Abstract: A pillar sink mixer has a hot water faucet pillar, a cold water faucet pillar, a mixing chamber and a diverter valve to supply mixed water to a faucet nozzle or to a hand spray. The mixing chamber and diverter valve are positioned in a bridge above a mounting surface, and a passage, providing fluid communication with the hand spray device, being incorporated within the bridge and a faucet pillar.

Abstract: Embodiments of the present invention relate to a method and apparatus for rapid delivery of pulses of one or more reactants to a substrate processing chamber. One embodiment of a valve body includes a first inlet, a second inlet, and an outlet. A valve chamber is in fluid communication with the first inlet, the second inlet, and the outlet. A valve seat is formed at least around the first inlet. The valve chamber further includes an annular groove formed around the valve seat coupling the second inlet and the outlet. One embodiment of a pneumatic valve assembly includes a valve body having at least two ports. A valve seat surrounds one of the ports. The pneumatic valve assembly further includes a diaphragm assembly having a diaphragm movable to open and close the one port. A piston housed in a cylinder is coupled to the diaphragm to actuate the diaphragm. An actuation chamber is formed between the cylinder and the piston. In certain embodiments, the internal volume of the actuation chamber is about 3.

Abstract: The present invention provides a manifold for receiving fluid tubes in a bulk compounder. In its simplest form, the manifold includes a plurality of inlets, each inlet defining an opening to a respective fluid passageway, and each passageway contains a check-valve. Included in this manifold is an outlet in fluid communication with the fluid passageways and an inlet port which is coaxial with the outlet. The coaxial inlet port contains a check-valve. Included as a part of the present invention is a cannula adapted for use with the manifold of the present invention, tube sets for use with the manifold of the present invention, and a method of minimizing error in filling a bag using a manifold in accordance with the present invention.

Abstract: The invention proposes a plumbing fixture block, which has seatings for a mixing device and a shut-off valve. Furthermore, the plumbing fixture block has seatings to accommodate at least one nonreturn valve and one pipe air-release valve. The nonreturn valve and the pipe air-release valve are located one behind the other in a water channel.

Abstract: An apparatus for storing and mixing two pressurized gases. The apparatus has an outer container for storing the first gas and an inner container, situated inside the outer container, for storing the second gas. The gases exit their containers through outlet passages, are mixed together resulting in a mixture which leaves the apparatus through and output channel.

Abstract: The present invention provides a manifold for receiving fluid tubes in a bulk compounder. In its simplest form, the manifold includes a plurality of inlets, each inlet defining an opening to a respective fluid passageway, and each passageway contains a check-valve. Included in this manifold is an outlet in fluid communication with the fluid passageways and an inlet port which is coaxial with the outlet. The coaxial inlet port contains a check-valve. Included as a part of the present invention is a cannula adapted for use with the manifold of the present invention, tube sets for use with the manifold of the present invention, and a method of minimizing error in filling a bag using a manifold in accordance with the present invention.

Abstract: A dual hydrant includes two spaced apart tubular bodies to receive in-flow of fluids A and B, a fluid mixing zone to receive fluids A and B from the bodies, manually operable flow control valves in the two tubular bodies, primary and secondary check valves in the respective bodies to pass forward fluid flow toward the mixing zone, and to block reverse flow, an outlet from the mixing zone.

Abstract: An ultra accurate gas injection system with vehicle transient air simulation is provided. The device includes an input device, at least one mass flow device, an air flow device, a controller, such as a PC based controller, and an output device. The air flow device issues an air flow rate signal indicative of at least the actual air flow rate and receives an air flow control signal. The controller issues gas and air flow control signals, repeatedly reads the air flow rate signal and compares the actual air flow rate with the target air flow rate. The controller adjusts the air flow control signal such that the actual air flow rate is substantially equal to the target air flow rate. The mass flow device injects at least one gas into the air stream which is subsequently emitted into the external system to simulate exhaust gas from a vehicle.

