Spherical automatic flow emergency restrictor valve

摘要

A ball check valve controls the flow of fluid with a sphere. A body has a fluid path and a recess for receiving the sphere in alignment with the fluid path. The sphere has a retainer which secures a ball check within it. When the valve is in a “Run” position and the rate of fluid flow increases, the ball check seats in a narrow opening of the sphere, thus blocking the flow of fluid.

主权项

1. A ball check valve for controlling the excess flow of fluid, comprising:
a sphere with a flow passage through the sphere, a ball check contained entirely within the flow passage; a body having a fluid path and a recess in the body receiving the sphere such that it is aligned with the fluid path of the body; and a rotating stem mated to the sphere through the body of the valve and oriented to rotate the sphere in conjunction with the stem about a rotational center, a mating connection between the end of the stem and the sphere having only a single tab on the stem sized to fit only a single slot on a top of the sphere and, the single tab of the stem and the single slot on the top of the sphere being offset from the rotational center of the stem.