Abstract: An electric coolant pump may include a valve device controlled at a discharge side by pressure. The valve device may include a coolant inlet, a first coolant outlet, and a second coolant outlet. The valve device may be configured to at least one of open and close at least one of the first coolant outlet and the second coolant outlet based on a selected operating point and a pressure in a coolant.

Abstract: A method of manufacturing a thermo valve includes an overlaying step of overlaying a valve body onto a thermo actuator so as to cover a groove portion; and a caulking step of caulking an installing portion of the valve body onto the thermo actuator. The caulking step is performed by pressing, by use of a jig, the valve body and the thermo actuator toward an axis center in a radial direction. A pressing face of the jig has a short side portion and a long side portion longer than the short side portion. Pressing is performed with the long side portion being substantially in parallel to the axis center of the thermo actuator and the short side portion being substantially in parallel to the groove portion.

Abstract: A valve includes an outer structure. The valve includes a hollow shaft that includes holes formed therein, the shaft disposed within the outer structure and translatable from a first position to a second position. A memory metal alloy (MMA) spring is coupled to the shaft and the outer structure, the MMA spring expanding and moving the shaft from the first position to the second position in response to a temperature of a fluid. A valve head is coupled to the shaft and adapted to be biased within the outer structure, the valve head closing a bypass inlet in the first position and allowing fluid to enter the bypass inlet in the second position, and transferring fluid from the bypass inlet into the hollow shaft so that the fluid can exit the valve via an outlet. A pressure relief mechanism may be included.

Abstract: A floating dock including a submersible platform including at least one buoyancy tank wherein the buoyancy tank has a plurality of compartments each of which has a permanently open vent through which water is freely flowable into and out of the compartment and an inlet which enables air to be expelled from the compartment into the atmosphere or enables compressed air to be supplied to the compartment via a non return valve which causes water within the tank to be forced out via the vent, thereby increasing the buoyancy of the tank. The vent does not have any valves associated with it and is permanently open to the sea. As a result the floating dry dock of the present invention may be lowered and raised faster than conventional dry docks which rely on valved vents to control entry and exit of water into and out of their buoyancy tanks.

Abstract: A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Abstract: A lubrication system includes an auxiliary lubricant tank 48, a supply conduit 58 extending from a source of lubricant 26 to the auxiliary lubricant tank. A reduced-G bypass line 108 branches from the conduit and enters the auxiliary tank at a first elevation E1. The system also includes an auxiliary tank discharge conduit 116, a portion of which resides within the tank. The resident portion has an opening 122 at least partially at a second elevation E2 higher than the first elevation.

Abstract: An adjustable automatic recirculation valve includes a valve body, a main valve disk, a bypass valve and a dynamic adjustment assembly. The main valve disk is positioned within the valve body and opens in response to fluid flow between a main inlet and a main outlet. The bypass valve controls the flow of fluid between the main inlet and the recirculating outlet. A dynamic adjustment assembly, housed within the valve body controls the operating lift associated with the maximum opening of the bypass valve to regulate fluid flow capacity to the recirculating outlet.

Abstract: A motor-operated valve which can control the flow rate at a high accuracy during a normal flow, and can pass the fluid so as to suppress pressure loss as much as possible during a reverse flow, and a refrigeration cycle using the same are provided. It is configured such that during a normal flow, the fluid is made to flow only from between the main valve body 24 and the orifice 22 to perform flow rate control, and during a reverse flow, all or a majority of the fluid is made to flow to a bypass channel 70 without being passed through the orifice 22a to decrease pressure loss as much as possible. To be more specific, a check valve body 60 which closes the bypass channel 70 during a normal flow and opens it during a reverse flow is provided in the valve main body 20.

Abstract: An adjustable automatic recirculation valve includes a valve body, a main valve disk, a bypass valve and a dynamic adjustment assembly. The main valve disk is positioned within the valve body and opens in response to fluid flow between a main inlet and a main outlet. The bypass valve controls the flow of fluid between the main inlet and the recirculating outlet. A dynamic adjustment assembly, housed within the valve body controls the operating lift associated with the maximum opening of the bypass valve to regulate fluid flow capacity to the recirculating outlet.

Abstract: An adjustable automatic recirculation valve includes a valve body, a main valve disk, a bypass valve and a dynamic adjustment assembly. The main valve disk is positioned within the valve body and opens in response to fluid flow between a main inlet and a main outlet. The bypass valve controls the flow of fluid between the main inlet and the recirculating outlet. A dynamic adjustment assembly, housed within the valve body controls the operating lift associated with the maximum opening of the bypass valve to regulate fluid flow capacity to the recirculating outlet.

Abstract: A spool bore (4) where a spool (6) slides, a concave portion (23) opened to the spool bore (4) and facing a return port 12 opened to the spool bore (4), and a land portion (11) disposed in an outer periphery of the spool (6) are provided. A width of the concave portion (23) and a width of the return port (12) each are greater than a width of the land portion (11) and a groove bottom (23a) of the concave portion (23) is formed to be a flat plane generally in proportion to an axis line of the spool (6).

