Abstract: A device and method for automatically flushing hydrants. The device is installed externally to an existing hydrant. The device comprises a nipple having an internally threaded collar for attaching the device to a hydrant outlet, a valve, a control for automatically operating the valve, and a lockable box containing at least the valve, the box having an outlet for allowing water from the hydrant to pass from the valve to the exterior of the box. The box functions as an enclosure and may be of any desired configuration.

Abstract: The present invention provides a method and apparatus for supplying process liquid s for a machine tool, which are able to reduce the consumption power and power factor of the pump 21 to a large extent in comparison with prior arts while maintaining the effects of process liquid s according to prior arts. The invention is embodied so that process liquid s such as coolant or cleaning fluid is supplied to necessary points by causing the process liquid s to flow down, which is stored in a sub tank 20 installed at a suitable height in a machine tool, by a gravity action when intermittently supplying the process liquid s such as coolant or cleaning fluid to the necessary points such as a workrest 2 and a workpiece w fixed thereon; the supplied process liquid s is collected into a main tank 19 on the other hand; and the process liquid s stored in the main tank 19 is transferred into the sub tank 20 by the pump 21.

Abstract: A gas-circulating processing apparatus which comprises a processing chamber, a gas feeding piping, a gas supply piping, a first exhaust mechanism discharging a gas from the processing chamber, a second exhaust mechanism discharging a portion of a gas discharged from the first exhaust mechanism, a back pressure adjusting mechanism interposed between the first exhaust mechanism and the second exhaust mechanism to adjust a back pressure of the first exhaust mechanism, and a gas circulating piping which is configured to combine another portion of the gas that has been discharged from the first exhaust mechanism with a processing gas supplied from the gas supply piping, wherein the gas feeding piping has a larger inner diameter than that of the gas supply, or the processing gas is introduced into the first exhaust mechanism, or a first heater is provided to heat at least part of the circulating route.

Abstract: An inflatable, disposable pillow which can be conveniently carried and stowed by users in a deflated state, and used as a comfortable, clean pillow in an inflated state. The inflatable pillow includes a single folded sheet or two sheets sealed together to form side walls. A flat self-sealing valve comprising two sheets of flexible material is placed between the sidewalls. The sheet or sheets may be comprised of multiple plies, with an outermost ply being an absorbent material. Alternatively, an absorbent cover may be attached to the outermost surface of at least one side of the pillow.

Abstract: An exhaust adaptor and method which includes attachment of an exhaust bellow or conduit to a process chamber to facilitate vacuum-induced evacuation of residual toxic gases from the chamber during cleaning and/or maintenance of the chamber. A throttle valve of the chamber is first removed from a throttle valve housing, and one end of the exhaust adaptor is next attached to the throttle valve housing. An exhaust bellow or conduit is attached to the opposite end of the adaptor. As a down flow of air is directed into the open chamber, vacuum pressure is induced in the chamber interior through the exhaust bellow or conduit, the adaptor and the valve housing, respectively. Air disturbances in the chamber interior are thus eliminated, and toxic residual gases generated in the chamber interior are therefore incapable of diffusing to the exterior of the chamber.

Abstract: A shield for a plug valve is provided to prevent debris from hindering the movement of moving components of the plug valve. The shield prevents larger sized debris from accumulating at an opening in a wall in which the plug valve is mounted, the wall defining a confined space, such as the interior of a vessel, at least in part. The shield encloses but is spaced from the plug valve and a device is located within a space between the shield and the plug valve for directing a purging gas through the space to sweep away or purge smaller sized debris from the space.

Abstract: Disclosed is a control device for controlling a two-way linear solenoid valve (60) including a pressure regulating port (60p) which communicates with a hydraulic circuit side, a drain port (60d) which communicates with a drain side, a plunger (61) which controls the state of communication between the pressure regulating port and drain port, and a coil (70) which drives the plunger in accordance with an exciting current. The control device has a current generator (65) which supplies the coil with the exciting current corresponding to a duty signal; and a microcomputer (1). The microcomputer determines whether or not a preset foreign matter removal starting condition for removing foreign matter accumulated in the ports has been established.

