Fluid control valve systems, fluid systems equipped therewith, and methods of using

• Main Authors: HOLLAND MICHAEL ANDREW, LUMKES JOHN H, MERRILL KYLE JOSEPH, WILFONG GABRIEL JORDAN, BATDORFF MARK ALLEN
• Format: Patent
• Language: English
• Published: 01.12.2015
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TAPS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

A fluid control valve system suitable for use in fluid systems. The valve system includes at least one check valve assembly that has a controllable bidirectional flow capability. The valve system and its check valve assembly can be installed in a fluid system that contains a pump/motor to enable the displacement output of the pump/motor to be controlled. The valve system further includes a pilot valve assembly and a device for controlling the check and pilot valve assemblies. The controlling device is adapted to control the pressure of at least one pilot fluid delivered to the pilot valve assembly, which enables the check valve assembly to selectively check flow of a working fluid flowing therethrough in either of two directions.