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Bifold Fluidpower Limited Patents
Bifold Fluidpower Limited
Manchester, GB
No. of patents:

Patent Number Title Of Patent Date Issued
8220478 Fluid flow control apparatus July 17, 2012
A main control valve is actuated by a pilot fluid control signal between open and closed positions to supply fluid to an actuator such as a valve actuator. A stack of logic control valves is supported on the main valve- and controls the flow of the pilot signal. Each of the logic control
8205632 Fluid flow control device June 26, 2012
A fluid flow control device such as a volume booster has an inlet, an outlet and an exhaust port all for an operating fluid. A pilot inlet receives a pilot pressure signal which operates a valve stem actuator via a diaphragm assembly. The valve stem is operable to open a supply valve

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