Abstract: A fluid vent (26) for venting fluid from the annulus between the inner surface of a rigid conduit (20) and the outer surface of a conduit liner (10). The fluid vent (26) consists of a length of rigid conduit (34) containing a multiplicity of apertures (32) extending through the wall of the conduit and arranged in an annular pattern around the circumference of conduit (34). The fluid vent (26) further comprises means defining a closed annular volume (36) extending around the exterior circumference of the conduit (34) and interconnecting the outer ends of the apertures (32) with at least one fluid outlet passage (40) located on the exterior of the conduit (34) and communicating with said annular volume (36). The fluid vent can be used to expel water or other liquids from the annular space when retro-fitting a liner to a conduit, venting gas which has permeated through the lining into the annulus, or for assisting in the movement of fluid through the annulus.

Abstract: A device and method for automatically flushing hydrants. The device is installed externally to an existing hydrant. The device comprises a nipple having an internally threaded collar for attaching the device to a hydrant outlet, a valve, a control for automatically operating the valve, and a lockable box containing at least the valve, the box having an outlet for allowing water from the hydrant to pass from the valve to the exterior of the box. The box functions as an enclosure and may be of any desired configuration.

Abstract: A water flushing unit and a method of making such comprising a cover plate that is to be mountingly installed to replace the original equipment cover plate of a shower valve. The modified cover plate has a drain conduit which includes an on/off valve. The on/off valve is in turn connected to a flexible tube. Flushing water from the shower valve is to be confined and directed through the drain pipe and, with the on/off valve in an open position, is caused to flow through the drain tube.

Abstract: A fully draining valve including an upper valve portion and a lower valve portion. The lower valve body has an integral weir, which in conjunction with a resilient diaphragm, defines a fluid passage. The weir axis is sloped from a horizontal plane. A first duct axis is sloped downwardly away from the weir and sloped from the horizontal plane. A second duct axis is sloped downwardly away from the weir and sloped from the horizontal plane. A third duct axis is oriented downwardly away from the weir and substantially parallel to a vertical axis such that substantially all liquid from within the fluid passage drains from the valve by gravity.

Abstract: An exhaust adaptor and method which includes attachment of an exhaust bellow or conduit to a process chamber to facilitate vacuum-induced evacuation of residual toxic gases from the chamber during cleaning and/or maintenance of the chamber. A throttle valve of the chamber is first removed from a throttle valve housing, and one end of the exhaust adaptor is next attached to the throttle valve housing. An exhaust bellow or conduit is attached to the opposite end of the adaptor. As a down flow of air is directed into the open chamber, vacuum pressure is induced in the chamber interior through the exhaust bellow or conduit, the adaptor and the valve housing, respectively. Air disturbances in the chamber interior are thus eliminated, and toxic residual gases generated in the chamber interior are therefore incapable of diffusing to the exterior of the chamber.

Abstract: A vaporizer comprises disks each including an aperture at a central portion thereof. A hollow pipe having apertures for permitting radial outflow of a liquid extends through the aperture of each of the discs so as to form a stack of the discs. A resilient member applies a biasing force to the discs, and structure applies a force, via fluid control, against the biasing force to thereby remove the biasing force from the discs. Liquid in the hollow pipe is adapted to be delivered from the apertures to spaces between the discs and vaporized in the spaces between the discs.

Abstract: A solenoid has a cylindrical excitation coil and a plunger movable in the excitation coil and generates electromagnetic force to move the plunger when an electric current is supplied to the excitation coil. A cover for closing a side of a plunger compartment accommodating the plunger is provided with upper and lower through-holes communicatively extending through the cover from the outside of the solenoid to the plunger compartment. The uppermost part of the upper through-hole is above or level with the uppermost part of the plunger compartment. The lowermost part of the lower through-hole is below or level with the lowermost part of the plunger compartment.

Abstract: A relation between an instruction current value (is) to be given to a solenoid valve and its supply time range (t) is predetermined, and a silting prevention current instruction (is) is given to the solenoid valve according to the this relation. Then, silting can be prevented without fail even if a control current instruction is zero, and no fine vibration is caused in a hydraulic actuator when the control current instruction is being output.

