公开(公告)号：US20190186485A1

公开(公告)日：2019-06-20

申请号：US16323637

申请日：2017-08-07

Applicant: Waters Technologies Corporation

Inventor： Jeffrey MUSACCHIO ,  Joseph D. MICHIENZI ,  Keith FADGEN

IPC: F04B53/10 ,  F16K15/14 ,  G01N30/20

CPC classification number: F16K15/142 ,  F04B53/10 ,  F16J15/3212 ,  F16K15/147 ,  F16K15/148 ,  G01N30/02 ,  G01N30/20

Abstract: A check valve includes a first valve body having a chamber in which second and third valve bodies are located. The check valve also includes a spring-energized seal disposed in the chamber. The spring-energized seal includes a compliant seal body having an annular shape and a resilient member, such as a cantered spring or O-ring, disposed in a pocket of the seal body. The resilient member applies a force to portions of the seal body to prevent the passage of fluid from a valve inlet port to a valve outlet port unless the differential fluid exceeds the cracking pressure of the check valve.