Abstract: In a flow control apparatus, a fluid pressure is introduced from downstream of a metering orifice to a rear room of a spool while a relief valve in the spool is assembled in advance. A front section of a relief valve sub-assembly is press fitted to a hole provided on the spool and is opening to rear room of the spool so that a receiving room of a valve body in a relief valve casing communicates to a bypass path. A communicating path provided in a rod communicates to the rear room of the spool through outside of the relief valve sub-assembly. The relief valve casing is received in a receiving hole provided in the spool and a cylindrical room between the relief valve casing and the receiving room is used as a part of a communicating path.

Abstract: A flow regulator with pressure relief combination valve is disclosed which can include a housing and a valve assembly. The housing can have a chamber and four ports. A cage, having a plurality of cross holes, is supported by the housing. A hollow spool is slidably disposed within the cage and is biased to engage the cage. A shoulder of the cage and a counterbore of the spool cooperate to interferingly retain an insert. A poppet is slidably disposed inside of the cage. The valve assembly includes an adaptor, a spring disposed within the adaptor, a guide disposed between the spring and the poppet, and an adjuster adjustably secured to the adaptor. The spring is arranged to bias the poppet against a seat via the guide. The adjustor is movable to adjust the position of the spring.

Abstract: A proportional, pilot-operated flow control valve is disclosed which can include a cage, a hollow compensating spool slidably disposed within the cage, a hollow metering guide member slidably disposed within the compensating spool, a regulating spool slidably disposed within the guide member, a dampening guide slidably disposed inside the compensating spool to define a dampening chamber, a compensating spring disposed inside the dampening chamber and arranged to urge the dampening guide to engage the metering guide and the compensating spool to engage the cage, a regulating spring disposed inside the regulating spool and urging the regulating spool to abut the dampening guide, and a cartridge, the cartridge having a pilot valve assembly and an adaptor, the adaptor mounted to the cage, the pilot valve assembly mounted to the adaptor, the pilot valve assembly including an actuator.

Abstract: A fluid flow regulation system has an inlet, an outlet, and an adjustable flow regulator connected between the inlet and the outlet. The regulator has a closed position at which a leakage gas flow through the system is established. An extraction device is provided for fluid connection with one or both of the inlet and the outlet and is operable to extract fluid to provide a zero or negative flow from the outlet when the flow regulator is in the closed position.

Abstract: There is disclosed a method and a device to allow a “rigid” pig to pass into an undersea flow pipe in which a hollow flow-constricting device is in use. According to the invention the device is provided with a first pipe branch and a second pipe branch. The first pipe branch is provided with a hollow flow-constricting device in it and both first and second pipe branches are provided with shut-off valves, whereby the flow can be diverted to the second pipe branch thereby enabling a rigid pig to pass into such second pipe branch, when necessary.

Abstract: A method of determining flow through a valve includes determining a first differential pressure across the valve. The valve is bypassed and a second differential pressure is determined across the valve. A flow decision is determined for the valve based on comparison of the first and second differential pressures. A method of testing a relief valve in a reduced pressure backflow preventer assembly includes determining a first differential pressure across an upstream check valve during a no flow condition. The upstream check valve is bypassed for the purpose of opening a relief valve, and a zone vent is opened.

Abstract: To provide an outflow prevention device which is capable of preventing refrigerant from flowing out into a vehicle compartment even when an evaporator has ruptured.

Abstract: A down hole motor assembly includes a hydraulic drive portion, a drill bit operatively connected to the drive portion and a disengage mechanism (11) arranged to disengage drive to the drill bit. The disengage mechanism (11) is arranged to be actuated by supplying drilling fluid to the drive portion at a flow rate which is greater than the flow rate at which fluid is supplied to run the drive portion during normal drilling. The disengage mechanism is arranged to be re-set so that drive is reconnected to the drill bit when the fluid supply to the drive portion is shut off.

Abstract: A safety device (1) for a fluid transmission has a diaphragm (4) which is arranged deflectably in a feed passage (8) and which has at least one through opening (2) for the fluid. A return passage (10) for the fluid from the chamber of the consumer (9) is of such a configuration and arrangement that it can be opened and closed by deflection of the diaphragm (4), wherein the diaphragm (4) is of such a configuration that, when the fluid flow in the feed passage (8) falls below a given value, the return passage (10) is opened. The pressure in a pressure chamber (9) of a consumer can be let off by the device (1) when a pump (7) is no longer conveying.

Abstract: The invention relates to the sector of pressure-washing machines, in the form of a valve with by-pass function when the gun is closed, and allows reduction of the pressure inside the delivery duct during operation in by-pass mode. In particular this valve comprises an external housing (1) defining a chamber (2) provided with an inlet section (3), an outlet section (4) and a discharge section (5). It also comprises means (6) for shutting off the discharge section (5) or the outlet section (4), which are located inside the chamber (2) and actuated in a reciprocating manner by a difference in pressure and by resilient means (7) and provided with means (8) for communication between the inlet section (3) and the outlet section (5) operating during discharge of the flow through the discharge section (5).