Abstract: A filling valve for a pressurized fluid container, including a valve body with a longitudinal bore and a side opening formed therein, a sealing assembly slidingly disposed in the valve body, the sealing assembly being formed with a bore therethrough, a valve lever pivotally attached to a portion of the valve body, the sealing, assembly including a jutting portion which protrudes in a direction generally away from a bottom portion of the valve body, a float arm attached to the valve lever, and a float mounted on the float arm, wherein when the float is positioned at a generally obtuse angle with respect to a longitudinal axis of the valve body, the jutting portion of the sealing assembly is raised and supported by the valve lever, such that the sealing assembly is raised and does not block the side opening thereby permitting fluid flow through the side opening, and wherein when the float is sufficiently buoyed by a fluid, the float arm swings upwards and the jutting portion of the sealing assembly is no longer

Abstract: A method and apparatus for servicing a pressurized system is described. A purge fitting can be used to vent the pressurized system. Venting can release a gas, such as air, from the system. The pressurized system can be a climate control system (e.g., an air conditioning or refrigeration system), a brake system, a hydraulic system, or a service device for servicing a climate control system. The purge fitting allows air that may be trapped in the pressurized system to be vented by depressing a purge actuator, such as a purge button attached to the fitting. The air can be vented from an opening adjacent to the actuator or other orifice. By purging air directly from the system, the amount of air introduced into the system during servicing can be minimized. The invention also features a coupling member that can be compact in size.

Abstract: A line pressure control system of an automatic transmission includes a hydraulic pump for generating hydraulic pressure, a regulator valve for adjusting the pressure from the hydraulic pump to a predetermined level, a torque converter control valve for adjusting a partial pressure from the regulator valve, a damper clutch valve receiving the adjusted pressure from the torque converter control valve for feeding the pressure to a damper clutch, a damper clutch solenoid valve for controlling the damper clutch valve, a reducing valve for reducing a partial pressure from the regulator valve and then supplying the reduced pressure to the damper clutch control valve, wherein the regulator valve includes a valve body, first and second valve spools coaxially inserted into the valve body, a sleeve encapsulating the second valve spool, and a coil spring interposed between the first and the second valve spools.

Abstract: An apparatus for flushing a water line includes a pipe, a valve in the pipe, and a controller that automatically opens the valve to allow water to flow through the pipe at preselected intervals and for preselected times. The controller derives power for its operation and the operation of the valve from a solar panel, which stores energy in a battery. The pipe's outflow orifice has a diffuser to slow the flow of water from the apparatus. An erosion mat cushions the impact of the water from the orifice and helps to prevent erosion of the surrounding soil. An alarm notifies passersby that the apparatus is about to flush the lines.

Abstract: For use with a city water system having a plurality of street water mains interconnected by branch water mains and having hydrants connected to the branch water mains, a city water flushing and sludge prevention method consisting the steps of: inserting a sludge-prevention control valve into a branch water main between two street water mains and closer to one of the two street water mains; the sludge-prevention control valve in the closed position preventing water from flowing through the branch water main from the closer street water main during a flushing operations, whereby all water flows through the branch water main from the more distant street water main and thereby flushes the portion of the branch water main between the sludge-prevention control valve and the more distant street water main; and an optional control mechanism adapted to close and open the sludge-prevention control valve. The control mechanism can utilize any power source such as electric, pneumatic, hydraulic, etc.

Abstract: A three piece full port ball valve for use with a form for producing a cast concrete article is provided wherein the housing of the valve has been modified by creating openings through the valve housing to access the flow opening in the ball member for clearing concrete slurry therefrom after the form has been filled. Additional openings in the housing at other locations can be created for cleaning around the ball member and the inside of the housing.

Abstract: An obturator prevents the tips or flaps of a duck-bill valve from self-adhering during storage or during sterilization procedures. The obturator holds the tips apart until the end-user is ready to use the valve. The duck-bill valve is used as an air outlet valve in blood reservoirs.

Abstract: A method and apparatus for desorbing processing liquid from a processing liquid delivery line is provided. Non-thermal energy, such as ultrasonic energy or electromagnetic energy, is applied to a processing liquid delivery line. The non-thermal energy may be applied directly to the processing liquid delivery line, or may be applied indirectly via a conducting medium which distributes the energy along the length of the processing liquid delivery line. When non-thermal energy in the form of electromagnetic energy is employed, the frequency of the electromagnetic energy is adjusted to match the vibrational frequency of the absorbed molecules of processing liquid.

