Importance

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Abstract

There is provided a means for mounting a check valve into a housing including fluid passages therein that can secure a closing property between a valve body and a valve seat by preventing the deformation of the valve seat, can prevent the rattling of the check valve relative to the housing including fluid passages therein and can ensure the flow rate of fluid necessary at the time of start-up. The check valve 10 and a wave washer 54 are put into a housing space 52 of the housing 46 including fluid passages therein, so that the separation of the check valve 10 and the wave washer 54 from the housing space 52 is prevented by retaining means 58 and 62. When the check valve 10 and the wave washer 54 are mounted into the housing space 52, a repulsive force is caused in the wave washer 54. Vibration caused by the operation of the check valve 10 is absorbed by the wave washer 54, and an impact applied to the valve seat 24 is reduced and rattling occurring between the housing 46 and the check valve 10 can be prevented.

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First Claim