Combined test and bleed valve fitting

Details Combined test and bleed valve fitting Combined test and bleed valve fitting

2005-05-31

2005-05-31

Bastianelli, John (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Screw

C251S325000, C137S557000, C073S756000, C073S866500

Reexamination Certificate

active

06899317

ABSTRACT:
A test port and bleed valve is combined in a unitary main body of a device. A split core test plug is positioned within a hollow valve stem. The seal at the bottom of the valve stem engages a valve seat to provide a releasable airtight seal. At the top of the valve stem, rotating the stem so that it axially moves toward and away from the valve seat to open and close the valve to bleed gas from the vessel or piping system. A bleed port is located through the sidewall of the main body of the device so that it is in fluid communication with the working medium of the vessel or piping. The top of the stem includes a removable cap and retainer to cover an aperture in the top of the stem through which a test probe can be inserted.

REFERENCES:
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patent: 6330890 (2001-12-01), Ekman
patent: 6745634 (2004-06-01), Beck et al.

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