High pressure check valve

Details High pressure check valve High pressure check valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 25/04 (2006.01) F04B 53/10 (2006.01) F16K 1/42 (2006.01) F16K 15/02 (2006.01)

Patent

CA 2508050

A check valve for use in a high-pressure pump is provided with a check valve seat (16) having a frustoconical end region (23) that engages a tapered surface (25) provided on an outlet adaptor (18). By providing a conical interface between the check valve seat (16) and the outlet adaptor (18), a compressive stress is placed on the valve seat (16), thereby dramatically increasing the fatigue life of the check valve.

Selon l'invention, un clapet anti-retour destiné à équiper une pompe haute pression comprend un siège (16) de clapet anti-retour présentant une zone d'extrémité tronconique (25) qui entre en prise avec une surface conique (33) ménagée sur un adaptateur de sortie (18). L'interface conique mise en place entre le siège du clapet anti-retour (16) et l'adaptateur de sortie (18) exerce une contrainte de compression sur le siège (16) du clapet anti-retour, ce qui augmente considérablement la résistance à la fatigue du clapet anti-retour.

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