Abstract: The invention provides a novel impact angle changing shower for spraying a fluid upon a moving belt surface while the belt travels at a selected belt velocity. The shower includes nozzles journaled to rotation about an axis in a plane normal to the belt surface and transverse to the belt direction. The nozzles are continuously supplied with pressurized fluid and direct a fluid stream at a selected nozzle velocity and nozzle angle relative to the plane. The orientation of the nozzles is selected to optimize the desired function namely, to clean the belt surface without damaging the belt fabric or felt, or to penetrate the belt to increase fluid absorption by the belt. The fluid stream nozzle velocity can be decomposed using vector mathematics into two vector components: a belt velocity vector component parallel to the belt direction; and a belt impact velocity vector oriented at an impact angle defined relative to the normal transverse plane.

Abstract: The solenoid valve (10) has an armature chamber (38) communicated with the outlets (86) of the valve to receive feed of fluid. The fluid in the chamber (38) is drained through drain passages (96) which are arranged to open into the chamber (38) at a location radially outwardly offset from the axis of the valve. The flow of fluid flowing into the chamber (38) is directly transferred to the drain passages (96) to thereby wash ferrous particles away from the magnetic gap to self-clean the gap each time the valve is opened. A spacer (62) made of a non-magnetizable material covers the upper end face of the armature (36) to prevent accumulation of ferrous particles.

Abstract: An automatic flush water distribution system for use in an evaporative cooling system includes a water distribution pipe adapted to be connected to a source of pressurized water. The pipe has a plurality of water distribution ports formed therein and a vertical flush pipe is connected at a first end to the water distribution pipe in liquid communication therewith. The flush pipe includes a second lower end and contains at least one valve seat and at least one buoyant float valve located therein between the valve seat and the water distribution pipe.

Abstract: A method for cleaning a solenoid-operated regulator valve wherein command current applied to a solenoid actuator establishes a defined response of a valve. Cleaning current pulses applied to the solenoid establish a response that does not interfere with the effectiveness of the valve function. The pulse width, pulse amplitude, pulse direction and pulse period are determined by the degree of contamination of the valve environment.

Abstract: For use with a city water system having a plurality of street water mains interconnected by branch water mains and having hydrants connected to the branch water mains, a city water flushing and sludge prevention apparatus consisting of: a sludge-prevention control valve insertable into a branch water main between two street water mains and closer to one of the two street water mains; the sludge-prevention control valve in the closed position preventing water from flowing through the branch water main from the closer street water main during a flushing operation, whereby all water flows through the branch water main from the more distant street water main and thereby flushes the portion of the branch water main between the sludge-prevention control valve and the more distant street water main; and a control mechanism adapted to close and open the sludge-prevention control valve.

Abstract: Liquid dispensing apparatus and methods for dispensing pressurized liquid including the use of a pressure relief and bypass valve. The liquid dispensing apparatus may include a pump operatively connected to a liquid reservoir and one or more liquid dispensers. A pressure relief and bypass valve is generally connected between an outlet of the pump and the liquid dispenser for providing both a pressure relief function and a bypass cleaning or flushing function. The bypass function helps prevent contaminants from lodging or accumulating within the valve.

Abstract: An automatic drain valve for discharging accumulations of fluids and foreign materials from a fluid handling system. The drain valve (10) comprises a reservoir (14) defining a reservoir volume (15) and a thru-port (28), in fluid communication with the reservoir volume (15), that defines an inlet (30) and terminates in a drainage valve (82) for flowthrough communications with a fluid handling system. An actuating mechanism selectively actuates a valve operator. In the preferred embodiment, a pilot valve (41) is mounted in the reservoir (14) for selectively communicating pressurized air to a valve operator (57), such that the valve operator selectively opens and closes the drainage valve (82) communicating with the outlet (88) of the reservoir (14) for selectively draining the reservoir. The pilot valve (41) includes a sensor tube (42) which defines a valve seat (44) and includes a magnetized valve plug (46) for selectively engaging the valve seat (44), the valve plug (46) having a selected magnetic polarity.

