Ball valve with anti-rotational pressure plate

摘要

A ball valve having an anti-rotational pressure plate that allows for a balanced pressure load on a valve member is provided. Additionally, the pressure plate can also fix the rotation of an adjacent flow disk, allowing for angular-orientation specific flow characterizing features to be used with the flow disk. By fixing the rotation of the flow disk, the ball valve can characterize flows using a greater variety of flow disk geometries, including angular-orientation dependent and angular-orientation independent flow disks. Further, the pressure plate could also be directly in the form of a flow disk that has anti-rotation features.

主权项

1. A ball valve, comprising:
a valve body having a plurality of ports and a valve chamber therebetween, the plurality of ports and the valve chamber defining a fluid flow passage between the ports, wherein at least two of the plurality of ports are arranged along an first axis, and at least one of the plurality of ports is arranged along a second axis at a non-zero angle to the first axis; a valve member disposed within the valve chamber and defining a flow aperture therethrough, the valve member selectively rotatable within the valve chamber to adjust flow along the fluid flow passage by adjusting the orientation of the flow aperture relative to the plurality of ports; a first and a second dynamic seal carried by the valve body, wherein the first dynamic seal is biased against the valve member along the first axis, and the second dynamic seal is biased against the valve member along the second axis; and a fixed seal arranged along the first axis and in opposed spaced relation to the first dynamic seal, wherein the fixed seal fixes the location of the valve member in a first direction along the first axis and a second direction along the second axis.