Abstract: A thermostatic valve for mixing hot water and cold water includes a valve body defining a first inlet, a second inlet, a mixing chamber, a first passageway between the first inlet and the mixing chamber, and a second passageway between the second inlet and the mixing chamber. The thermostatic valve includes first and second flow control assemblies and first and second screen assemblies assembled into the valve body. A first screen assembly is positioned downstream of a first flow control assembly and a second screen assembly is positioned downstream of a second flow control assembly. Each screen assembly is removable from the valve body and includes a screen body having a screening portion with a lower open end and a top portion. The screen assembly includes a closing cap to retain accumulated particulate matter. A retaining clip is used to hold the screen assembly in position within the valve body.

Abstract: A system and method for the mixing and the application of liquids to various surfaces. The system includes a primary tank having a liquid fill fitting, a gas fitting, and an outlet. A pressurized gas source is in fluid communication with the primary tank by way of the gas fitting and a mixing device is in fluid communication with both the outlet and a concentrate reservoir. The mixing device is arranged and configured to mix the liquid and the concentrate into a liquid mixture. The system is configured such that the pressurized gas source expels the liquid through the outlet and the mixing device, thereby creating the liquid mixture.

Abstract: A manifold valve of the invention comprises a body and respective actuators driving a plurality of valve bodies arranged within the body. The body having a valve chamber on the main flow passage side and a valve chamber on the secondary flow passage side which are communicated with each other by a connecting flow passage, and further having a main flow passage communicating with a communicating port arranged on the bottom center of the valve chamber on the main flow passage side, a branched flow passage communicating with the valve chamber on the main flow passage side, and a secondary flow passage communicating with a communicating port arranged on the bottom center of the valve chamber on the secondary flow passage side. The communicating ports on the sides of the main flow passage and the secondary flow passage are respectively provided with opening and closing valve bodies driven by the actuators.

Abstract: An on-chip chemical compound dilution system for providing dilution of a chemical compound in a microfluidic application includes at least one sample well for providing a selected chemical compound to be diluted, a dilution well for providing a diluent for diluting the chemical compound, a network of channels for carrying the chemical compound and diluent, a first syringe pump for effecting dilution, a second syringe pump, a detector and a plurality of valves for selectively controlling the flow of liquid through the channels. The dilution system may be a multiple-stage dilution system for precisely mixing a plurality of chemical compounds in a diluent. The dilution system allows for accurate calibration to compensate for variations due to manufacturing, thereby providing precise dilution ratios. The dilution system further enables flushing to allow re-use of the system with another chemical compound.

Abstract: A flanged bushing top portion is applied to a sink or counter surface over a mounting hole with a skirt portion descending from the top portion of the flanged bushing in to the mounting hole. A tapered expansion sleeve is threaded into the skirt portion of the flanged bushing. As the tapered expansion sleeve is threaded upwards into the tapered skirt portion, the skirt expands and pressed against the inside diameter of the sink mounting hole thereby securing the flanged bushing to the sink surface. A faucet valve assembly, soap/lotion dispenser, or water dispenser is lowered into the bores of the flanged bushing and the expansion sleeve, and the valve's escutcheon collar is secured to the top of the flanged bushing by means of a lock down collar which is threaded onto the exterior threads of the flange of the flanged bushing. This secures the valve assembly, soap/lotion dispenser, or water dispenser to the flanged bushing and consequently to the sink.

Abstract: A shower faucet manifold assembly includes a manifold defining an inlet including first and second bores. The first bore is of a larger diameter than the second bore. Disposed within the first bore is a piston including an o-ring seal that engages the inner surface of the second bore to prevent water flow. The first and second bores are disposed along a common axis to enable manufacturing and fabrication from a common end.

Abstract: In a dual hydrant, the combination comprising two spaced apart tubular bodies to receive in-flow of fluids A and B, a fluid mixing zone to receive fluids A and B from said bodies, manually operable flow control valves in the two tubular bodies, a primary check valve in one of the bodies to pass forward fluid flow toward said mixing zone, and to block reverse flow in the one body, an outlet from the mixing zone, and a secondary check valve in series with the outlet to pass forward flow from either or both of the two bodies through the outlet, and to block reverse flow from the outlet to the mixing zone.

Abstract: A safe casing includes a casing having an open space in one side, a solenoid valve device installed in a place of the open space, a low-voltage, low-current circuit control device installed in the other place of the open space and a sealing means. The open space of the casing is sealed by use of the sealing means after it is installed with such devices of solenoid valve and circuit control.