Abstract: A poultry drinker system includes a number of drinker lines each supplied from a common high pressure water supply through a water pressure regulator. Each regulator includes a reference spring establishing a default minimum water pressure. A centralized remote control system provides regulated low pressure air to the water pressure regulators to augment the reference spring force and remotely adjust the water pressure in the drinker lines. The remote control system periodically applies higher pressure air to the water pressure regulators to increase water pressure and flow rates and sequentially flush the drinker lines. The remote control system includes a source of high pressure air, an air pressure regulator for supplying lower pressure air and a stack of 3-way valves for applying low or high pressure air to each water pressure regulator.

Abstract: An inverted, displacer type piston pump for metering and dispensing liquids in which the cylinder is located beneath the piston and reciprocated via an actuator below the cylinder, and where the piston is held fixed. The liquid ingress and egress to and from the cylinder of the pump is via a cylindrical port through the piston along its cylindrical axis. The pump is designed so that liquid product loss through the pump is prevented without the use of elastomeric or compliant seals in the liquid contact product areas of the pump. In addition, the pump cylinder is capable of being positioned via its reciprocating actuator such that all of the liquid product contact parts are open and accessible to cleaning and sterilizing fluids which may be introduced into the pump through the liquid product supply port of the pump, thereby enabling cleaning and sterilization of the pump without its disassembly.

Abstract: A dosing apparatus 1 includes a material flow control arrangement 2 including vertical ducting 4 having co-axial therewith a vertically reciprocatory rod 5 mounting at its ends inlet and outlet valve closure plugs 6a and 6b. The upper and lower end zones of the ducting 4 define respective circular-cylindrical inlet and outlet 13a and 13b bounded by respective circular-cylindrical valve seats 14a and 14b in which the plugs 6a and 6b are sliding fits. Mounted on at least one horizontal extension piece 4d of the ducting 4 is at least one dosing pump 16. When the outlet 13b is closed by the plug 6b, the cross-section of the inlet 13a is unobstructed; similarly, when the inlet 13a is closed by the plug 6a, the cross-section of the outlet 13b is unobstructed. Furthermore, in an intermediate position of the rod 5, the cross-sections of both the inlet 13a and the outlet 13b are unobstructed, so that passage of a cleaning fluid through the ducting 4 is facilitated.

Abstract: A coupling device for the automatic coupling of a teeming ladle to several gas pipes is presented. The coupling device comprises a first coupling part connected to a gas supply and a second coupling part attached to the teeming ladle, with several gas outlets being arranged in the first coupling part and several gas inlets being arranged in the second coupling part. Each individual gas outlet can be closed by a closing element in the first coupling part, wherein, when being coupled to the second coupling part, this closing element is pressed inwards into the first coupling part and opens the corresponding gas outlet. To bring about self-cleaning of the coupling parts before they are coupled together, the closing elements are designed in such a way that, when the two parts of the coupling are coupled together, before the sealing union of the two coupling parts, a single gas outlet is first opened, before the other gas outlets are opened.

Abstract: A water hydraulic proportional control valve comprising: a valve body having a supply port, a control port and a return port; a spool axially movably disposed in the valve body for changing a direction of the working fluid and a flow rate of the working fluid; a direct driving mechanism which directly converts electric signals into a driving force for moving the spool, the valve opening of the control valve is controlled by means of a proportional control of the amount of a displacement of the spool from a neutral position thereof toward one direction or another according to an input signal supplied to the direct driving mechanism; spool side chambers provided on both sides of the spool; and drain channels formed in communication to each of the spool side chambers; wherein a water is used as the working fluid, and a flow passages is provided for introducing a pressurized fluid into said spool side chambers, whereby water filling the chamber is constantly replaced by a fresh water thereby preventing generation

Abstract: A buffer system for separating an aseptic fluid handling assembly from a drain includes a fluid receiving housing in fluid flow communication with a fluid discharge outlet of the aseptic fluid handling assembly. A trapped fluid discharge opening near the bottom of the housing, includes a tube which extends above the bottom into a baffle container. The baffle container is in the form of an enclosure having openings at the bottom thereof to admit fluids contained in the housing. A discharge conduit is in fluid flow communication with the discharge opening. A first fluid level detector in the housing activates at least one valve in the discharge conduit by a control which opens and closes the valve in response selected fluid levels detected by the fluid level detector. In a preferred embodiment the first fluid level detect detects a fluid level exceeding a preselected depth in the housing and a second fluid level detector detects fluid levels dropping below a second preselected level in the housing.

