F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
172/22
F16K 7/12 (2006.01) D21F 1/06 (2006.01) F16L 55/04 (2006.01) F16L 55/052 (2006.01)
Patent
CA 1252394
ABSTRACT OF THE DISCLOSURE A three-way valve for use in a fluid pulsation attenuator having a flexible diaphragm forming an interface with a flow of pulsating fluid on one side and a chamber of pressurized air on the other. The valve includes a head and an attached sliding tube having a plurality of orifices through its wall. As the head follows movement of the diaphragm, the sliding tube moves between positions which permit one or more orifices to communicate with chambers in the valve to either introduce additional pressurized air into the air chamber portion of the attenuator, or to discharge air therefrom, as needed, to quickly achieve matching, at start-up, and the continuance of matching of the air chamber pressure to the running-average pressure of the fluid on the other side of the diaphragm, and thus to keep the diaphragm's average position approxi- mately centered within its range of movement, ready to absorb pulses of either sign.
507628
Metso Paper Inc.
Mitsubishi Heavy Industries Ltd.
Ridout & Maybee Llp
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