Abstract: In an electromagnetic valve, a valve member is slidably installed in a housing to open and close a valve hole. A moving core is slidably installed in the housing, and a coil generates a magnetomotive force to attract the moving core to one side when it is energized. The valve shaft links a motion of the moving core with a motion of the valve member. A bellows surrounds the valve shaft to form a cylindrical inner space between the valve shaft and itself. The bellows is subjected to both positive and negative pressures to extend and shrink in accordance with the motions of the valve member and the moving core. An inner volume of the inner space increasing and decreasing in accordance with extending and shrinking operations of the cylindrical bellows portion. The opening of the bellows and the valve shaft form a narrow opening passage.

Abstract: A pressure controller device includes a housing accommodating a precision pressure regulator incorporating a first diaphragm operable upon a main valve provided between an inlet and an outlet in the housing. The regulator further includes a second diaphragm operable upon a flapper-nozzle arrangement to set the pressure of the working fluid discharged through the device. The housing further includes a resiliently loaded shuttle actuable by an operating handle connected thereto and externally protruding from the housing to operate the second diaphragm and the flapper-nozzle arrangement. Manual operation of the handle, and resulting linear movement of the shuttle, effects movement of the second diaphragm and the flapper-nozzle arrangement and thus by pressure fluid to operate the first diaphragm and thus the main valve. Consequential variation in the pressure of the fluid delivered by the device is thus achieved by the shuttle overriding the operation of the diaphragms and thus the valve.

Abstract: A linear solenoid for an EGR valve is presented in three alternatives in a constructive way, i.e., with manufactured tube carcass or casing, carcass or casing with deep print and with conformed cold carcass or casing.

Abstract: A gas pressure regulator of the kind in which a valve member is spring biased to the valve-open position and is moved to the valve-closed position when upstream pressure at an outlet overcomes the spring is arranged such that gas pressure at an inlet end of the valve member 12 does not influence it in the valve-opening direction. In the embodiment of FIGS. 3 and 4 a bottom end of the valve member receives a piston-like plug. Openings in the wall of the valve member are occluded when the valve is closed. In the open position of the valve member pressure is equal all round each opening. In another embodiment of the invention a spool is provided having one enlarged end within the valve member and another outside it. Pressure on the combined surfaces of the end and the end of the valve member is equal to the pressure on the end of the spool.

Abstract: A flow control device having a first port, a second port, a third port and the movable member. In a first mode, the movable member seals the second port while allowing fluid flow between the first and third ports, wherein the differential pressure between the first port and third port, during the first mode, is about zero. In the second mode, the movable member seals the first port while allowing fluid flow between the third port and second port, wherein the movable member is adapted to transition from the first mode to the second mode in response to a small change in differential pressure.

Abstract: A condensate drain includes a body defining an interior space. An inlet opening is in fluid communication with the interior space of the body for allowing condensate to enter into the interior space, and an outlet opening is in fluid communication with the interior space of the body for allowing condensate to exit the interior space. A float is disposed in the interior space for movement within the interior space relative to the body generally along a float axis between a closed position in which the float blocks fluid communication from the inlet opening to the outlet opening and an open position in which the float permits fluid communication from the inlet opening to the outlet opening. The float is buoyant so that the float is moved to the open position by condensate as condensate fills the interior space of the body. The interior space and the float are sized and shaped so that the float is constrained to substantial alignment with the float axis.

Abstract: A fuel cutoff valve is provided with a casing that forms a valve chamber that is connected to a connection conduit, a float mechanism that is housed so as to be able to rise and fall in the valve chamber, and a spring that supports the float mechanism. The float mechanism is structured through an assembly of a first float body and a second float body, where the first float body is provided with a valve portion that opens and closes the connection conduit and provided with a storage chamber that is open on the bottom, where the second float body is housed in the storage chamber to be assembled into the first float body.

Abstract: A vent apparatus is opened to allow free flow of fuel vapor from a vehicle fuel tank through the vent apparatus to a fuel vapor recovery canister during tank refueling until a predetermined level of liquid fuel is reached in the vent apparatus. Once refueling has been completed, the vent apparatus is closed to block or limit further flow of liquid fuel to the vent apparatus. At the same time, fuel vapor discharge passageways in the vent apparatus that had been closed once the fuel tank had been filled to a predetermined capacity with liquid fuel are reopened so that fuel vapor can flow freely from the fuel tank to the canister even though the volume or height of liquid fuel in the fuel tank has not decreased since the tank was filled during refueling.

Abstract: A coupling (110) comprising a pair of female couplers (116) each independently movable within a respective housing bore (114) among an operating position, a release position, and a coupling position. When a female coupler (116) is moved to the coupling position, a stop member (136) moves the plunger of a pressure relief valve (124) to an open position to allow fluid to be released from the female coupler (116) prior to coupling a male coupler thereto. A cam member (126), which is used to move the respective female coupler (116) from the operating position to the release position, can move away from the plunger when the female coupler (116) is in the coupling position as the pressure relief valve (124) is held open by the stop member (136).