Abstract: A fluid flow control device particularly useful as a pressure regulator in a water supply system for poultry or other animals, includes a valve member movable towards and away from a valve opening in the housing to control the flow therethrough; a first diaphragm exposed to the outlet pressure producing a force tending to move the valve member towards the valve opening; a spring producing a force tending to move the valve member away from the valve opening; and a second diaphragm having an effective surface area exposed to the inlet pressure which is substantially the same as the effective surface area of the movable valve member exposed to the inlet pressure so as to substantially balance the forces produced by the inlet pressure on the valve member.

Abstract: A method for inserting a valve in a line includes providing a valve body that assembles on and rotates about an existing pipe. A first sealing mechanism is provided on the valve body that enables a user to selectively open (unseal) and close (seal) a gate access opening through the valve body. At least one cutting assembly is provided on the valve body for cutting the pipe as the valve body is rotated about the pipe, as well as a removably mountable gate assembly. The method proceeds by assembling the valve body on the pipe, rotating the valve body about the pipe with the cutting assembly and without the gate assembly, operating the cutting assembly to form the cut in the pipe (and removing any debris), mounting the gate assembly on the valve body, and then opening the gate access opening to enable movement of the gate through the gate access opening to a closed gate position within the cut in the pipe.

Abstract: A self-cleaning knob water faucet that includes a hollow water faucet housing, a water valve assembly, a knob, and water showering apparatus. The hollow water faucet body has an interior space and a spout from which water can exit. The water valve assembly is disposed in the hollow water faucet housing and has a distal end that extends outwardly therefrom. The water valve further has a closed position in which water does not exit the spout of the hollow water faucet body and an open position in which water exits the spout of the hollow water faucet body. The knob is disposed on the distal end of the water valve and is rotatable by a hand of user for moving the water valve assembly through the closed position of the water valve assembly and the open position of the water valve assembly.

Abstract: A double seat flow control valve includes three pneumatic pistons enclosed within two air chambers to operate upper and lower valve disks for venting operations in addition to valve opening and valve closing operations. An air boost is provided for the upper valve disk to maintain the upper valve disk in a closed position during venting of the lower valve disk.

Abstract: In an exemplary aspect, the invention provides a fluid distribution system including a first fluid path, and a second fluid path that is laterally spaced-apart from the first fluid path. A third fluid path connects the first and the second fluid paths. A valve is provided that is axially translatable through a third fluid path between a first position and a second position. In a first position, the valve is removed from the third fluid path, and in the second position, the valve substantially fills the third fluid path.

Abstract: A leak resistant, switching, double valve system consists of two sliding valve bodies in a valve housing with connecting lines. The two sliding valve bodies, which can be actuated independently of one another, are in contact in the closed position with valve seats in the valve housing, and are located at some distance one behind the other, forming a leak cavity between them. During the opening process, the first sliding valve body, before it leaves its valve seat, while simultaneously reducing the size of the leak cavity, can be placed in contact with the second sliding valve body, which is provided with a tubular extension which exits the valve housing in a sealed manner and connects the leak cavity to the environment of the valve system.

Abstract: A method for inserting a valve in a line includes the step of providing a valve assembly having a valve body with two sections adapted to be assembled over an existing pipe and a gate adapted to cut through the pipe as the gate advances from an open position toward a closed position. The method proceeds by installing the valve assembly on the existing pipe with the gate in the open position and then moving the gate toward the closed position to thereby cut through the pipe. A rotatable-pipe-cutter version of a valve assembly constructed according to the invention includes at least one cutting tooth and the valve body is configured so that an operator can rotate the body on the existing pipe while the gate is advanced toward the closed position. A guillotine version, suited for use with pipes made of polyethylene and other sliceable materials, includes a gate with a cutting edge that slices through the pipe as the gate is advanced toward the closed position.

