| 摘要 |
A trigger valve which closes a main valve after a predetermined volume of fluid passes therethrough is equipped with a conversion mechanism arranged in the flow path of the fluid and functioning to translate the amount of fluid flowing through into a proportional amount of motion. A cam mechanism is turned by the conversion mechanism. The trigger valve closes the valve disk automatically due to the function of the cam mechanism when the fluid has flowed in a pre-determined quantity. Examples demonstrate the ability to control the valve means to increase or decrease a pre-determined standard flow of fluid at will by manipulations of a control mechanism.
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