Abstract: The dual flange hopper tee or other fitting connects to the bottom of a hopper for use in unloading the contents thereof, and has a relatively low profile for ground clearance. When used in conjunction with a valve, the tee or other fitting can be removed from the hopper without requiring removal of the valve, and can allow opening of the valve without interfering with flow through a horizontal pipe section of the fitting.

Abstract: A control stop for a flush valve for a urinal or toilet fixture includes a housing defining a flow chamber divided by a valve seat into inlet and outlet sections. A valve structure is biased toward the valve seat by a spring applying a valve closing spring force. The housing is sealed by a diaphragm, and the diaphragm covers the movable valve structure, isolating it from water flowing through the housing. The diaphragm does not impede valve structure movement, and the closing spring force establishes a threshold water supply pressure for opening the control stop during increasing pressure following a no or low supply pressure condition. A plurality of control stops may supply a bank of flush valves and fixtures, and open in a cascading sequence during increasing pressure as a result of having springs with different closing spring forces.

Abstract: A frost-proof valve includes a main valve. The main valve opens a fluid connection between an inflow opening and a discharge opening through a connecting channel in an open position and blocks the channel in a closed position. An actuating mechanism switches the main valve between the open position and the closed position. A drain drains the valve in the closed position and includes a bypass line connecting first and second channel sections.

Abstract: What is disclosed is a pilot-controlled pressure feed valve comprising a main stage and a pilot control stage, wherein the main stage comprises a piston that is biased into a closed position. The piston is provided with a piston bore through which an input port may be connected with a rear-side spring chamber. To this piston bore a throttle valve means is associated which provides a comparatively small cross-section of flow for the control oil in the pressure limiting function of the pressure feed valve, and a comparatively large cross-section of flow in the anti-cavitation function.

Abstract: A pressure regulator for dispensing CO2 gas from a pressurized cylinder which has a reduced probability of freezing when liquid carbon dioxide is converted to the gaseous phase. A plunger which is configured to increase the length of the gas flow path between the regulator inlet and the regulator outlet, and thus to allow liquid CO2 more time to convert to a gas before egressing from the regulator. In the preferred embodiment orifices are provided through the plunger head and spaces are provided about the periphery of the plunger head, which allow the CO2 liquid to flow from the underside of the plunger through the plunger head, over the top of the plunger and about the side of the plunger head before egressing through the regulator outlet.

Abstract: A flow component for medical infusion/transfusion lines comprises a main duct and a lateral tubular connection containing a one-way valve, in an area corresponding to which the main duct has an axial section with a wall having a convergent-divergent profile.

Abstract: A tank structure comprises a tank body for storing liquid and control devices for supplying or discharging the liquid to or from the tank body. The tank structure further includes an upper exterior member having a lower flat surface and a lower exterior member having an upper flat surface. The tank body includes an upper and a lower flat surfaces facing the lower flat surface of the upper exterior member and the upper flat surface of the lower exterior member. The tank body is held in sandwiched between the upper and lower exterior members.

Abstract: A fluid controlling method includes, sending an inner fluid, and sending an outer fluid coaxially with the inner fluid, wherein one of the inner fluid and the outer fluid includes a corkscrew flow that flows spirally, and wherein the inner fluid and the outer fluid are in contact with each other.

Abstract: A method for handling an easily polymerizable substance and a device for handling an easily polymerizable substance are provided that prevent polymerization of the easily polymerizable substance in a bypass line by renewing the easily polymerizable substance retained in the bypass line of a flow control valve or flow meter installed in a line through which flows liquid containing an easily polymerizable substance. The method for handling an easily polymerizable substance renews liquid containing an easily polymerizable substance retained in the bypass line by intermittently opening and closing a bypass shutoff valve. The method for handling an easily polymerizable substance allows a portion of a liquid containing an easily polymerizable substance flowing through a line to flow through a bypass line by opening a bypass shutoff valve during handling of a liquid containing an easily polymerizable substance.

Abstract: A flow control device having a power saving effect in addition to a water saving effect. Further, another object is to provide a flow control device easy to install, maintain and manage. The flow control device of the invention comprises a flush valve device having a main control valve in a path leading from an inlet to an outlet, a flowmeter unit for converting the presence or absence of flow of washing water leading from the inlet to the outlet into a pulse signal and outputting the latter, a control device for controlling the opening and closing of the main control valve according to the output of the flowmeter unit, and a power generating unit for generating power by using the flow of the washing water as power, wherein at least part of the power obtained in the power generating unit is supplied to the control device.

Abstract: A valve includes a drive part provided with a piston for driving a valve element in an axial direction, a valve body formed at one end in the axial direction with a valve chamber for accommodating the valve element, and a base seat. The drive part includes leg parts suspended down from one end in the axial direction. The leg parts form a receiving part for accommodating the valve body inside the leg parts. The valve body is inserted into the receiving part so that the valve element of the drive part is accommodated in the valve chamber of the valve body. Then, the base seat is fixed to the leg parts in the state with the seat made to abut against the other end of the valve body in the axial direction so that the valve body is held between the base seat and the drive part.