Vent or bleed valves can be used on instrumenttion devices such as multivalve manifolds or gauge/root valves to vent single line pressure to atmosphere before removal of an instrument or to assist in calibration of control devices. Compact for convenient installaion. Male npt & sae end connection.
Tesing :

Every vent or bleed valve is factory tested with nitrogen at 1000 psig.

Seats have a maximum allowable leak rate of 0.1 std . Cc/min.

Shell testing is performed to a requrement of on detactable leakage with a liquid leak detector.