Spring-energized check valve
    4.
    发明授权

    公开(公告)号:US10465808B2

    公开(公告)日:2019-11-05

    申请号:US16323637

    申请日:2017-08-07

    摘要: 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.