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Gas pressure-reducing valve 2011-12-26
A gas pressure-reducing valve in which a valve member to be seated on a valve seat having a valve hole opened at its central portion and leading to a pressure-reducing chamber between a body and a dia
Pilot Valve For A Pressure Reducing Valve 2011-12-23
A pilot valve for controlling operation of a fluid-actuated pressure reducing valve, the pilot valve including: a housing, a first valve member and a second valve member whose relative positions contr
Piezoelectric pressure control valve 2011-12-22
A pressure control valve having a common plenum formed by two flow control valves that each utilize electrically controlled piezoelectric actuators to generate a number of possible operating states an
Quiet high pressure reducing valve 2011-12-21
A pressure reducing valve includes a housing having a passage therein, a valve body disposed within the passage, and a piston slideably disposed within the passage. The valve body includes a wall arra
Variable pressure reducing device 2011-12-20
The invention provides a pressure reducing valve in which a minimum pressure can be secured even when an engine speed is reduced. A pressure reducing valve changing an output pressure in correspondenc
Negative pressure control valve 2011-12-19
A negative pressure control valve for generating a negative pressure has an inlet port communicating with a negative pressure source, an outlet port communicating with a negative pressure load, a diap
ELECTRIC PRESSURE-REDUCING VALVE 2011-12-16
A pressure reducing valve comprises a valve support member provided with a water passage, a valve seat fitting on the portion of the valve support member primary side relative to the secondary side en
Pressure-actuated circulation valve 2011-12-15
A circulation valve is disclosed for use in a tubing-conveyed tool string. The valve is adapted to be open as the tool string is run into the well, enabling circulation flow from the tubing into the w
