Variable orifice valve for airstream containing particulate...

Details Variable orifice valve for airstream containing particulate... Variable orifice valve for airstream containing particulate...

2005-08-02

2005-08-02

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

C251S122000, C110S1010CD, C110S189000, C110S263000

Reexamination Certificate

active

06923203

ABSTRACT:
A variable orifice valve for balancing the flow of particulate coal in an airstream relative to other parallel conduits. The valve comprises a section of conduit which changes in area along its flow axis and a variable position valve element mounted within the conduit section. The valve element has a shape which proximates that of the conduit section and is movable axially to vary the annular area of the flow path around the valve element. There is no valve seat and, therefore, the valve is always open to some degree.

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“Pulverized Coal Line Valves” brochure, Power & Industrial Services Corporation, cover and pp. 3-4.

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