Abstract: A thermostatic mixing valve for the mixing of a first fluid and a second fluid is disclosed. The thermostatic mixing valve is configured to produce a mixed fluid of a particular temperature from a first fluid of a temperature higher than or equal to the particular temperature and a second fluid of a temperature lower than or equal to the particular temperature. The thermostatic mixing valve includes a valve body having a first fluid inlet, a second fluid inlet, and a mixed fluid outlet. The thermostatic mixing valve also includes a valve member configured to control the rate of flow of at least the first fluid.

Abstract: The invention relates to a fitting part, suitable for conducting water of different temperature from at least one mixing and proportioning element. The fitting part has at least three ducts, the first duct and the second duct each running from a lower opening arranged in the region of the lower end of the fitting part to an opening at the side on the fitting part, and the third duct running from a lower opening arranged in the region of the lower end of the fitting part to an upper opening arranged in the region of the upper end of the fitting part and having at least one branch with a lateral opening. The flow direction of the water through the third duct is defined individually for each fitting by suitable separate closing elements, so that a large number of different fittings can be produced using a small number of components. The invention also relates to a fitting with such a fitting part.

Abstract: The present invention relates to fluid control systems and methods therefor. More particularly, such fluid control systems and methods of this invention are deigned to allow opening and closing of mixed fluid only at a downstream of a junction in which at least two streams of fluids having different properties are arranged to mix together. Thus, the fluid control systems and methods of the present invention allow an user to start or stop dispensing of the mixed fluids at any time and in any number of occasions without having to require the user to readjust control valves to obtain a desired property of the mixed fluids. Such fluid control systems may be incorporated to conventional shower assemblies, shower-tub assemblies, and sink assemblies, thereby allowing the user to turn off dispense of fluids when he or she does not need the fluids running.

Abstract: A faucet assembly includes a first handle attached to rotate a fluid control member and includes a first groove. A second handle is attached to move the fluid control member along a central axis and includes a second groove aligned with the first groove. A retainer ring disposed is movable within the first and second grooves between a release and a secure positions. A biasing member within the second groove biases the retainer toward the release position and a threaded member within the first handle biases retainer toward the secured position. The setscrew moves the retainer from the release position by moving a portion of the retainer from the second groove to the first groove within the first handle.

Abstract: An improved strainer in a shower bath tap valve is essentially having provided a trough respectively over the inlet passages of cold and hot water to place in a strainer comprised of support, seat and mesh; the strainer then is secured to the valve with fixation nuts so to make easier replacement of the strainer without removing couplings to both cold and hot water supply lines.

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 quick connect fitting is provided for connecting a pressure fluid container to an intake port of a consumer system, such as a fuel cell stack. The fitting includes a solenoid-activated valve for controlling outflow of fluid from the pressure fluid container. The valve is biased to a closed position when no electrical power is supplied to the solenoid. In one embodiment the fitting incorporates a coupling mechanism for removable attachment to the intake part of the consumer system.

Abstract: A shower faucet manifold assembly includes a manifold defining an inlet including first and second bores. The first bore is of a larger diameter than the second bore. Disposed within the first bore is a piston including an o-ring seal that engages the inner surface of the second bore to prevent water flow. The first and second bores are disposed along a common axis to enable manufacturing and fabrication from a common end.

Abstract: A combined faucet and drain system can be installed primarily from above the basin. The faucet includes a quick-connect fastening assembly with a threaded sleeve bolt that also doubles as a life rod guide. A spring-biased toggle fastener threads onto the sleeve bolt and collapses when inserted through an installation opening from above the basin. It then automatically unfolds and engages an undersurface when the sleeve bolt is turned. The drain assembly is mounted in a drain opening of the basin and includes a movable stopper guide that can be used during installation to align the drain flange to the drain body from above the sink. A method of installing a combined faucet and drain assembly to a plumbing fixture is also disclosed.

