Abstract: An energy saving push button faucet for delivering a predetermined volume of water in a set period of time includes a control valve with a movable plunger having a front face and a rear face, the front face of the plunger is normally retained upon a valve seat shutting off flow through the valve in the faucet by supply line pressure on the rear face. The valve also includes a pilot valve which can be actuated by a push button to relieve the pressure on the rear face and permit supply line pressure on the front face to move the plunger off the seat and open the valve. The nose of the plunger is provided with an internal passage containing a flow control mechanism which reduces the effective diameter of the passage to control the volume of water delivered by the faucet. The valve also includes an adjustable timing mechanism which determines the timing cycle or length of time the valve remains open.

Abstract: A hydraulic distribution manifold used to effect coupling of various hydraulic circuits and which includes at least one slidable valve spool whose movement is controlled by means of a crank mechanism operatively connected to a cam supported within the manifold and having at least two working surfaces for controlling movement of associated linkage.

Abstract: In a flush valve having a housing, a movable partition sealingly engaging the housing and defining a primary chamber and a control chamber, an inlet port in the primary chamber and an outlet port in the primary chamber, a valve element connected with the partition for closing the outlet port, an actuator mechanism including an actuator valve for venting the control chamber, and an actuator member for operating the actuator valve, the improvement including a flow control mechanism including an auxiliary chamber communicating with the control chamber through the actuator valve; a flow regulating outlet communicating with the outlet port and the auxiliary chamber for discharging fluid vented through the actuator valve; a flow regulating inlet in the auxiliary chamber for conducting into the auxiliary chamber, when the flush valve is open and the valve element is separated from the outlet port, a portion of the fluid passing from the inlet port to the outlet port; and a unidirectional flow regulator valve for per

Abstract: An electromagnetic pilot type valve having at least one auxiliary pilot valve disposed and operatively connected between the pilot valve and the main valve. The auxiliary valve is operated in response to the pilot valve to operate the main valve. With this construction a main valve body of a relatively large diameter can be operated with a small electromagnetic pilot valve, so that the whole construction of the valve can be compactly made.

Abstract: A high pressure adjustable nozzle utilizes a vented piston valve in cooperation with a low torque hand adjusting cam element and control pin to easily open and close the nozzle orifice. Fluidic line pressure is applied to the fore and aft section of the piston valve to create forces which can adjustably regulate the flow of the nozzle from an infinitely variable full open valve position to a full closed valve position.

Abstract: A scavenging air valve for cleaning at least one tubular filter body is disclosed. The air valve has a laminar valve body, one side of which forms, by means of its inner portion, the shutoff for the inlet of a scavenging air line. Its edge zones of said one side face toward a scavenging air chamber. The valve body is movable perpendicular to the side mentioned, inside of a maintaining chamber, under the effect of the scavenging air. The maintaining chamber is, on the one hand, in constant communication with the scavenging air chamber over at least one throttling point and, on the other hand, is connected to a blockable exhaust air line through means of a control valve.

Abstract: A valve assembly is provided in which a first poppet member and at least one subsequent poppet member each having a valve face engageable with a valve seat between first and second passages. A first and a subsequent pilot valve is operative for selectively establishing communication between a fluid reservoir and a space at one side of a piston portion of each poppet member and a pair of restricted flow passages are provided in each poppet member between such space and the first and second passages, such restricted flow passages being preferably formed in the poppet members with ball check valves provided therein. Such restricted flow passages operate upon closure of the pilot valve to develop a static pressure in the space corresponding to the pressure in the one of the first and second passage which has the higher pressure therein so as to move the poppet member to and hold it in its closed position in response to pressures applied from either of the first and second passages.

Abstract: A servo-controlled valve is described, in which a circular flexible diaphragm is inserted in a cylindrical chamber wherein the pressure can be varied in order to move the center part of the diaphragm towards and away from a valve seat. The diaphragm is loosely inserted in the chamber and has a peripheral flange fitting to the cylindrical wall of the chamber. The chamber is closed by a closure member which, when removed, allows the introduction of the diaphragm into the pressure chamber. The closure member is by means of threads screwed onto a sleeve-like projection upon the valve housing wider than the diaphragm. A central inward projection upon the closure member forms a stop delimiting the opening motion of the diaphragm. Said stop is displaceable by manually turning the closure member. A valve and a push button both situated centrally in the closure member control the pressure of the chamber.

Abstract: A remote actuated metering valve system for supplying water to a washing fixture includes a main metering valve and at least one remote actuating relief valve connected to the main valve by tubing. The main metering valve has an inlet and an outlet with a valve seat between them and a movable piston which when the valve is in the normal closed position has its front face seated on the valve seat and its elongated nose projecting through the valve seat. The piston is maintained in the closed position by supply line pressure which is transferred via a bypass timing circuit to a pressure chamber behind the piston where it is sensed by the rear face of the piston. The pressure chamber of the main valve is connected by tubing to a normally closed remote push button relief valve. A second length of tubing leads from the relief valve to the supply source at a point downstream of the valve seat.

Abstract: A conveyor system comprises a conveyor drivable at variable speeds by a hydraulic motor which is controlled by a cam regulated flow control valve. Sensing means responsive to some condition on the conveyor requiring a change in speed (i.e., excessive accumulation of conveyed articles requiring conveyor slow-down) are connected to the cam on the flow control valve to effect a corresponding change in conveyor speed. The valve amplifies the relatively small fluid control signal therewithin to effect control of relatively high pressure fluid.

