Media control valve with pressure balance loop

Details Media control valve with pressure balance loop Media control valve with pressure balance loop

2007-02-12

2009-06-23

Morgan, Eileen P. (Department: 3723)

Abrading

Machine

Sandblast

C451S099000, C251S063000, C251S121000, C251S224000

Reexamination Certificate

active

07549911

ABSTRACT:
A media control valve includes a valve body having a media inlet and a media outlet with the valve body being adapted to be mounted on a flow device for providing communication between the media outlet and the flow device. A pressure balance flow line is provided in communication with the valve body and also with the flow device at a point upstream of the media outlet for balancing the pressure in the valve. A check valve may be included in the balance flow line for assuring that flow generally flows from the flow device to the valve body. A cleanout port may be provided for permitting clean out of the valve without disassembly when not in use.

REFERENCES:
patent: 5401205 (1995-03-01), Shank, Jr.
patent: 5407379 (1995-04-01), Shank et al.
patent: 5412910 (1995-05-01), Woodson et al.
patent: 6425804 (2002-07-01), Pettit et al.
patent: 7300336 (2007-11-01), Nguyen et al.
patent: 2002/0052175 (2002-05-01), Pettit et al.
patent: 2005/0242310 (2005-11-01), Takiguchi et al.

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