Valves and valve actuation – With material guide or restrictor
Reexamination Certificate
2005-06-28
2005-06-28
Bastianelli, John (Department: 3754)
Valves and valve actuation
With material guide or restrictor
C251S315010
Reexamination Certificate
active
06910673
ABSTRACT:
A valve with a calibrated flow orifice insert for use in Heating, Ventilation, and Air Conditioning (“HVAC”) applications so as to provide metered flow through the valve. The insert is used as a flow control device and is inserted into a conventional threaded ball valve. The insert has a cylindrical axial bore that is sized to provide a maximum valve flow coefficient. Peripheral threads on the insert mate with interior threads on the inlet of the valve body. A pair of bores on the face of the insert permit threaded insertion into the valve. The axial orifice bore through the insert is sized using experimentally-determined formulas related to the Reynolds numbers for the orifice and for the piping upstream of the insert.
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Green James W.
Rouss Gino James
Bastianelli John
Valve Teck, Inc.
Walker, McKenzie & Walker P.C.
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