Abstract: A low pressure shutoff valve adapted to be interposed in the fluid supply conduit of a fluid operated torque tool comprises a piston closure member having opposed differential pressure faces exposed to fluid supply pressure and a coil spring for biasing the piston toward a fluid shutoff position. The piston is disposed in a chamber which may be vented by actuating an axially slidable sleeve on the exterior of the valve body whereby the valve is opened to supply pressure fluid to the tool as long as the fluid pressure is greater than a predetermined minimum value.

Abstract: A timed metering valve includes a valve body having an inlet and an outlet which are connected by a passageway surrounded by a valve seat at its upper periphery; a cylinder; a movable piston having a front face and a rear face positioned in said cylinder, the front face of said piston normally being seated upon the valve seat preventing the flow of fluid through said passageway; a bypass circuit leading from the inlet through a timing mechanism to a pressure chamber behind the rear face of the piston so that supply line pressure sensed by the rear face of the piston maintains the valve in the closed position; and relief valve means for relieving the pressure in said pressure chamber so that the supply line pressure can move the front face of the piston off its seat to open the valve.

Abstract: A shutoff valve for high and maximum pressures comprises a housing with an inlet passage communicating with a discharge passage and having a valve seat therebetween which is closable by a differential piston having one face which is seatable on the valve and an opposite face in a first control chamber. The first control chamber is connectable through a first control valve to a bypass which extends to the discharge passage. In addition a second control chamber is located in the bypass passage and it is regulated by a separate second control valve. A separate control member such as a pivotal lever is associated with each control valve and each must be separately operable in order to permit movement of the differential piston off the valve seat to open the flow passage.

Abstract: A shutoff valve in a line containing fluid under pressure which after being closed is held closed by another fluid under pressure. The other fluid is one such as air which is available at the valve.

Abstract: A free floating disc valve having a positive closure arrangement thereon. A containment vessel enclosing a volume communicable with a pressure chamber is disposed above the valve disc and permits introduction into the pressure chamber of a high pressure fluid entrapped within the containment volume to provide a force to assist the seating of the valve disc.

Abstract: A shutoff-valve, for high and highest pressures (i.e. pressure in the range of hundreds to thousands of kp/cm.sup.2) especially for a high-pressure spray gun, has a common pressure chamber for a differential piston driven by the pressure medium (e.g. liquid or gas) and a control piston of either ball-, cone-. cylinder-, plate-, or similar shape. The control piston cooperates with a control pin displaced by an operating lever. The shutoff-valve, working on a largely hydraulic basis by creating underpressure, is brought into closing position by means of a bypass channel for controlled flow of the medium and is opened by displacement of the operating lever.

Abstract: A hydraulic servo valve assembly and a control system therefor employing a pneumatic sensor-actuator are disclosed. The servo valve assembly comprises a servo-operated power valve assembly including a differential piston, a solenoid operated override and hysteresis adjustment. The valve assembly is a "snap-action" device wherein the power valve differential piston is selectively positioned through use of the pneumatic sensor controlled servo valve to vent the pressure applied to the larger area reaction surface of the piston.

Abstract: A temperature controlled regulator in which valved air inlets communicated with air pressure sources at different temperatures control the flow of air into a mixing chamber to maintain the outlet temperature of the mixture within specified limits, said regulator being characterized in that the valve actuator has first and second chambers on opposite sides thereof respectively exposed to the pressure of the mixture and to a reduced air pressure between the downstream side of a variable area orifice controlled by a temperature sensor in the regulator outlet and the upstream side of a variable area pressure control or bleed orifice, the first-mentioned variable area orifice being decreased or increased in size by decrease or increase of the mixture temperature with reference to said specified value thus to vary the pressure in said second chamber in relation to the pressure acting in said first chamber to inversely vary the air flow through said inlets thus to maintain a specified temperature of the mixture.

Abstract: A two stage solenoid actuated valve and method of actuation within a predetermined time interval. The valve provides fluid flow having a predetermined flow profile for displacement of a mass through a particular distance with a minimization of shock applied to the mass. The valve has a first and second stage in fluid communication each with the other. The first stage includes a solenoid valve and associated plug member for opening or closing flow through the first stage. The second stage includes a plug member having a predetermined contour head insertable within an orifice whose movement is responsive to the flow state of the first stage.

Abstract: A servo-pressure operated piston arrangement includes a pilot valve which is movable by a torque motor against a biasing spring. A closed chamber is defined between one end of the piston and its surrounding cylinder, and this chamber communicates with an orifice which is shut by the pilot valve, under control of the biasing spring, to lock the piston relative to the cylinder if the torque motor fails.

Abstract: An electromagnetically operated fluid control valve having an armature mounted within the valve housing and a coil assembly mounted outside of the housing. Actuation of the coil assembly causes the armature to shift away from a valve port, thereby allowing fluid flow through the port. The armature is mounted on the housing by means of a torsion bar which permits fluid flow to be proportional to the input signal to the coil assembly and minimizes hysteresis. The coil assembly includes a permanent magnet and also a pair of pole pieces. Pole extensions are sealed in the housing wall in alignment with the pole pieces and adjacent to the armature. Thus, the coil assembly is not subject to corrosion or contamination from fluid passing through the valve.