A stop check valve is a combination of a lift check valve and a globe valve. It has a stem which, when closed, prevents the disk from coming off the seat and provides a tight seal shutoff which is similar to a globe valve. When the stem is opened, the stem allows the lift check to operate freely. The stem is not directly connected to the disk. Rather, it acts as a guide for the disk to lift up on when the stem is open or pushes the disk into the seat to fully shut the valve when it is closed.
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This work by Piping-Designer, LLC is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
This work by Piping-Designer, LLC is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.