公开(公告)号：US06929023B2

公开(公告)日：2005-08-16

申请号：US10213759

申请日：2002-08-07

申请人： Kane Whitaker ,  Mark Jones

发明人： Kane Whitaker ,  Mark Jones

IPC分类号： E03F7/04 ,  F16K15/06

CPC分类号： E03F7/04 ,  F16K15/063 ,  Y10T137/6086 ,  Y10T137/7504 ,  Y10T137/7854 ,  Y10T137/7931

摘要： A back flow prevention device is shown for use in a plastic pipeline for conveying water, sewage, hydrocarbons or other fluids. A valve body features a flow control mechanism which is formed entirely or primarily of plastic materials. The valve body and its opposing ends are formed of a plastic material which is compatible with the plastic material of the existing pipeline, whereby the valve body can be installed in the pipeline in co-axially fashion by directly joining the opposing ends of the body to the opposing mating pipe ends at a selected location within the pipeline.

摘要翻译： 示出了用于输送水，污水，碳氢化合物或其它流体的塑料管道中的回流防止装置。 阀体具有完全或主要由塑料材料形成的流动控制机构。 阀体及其相对的端部由与现有管道的塑料材料相容的塑料材料形成，由此阀体可以通过将主体的相对端直接连接到管道中而同时地安装在管道中 相对的配合管在管道内的选定位置处终止。