1.Stop-check valves are best suited for low to moderate velocity applications. Correct sizing of stop-check valves is important. Either too low a line velocity or too high a velocity can damage valve internals and shorten valve life.

2.Service in systems involving frequent flow reversals and pulsation should be avoided. Stop-check valves should be located as far away from equipment such as pumps and compressors as possible. Suspected problem systems should be reviewed with Pacific Valves before selecting and purchasing stop-check valves.

Threaded seat rings in valves in services with high velocity (turbulent) flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.

LIMITATIONS:

1.Globe pattern stop-check valves can be used in horizontal piperuns with the stem straight up.