Abstract: A mounting structure, for a plurality of high pressure gas vessels (11a, 11b), has a block-shaped vessel mounting member (1) with a high rigidity formed with accommodating portions (5a, 5b, 9a, 9b) for accommodating first neck portions (12a, 12b) formed at one sides of the plural high pressure gas vessels and vessel base-valves (13a, 13b) and formed with a gas flow passage (6) that opens at openings (7a, 7b) of right and left side walls of the vessel mounting member (1) to allow the accommodating portions to communicate with one another. The neck portions (12a, 12b) and the vessel base-valves (13a, 13b) at the one sides of the plural high pressure gas vessels are accommodated in the accommodating portions (5a, 5b, 9a, 9b) of the vessel mounting member 1, and the plural high pressure gas vessels are mounted in the vessel mounting member (1), enabling the gas flow passage 6, formed in the vessel mounting member (1), to serve as a high pressure conduit portion.

Abstract: A safe casing includes a casing having an open space in one side, a solenoid valve device installed in a place of the open space, a low-voltage, low-current circuit control device installed in the other place of the open space and a sealing means. The open space of the casing is sealed by use of the sealing means after it is installed with such devices of solenoid valve and circuit control.

Abstract: Methods and apparatus for allowing the injection of hydrate inhibitors into a valve cavity without washing out the valve seals, generally comprising a valve having a sealing member, such as a gate or a ball, that provides for fluid communication between the valve cavity and the valve flowbore. One embodiment of a valve constructed in accordance with the present invention is an expanded gate valve comprising a valve body having a flowbore intersecting a valve cavity and a gate assembly disposed within said cavity. The gate assembly is a parallel expanding gate assembly having ported, juxtaposed members that are moveable into a sealing arrangement with upstream and downstream valve seats disposed about the flowbore. The gate assembly further comprises a flow path that enables direct fluid communication between the aligned ports and the valve cavity.

Abstract: The invention concerns a device (10) for supplying a powdery coating product to a sprayer (1) in an installation spraying such a product. The invention is characterized in that it comprises at least two modules (11, 14) connected each to a source (B1-B4) of coating product and forming each part (112, 113) of a common manifold (C) connected to said sprayer (1) for circulating said product (P1-P4).

Abstract: A quick connect/disconnect faucet water conduit assembly includes at least one valve body and a spout nipple. There is a water tube extending from the valve body and a water tube extending from the spout nipple. A conduit has first and second terminations and there is a quick connect adapter attached to each of the first and second terminations. There are cooperating elements on each of the tubes and the quick connect adapters for locking the tubes to the adapters to thereby attach the valve body to the spout nipple.

Abstract: A manifold comprising a container having two ports; a conduit connecting the container to a source/dispense of chemical having a first end and a second end and a connector for the ends; first block valve having two diaphragm valves, each valve having a valve seat side and a diaphragm side, each valve seat side faces the other valve seat side, and connected to the first end of the conduit, one diaphragm side connected to a first port, and another diaphragm side connected to vent; a second block valve having two diaphragm valves, having a valve seat side and a diaphragm side, wherein each valve seat side faces the other valve seat side, and each valve seat side connected to the second end of the conduit, the diaphragm side of one valve connected to purge, and the diaphragm side of another valve connected to push gas or chemical outlet.

Abstract: An automatic manifold for a catheter assembly. Valve means automatically open and close flow between a liquid supply port for connection to injection means and a liquid delivery port for communication with the catheter assembly. A pressure sensor is integrated into the manifold. The manifold also includes a quick-disconnect coupling mechanism for a liquid supply port.

Abstract: An apparatus is provided for installing a faucet on a top side of a deck. The apparatus includes a threaded member engaged with the faucet and extending through the mounting hole to be rotated from above the deck. A nut is threadedly connected to the threaded member to pass through the mounting hole to the underside of the deck. A second member associated with and parallel to the threaded member engages the nut to prevent rotation thereof during rotation of the threaded member whereby the nut will be shifted up or down along the length of the threaded member. A pair of retaining arms are provided whereby, upon rotation of the threaded member to raise the nut in the direction of the deck, the retaining arms will bend outwardly and engage the underside of the deck to clamp the faucet to the deck.