Abstract: A gas line safety evacuation apparatus and method wherein earthquakes or other hazardous disruptive events are monitored and detected. Upon detection of an earthquake or like event, gas or other fluid lines are evacuated by an evacuation pump, and the evacuated gas is stored in a storage tank for future use. Control valves are activated upon detection of the earthquake to prevent additional gas or fluid from entering the lines.

Abstract: An apparatus for the discharge of a mass tower containing medium to high consistency pulp and operable without the need for further dilution includes a vessel for storing the pulp; a suction duct extending from a zone of moving pulp to a region outside of the tower; and a pump attached to the end of the suction duct for discharging the pulp.

Abstract: The invention relates to a ball valve of the trunnion type, comprising a valve housing having an oppositely directed coaxially aligned inlet and outlet, each of which being provided with an internal seat, and a reversible conventional valve ball formed with a through-going passage in the form of a central bore, adapted to be brought substantially into alignment with said inlet and outlet in the open position of the valve, and wherein the valve ball is adapted to close the passage through the valve housing in the closed position of the valve, establishing a sealing effect at the seats of the valve housing, the sealing surfaces of said seats following an eccentric course in relation to the geometric center of the valve ball.

Abstract: An improved, rapid clean-out valve assembly (36) is provided which is especially adapted for use on a food pump (10) or similar device. The assembly (36) includes a stationary valve body (38) presenting a pair of inlets (44, 46) as well as an outlet (50) and adapted to receive a pivotal valve rotor (52) therein; the rotor (52) is selectively pivotal via an actuator (60) between alternate flow-directing positions respectively communicating each inlet (44 or 46) with outlet (50). Rapid clean-up of the assembly (36) is afforded by means of structure (42) permitting manual translational movement of the internal valve rotor (52) from its operational position within housing (48) to a lowered, clean-out position outside of the confines of the housing (48). The structure (42) includes apertured slider blocks (76, 78) secured to an actuator housing (68), with the blocks (76, 78) receiving corresponding stationary guides (80, 82).

Abstract: A ball valve having a valve body defining a ball valve chamber and having a longitudinal axis defined by inlet and outlet passages. A ball valve element is rotatably disposed in said valve chamber. The ball valve element has a diametrically disposed fluid passage and is operatively connected to a control lever for rotating the ball valve element between a closed position and an open position. A basket strainer is removably mounted in the ball element passage in the ball valve element. The ball valve is provided with an internal pilot fluid flush passage that connects an inlet port to the ball valve chamber, and a pilot fluid flush discharge port and discharge valve that communicate with the ball valve chamber. A flow control plug valve is movably mounted in the internal pilot fluid flush passage for selective allowing or preventing fluid flow therethrough.

Abstract: A ball valve having a body with an inlet, an outlet and a cavity containing a ball with a spherical flow passage between the inlet and the outlet. A ring supported on the body concentric to the inlet and the outlet. A seat surface is supported on the ring between an outer transition surface, an inner transition surface and concentric to the inlet. The seat surface is engaged by the ball member. The inner transition surface and the outer transition surface are each inclined to the seat surface at a shallow angle. A flow passage extends through the spherical surface of the ball at a sharp edge that moves across the transition surface adjacent the seat surface to the seat surface as the ball moves from an open to a closed position. The sides of the ball each have a recess extending through the spherical surface at a sharp edge whereby a cleaning action on the seat results during opening and closing of the spherical surface.

Abstract: A process gas supply system at the gas supply point includes an automated means for evacuating gas in a process line fed by the process gas supply system when an abnormal event occurs. The process gas supply system of this invention eliminates the need for any special valves or piping at the point of use of the process gas as well as the need for a return line from the point of use to the process gas supply system to purge the process line. A process gas is contained in a cylinder under pressure. The cylinder is coupled to a process line by the process gas supply system. The process gas supply system includes a gas flow controller and an automatic evacuation system. The gas flow controller controls the supply of the process gas from the cylinder to the process line. In an abnormal event, process gas flow from the cylinder is blocked by the gas flow controller and the automatic evacuation system evacuates the process gas not only from the gas flow controller, but also from the process line.