초록 ▼

Disclosed is an improved check valve for in-line mounting with fluid conduits under pressure subject to directional flow control of the type comprising two components of simple configuration, the improvement including a tee shaped movable short valving pin with a seal secured adjacent pin head over

Disclosed is an improved check valve for in-line mounting with fluid conduits under pressure subject to directional flow control of the type comprising two components of simple configuration, the improvement including a tee shaped movable short valving pin with a seal secured adjacent pin head over a shank thereof inserted inside a small divider bore portion central to a housing bore with larger diameter end sections and adaptable to fluid flow control therebetween from a first direction by closing the fluid flow passages when the seal is forced against a first side of the divider wall inside a first bore section rendering valve bubble-tight shut until the directions of fluid changes shifting the pin with the seal axially away from the divider as far as the tee permits before abutting a second side of the divider wall inside a second bore section so as to render valve fully open, and vice-versa, including novel means for pin assembly and holding physically inside the housing bore by an elastomeric seal inserted over the pin shank through the opening of the first bore section while the tee remains inside the second bore section during the initial valve assembly.

대표청구항 ▼

A simplified two component springless check valve comprising: an elongated valve housing with a bore passing therethrough between a first and a second valve housing ends and provided with two opposing centrally divided interconnecting larger diameter bore-end-sections of equidistant length from said

A simplified two component springless check valve comprising: an elongated valve housing with a bore passing therethrough between a first and a second valve housing ends and provided with two opposing centrally divided interconnecting larger diameter bore-end-sections of equidistant length from said first and second housing ends towards a central wall provided with a coaxial reduced diameter interconnecting short bore portion in communication with said end sections for fluid flow therethrough when said valve is connected into a line of fluid under pressure by said first and second valve housing ends comprising fluid supply and exhaust port means respectively subject to directional flow control, a short, slightly elongated, axially movable pin inside said central bore portion having a shank of a diameter considerably smaller than the diameter of said central bore terminates at a first end thereof with a short round head of considerably larger diameter than said shank but smaller than the diameter of said central bore in order to pass therethrough during the initial assembly of the valve, while a second end thereof of tee configuration is flattened and provided with a tee of a size considerably larger than the diameter of said central bore in order not to pass therethrough during valve operation but smaller than the diameter of said bore-end-sections to facilitate free pin movement axially therein when subjected to pressure of fluid passing said tee unobstructed, means for mounting said pin into the center of said bore via said central wall through a second larger diameter bore-end-section so as to secure said pin inside thereof when said pin head extends into a first larger diameter bore-end-section by a seal of a diameter larger than the diameter of said central bore for securing permanently said seal over said shank after passing said pin head adjacent a first side of said wall inside said first bore-end-section while said tee of said pin remains inside said second larger diameter bore-end-section adjacent a second side of said wall so as to permit fluid flow freely into a first direction initiating with said second larger diameter bore-end-section and continuing into said first larger diameter bore-end-section via said central bore for exhaust therefrom until the direction of fluid flow is changed into an opposite second direction whereby fluid pressure urges pin movement so as to render valve bubble-tight shut when said seal is forced against said first side of said wall axially by said fluid pressure, and vice-versa, means for holding said pin by said seal in said valve housing physically when said seal is placed over said shank during valve assembly.