Abstract: A feedblock for supplying a multi-layer stream of polymeric material to an extrusion die is provided wherein the dimension of at least some of the layers of the multi-layer stream can be precisely adjusted and/or controlled. The feedblock includes a primary flow path which is used to create a first layer and two secondary flow paths which are used to create a set of second and third layers. The secondary flow paths are positioned relative to the primary flow path such that the second and third layers are deposited on opposing sides of the primary layer in a sandwich-like configuration. Each of the secondary flow paths include a contoured slot through which a secondary fluid stream of polymeric material is deposited onto a primary stream of polymeric fluid flowing in the primary flow path. The contoured slot is geometrically shaped such that adjusting the position of the contoured slot alters the shape of the secondary fluid stream as it is deposited onto the primary flow path.

Abstract: A flow controller having a first and second stages of regulation. The first stage is a pressure regulation stage that maintains the pressure within an intermediate chamber (formed by a series of interconnected passageways and cavities) within a predetermined range above the pressure in an outlet port. The second stage maintains the flow rate within a predetermined range about a target flow rate. Both stages sample the pressure in the outlet port and automatically adjust the flow of fluid to ensure that fluctuations in pressure at the inlet and outlet ports do not affect the flow rate. The flow rate is set and controlled by a user determined setpoint. The pressure is regulated by one or more feedback systems. The feedback systems used may be mechanical or electromechanical based on a particular operating environment.

Abstract: A thermostatic mixing valve for the mixing of a first fluid and a second fluid is disclosed. The thermostatic mixing valve is configured to produce a mixed fluid of a particular temperature from a first fluid of a temperature higher than or equal to the particular temperature and a second fluid of a temperature lower than or equal to the particular temperature. The thermostatic mixing valve includes a valve body having a first fluid inlet, a second fluid inlet, and a mixed fluid outlet. The thermostatic mixing valve also includes a valve member configured to control the rate of flow of at least the first fluid.

Abstract: A color changer includes a first passageway and a second passageway. A valve is coupled to the first passageway and the second passageway to control color flow between the first and second passageways. The first passageway is adapted to permit the passage of a color-conserving pig through the first passageway.

Abstract: A flow cell having at least two inlet channels, each connectable with a reservoir and controllable via valves and ending in an inlet chamber is disclosed herein. Each of two ends of the inlet chamber is connected with a discharge channel through at least two outlet channels. Previously supplied fluid remaining in the inlet chamber is displaced into the discharge channel by newly supplied fluid. The at least two outlet channels establish fluid purity in the chamber via rapid fluid transfer.

Abstract: Check valves for use in fluid conducting structures such as thermostatic mixing valves are provided. Illustratively, the fluid conducting structure provides a passageway defining an axis, and the check valve comprises a cap coupled to the structure, a seat disposed in the passageway and spaced apart from the cap, a valve member axially movable between a sealed position engaging the seat and an opened position spaced apart from the seat, and a spring urging the valve member to engage the seat, the spring being coupled to the valve member and the cap.

Abstract: A quick connect/disconnect faucet water conduit assembly includes at least one valve body and a spout nipple. There is a water tube extending from the valve body and a water tube extending from the spout nipple. A conduit has first and second terminations and there is a quick connect adapter attached to each of the first and second terminations. There are cooperating elements on each of the tubes and the quick connect adapters for locking the tubes to the adapters to thereby attach the valve body to the spout nipple.

Abstract: Apparatus for treating water utilizes a single flow control valve that has only one moving part to divert treated water from several water treatment units to backwash another water treatment unit.

Abstract: A vacuum assist system and process for handling cutting fluid and chips collected from a series of machine tools includes a closed header pipe extending below a series of sumps associated with the machine tools, the sumps draining into the header pipe. The header pipe has a down leg extending vertically down to a filter tank which is opened periodically to drain the header pipe, developing a vacuum which assists the flow of liquid down the header pipe so as to insure a sufficient flow velocity in the header pipe to carry the collected chips out of the header pipe and into the filter tank with the cutting fluid.

Abstract: A lavatory faucet comprises a connection pipe, a water mixing bolt seat mounted on the connection pipe, a fastening board movably located over the water mixing bolt seat, a water mixing bolt tube, a locating bolt, and a faucet neck mounted on the lavatory basin and engaged with the locating bolt and the water mixing bolt tube which is located by the fastening board pressing against the lavatory basin.

