnement normale en réponse aux augmentation de la pression de fonctionnement dépassant le niveau de pression seuil.

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