Check valve

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

Patent

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Details

F16K 24/02 (2006.01) F04B 49/03 (2006.01) F04B 49/035 (2006.01) F16K 15/02 (2006.01) F16K 21/02 (2006.01) F16K 21/10 (2006.01) F16K 31/122 (2006.01)

Patent

CA 2492697

A check valve (20) with a body (22) and a hole (30) extending from an inlet (24) to an outlet (26). A piston assembly (52), mounted in the body (22), includes a piston (54), a check valve seal (60) and a piston spring (55). The piston spring (55) biases the piston (54) to a first location preventing air from flowing from the inlet end (24) toward the outlet end (26). The check valve seal (60) is positioned to seal against a check valve seat (37). Movement of the piston (54) removes the check valve seal (60) from the check valve seat (37), allowing air to flow from the inlet end (24) toward the outlet end (26). A tapered portion (64) of the hole (30) permits usage with systems having different volume output levels. A dampener (31) reduces fluctuations of the piston (54) caused by cyclical fluctuations in fluids controlled.

L'invention concerne un clapet anti-retour (20) comprenant un corps (22) et un orifice (30) s'étendant d'une entrée (24) jusqu'à une sortie (26). Un assemblage de piston (52), monté dans le corps (22), comprend un piston (54), un joint de clapet (60) et un ressort de piston (55). Le ressort de piston (55) sollicite le piston (54) vers un premier emplacement empêchant l'air de passer de l'entrée (24) vers la sortie (26). Le joint de clapet (60) est positionné contre un siège de clapet (37) afin de le rendre étanche. Le déplacement du piston (54) enlève le joint de clapet (60) du siège du clapet (37), ce qui permet à l'air de passer de l'entrée (24) vers la sortie (26). Une portion conique (64) de l'orifice (30) permet d'utiliser des systèmes avec différents niveaux de sortie. Un amortisseur (31) réduit les fluctuations du piston (54) provoquées par des fluctuations cycliques des fluides régulés.

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