Abstract: A flow controller having a first and second stages of regulation. The first stage is a pressure regulation stage that maintains the pressure within an intermediate chamber (formed by a series of interconnected passageways and cavities) within a predetermined range above the pressure in an outlet port. The second stage maintains the flow rate within a predetermined range about a target flow rate. Both stages sample the pressure in the outlet port and automatically adjust the flow of fluid to ensure that fluctuations in pressure at the inlet and outlet ports do not affect the flow rate. The flow rate is set and controlled by a user determined setpoint. The pressure is regulated by one or more feedback systems. The feedback systems used may be mechanical or electromechanical based on a particular operating environment.

Abstract: A fluid control device comprises a first passageway, and a second passageway communicating therewith and having a terminating end closed with a fluid control unit or instrument. The first passageway is adapted to pass a fluid therethrough with a different fluid remaining in the second passageway. The first passageway comprises an upstream portion and a downstream portion communicating with the upstream portion at an approximate right angle therewith. The second passageway extends from a terminating end of the upstream portion of the first passageway in alignment with the upstream portion.

Abstract: A manifold for transfer of chemical, comprising; a heated first conduit for connecting a vessel for containing the chemical to a another vessel, a source of pressurized gas and a source of vacuum; a heated first block valve assembly having first and second diaphragm valves, each valve having a diaphragm and a valve seat side and a diaphragm side, wherein the valve seat side of each valve is juxtaposed to the valve seat side of the other valve, and each valve seat side of each valve communicating with the first conduit; a first connector in the first conduit for detaching the conduit from the vessel; a second conduit, for delivering chemical to the vessel, the second conduit connected to the diaphragm side of the first valve; and a third conduit, for communicating pressurized gas and vacuum to the first conduit, connected to the diaphragm side of the second valve.

Abstract: The invention relates to a device for storing and mixing two gases or mixtures of gases under pressure. The device includes: an outer chamber containing the first of the gases and being equipped with an opening; an inner chamber arranged inside the outer chamber containing the second gas, and being equipped with an opening; a two-way valve which includes a body fixed hermetically in the opening of the outer chamber, a first passage having one end connected to the inner chamber and being equipped with a first controllable shut-off device, and a second passage having a first end connected to the outer chamber and being equipped with a second controllable shut-off device; first and second flow rate and pressure adjusting devices, each being connected to one of the passages of the valve; and first and second pipes for connecting the outlet of each adjusting device to a single outlet.

Abstract: A fluid control device comprises a first passageway, and a second passageway communicating therewith and having a terminating end closed with a fluid control unit or instrument. The first passageway is adapted to pass a fluid therethrough with a different fluid remaining in the second passageway. The first passageway comprises an upstream portion and a downstream portion communicating with the upstream portion at an approximate right angle therewith. The second passageway extends from a terminating end of the upstream portion of the first passageway in alignment with the upstream portion.

Abstract: An apparatus is provided for installing a faucet or end body valve assembly on a top side of a deck. The apparatus includes a threaded member engaged with the faucet or end body and extending through the mounting hole to be rotated from above the deck. A wedge nut is threadedly connected to the threaded member to pass through the mounting hole to the underside of the deck. A second member associated with and parallel to the threaded member engages the nut to prevent rotation thereof during rotation of the threaded member whereby the nut will be shifted up or down along the length of the threaded member responsive to the direction of rotation of the threaded member. A retainer member is disposed around the threaded member and includes a plurality of legs which each include a foot portion at an end thereof.

Abstract: A freezeless wall hydrant for delivery of hot or cold water from a single discharge conduit has first and second fluid inlet pipes in parallel spaced relation. The pipes have forward and rearward ends and are connected respectively to sources of hot and cold pressurized water. A laterally extending fluid conduit member connects the forward ends of the first and second fluid inlet pipes and is in communication therewith. A fluid closure valve is located in the rearward ends of each of the first and second fluid pipes. A check valve is in each of the pipes forwardly of the fluid closure valves and is capable of permitting fluid flow in the pipes in a direction from the closure valve, but prevents fluid flow towards the closure valves. A valve rod having forward and rearward ends rotatably extends through the laterally extending fluid conduit and through the forward ends of the first and second inlet pipes and has one end operatively connected to the check valves in the rearward ends of the fluid inlet pipes.