A multi-port rotary plug valve may be used in a fluid delivery system of a vehicle to control flow of coolant fluid between a radiator, an electric drive motor, a battery, vehicle electronics, and one or more bypass lines. The valve may include a valve body that has radial ports at two or more levels along a height dimension of the valve body. In addition, the valve may include a plug assembly that is rotatably disposed in the valve body. The plug assembly may be made of first and second plug portions that cooperate to control fluid flow through the valve body. The valve allows valve configurations in which fluid passes between ports disposed at different axial levels of the valve body, and other configurations in which fluid passage is restricted to a single level depending on a rotational position of the plug assembly relative to the valve body.

A medical endoscope is an instrument having an elongate, tubular shaft. The instrument is commonly provided with a flushing device. The flushing liquid can be guided through corresponding separate liquid channels. In order to be able to control the flow of the liquid, the liquid channels have a stopcock. The stopcocks here are of complex construction, and for this reason both the production thereof and the cleaning thereof are complicated. The invention includes a stopcock and also a housing and a method for producing the housing, by way of which the production and the cleaning of the housing are simplified. This is achieved in that a housing and at least one spring element for form-fitting fixing of a plug in a position in the interior space of the housing are manufactured integrally from a single part, that is to say in one part.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

A dual-fuel integrated switch includes a bracket. A valve body is provided on one side of the bracket. The inside of the valve body is provided with a spool adapted to the valve body. The spool rotates in the valve body. The first flow passage and the second flow passage communicating with the first flow passage are provided in the spool, an arc-shaped groove is provided on the outer wall of the spool, and the third flow passage adapted to the groove is provided on the side wall of the valve body. The number of the third flow passages is two, and the arc formed by the third flow passage on the side wall of the valve body is the same as the arc at the outer end of the side wall of the groove.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

A fluid valve comprises a valve housing having at least one fluid inlet and at least one fluid outlet and having a valve axis. At least one of the inlet and outlet is arranged in a wall extending circumferentially about the valve axis. The valve further comprises a rotary valve body arranged within the valve housing for rotation about the valve axis. The rotary valve body comprises a frusto-conical valve body wall and at least one inlet or outlet valve body opening through the valve body wall, the valve body being rotatable about the valve axis so as selectively to place the valve housing inlet and valve housing outlet into fluid communication via the at least one valve body opening. The at least one inlet or outlet valve body opening is a slot which extends in the direction of the valve axis.

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.

A multi-gas-source heater is disclosed including a main shell, an ignition apparatus, a pipeline system arranged on the main shell, a temperature-sensing valve, a burner and a switching valve; the pipeline system has a first and second communication states; the temperature-sensing valve is connected to the pipeline system and can regulate flow of output gas; the burner includes a first and second nozzles both connected to the pipeline system; the ignition apparatus is connected to and can ignite the burner; the switching valve is connected to and can switch the pipeline system between the first and second communication states; when the switching valve switches the pipeline system to the first communication state, the first nozzle outputs the gas; when the switching valve switches the pipeline system to the second communication state, the second nozzle outputs the gas, or the first and second nozzles both output the gas.

A medical endoscope is an instrument having an elongate, tubular shaft. The instrument is commonly provided with a flushing device. The flushing liquid can be guided through corresponding separate liquid channels. In order to be able to control the flow of the liquid, the liquid channels have a stopcock. The stopcocks here are of complex construction, and for this reason both the production thereof and the cleaning thereof are complicated. The invention includes a stopcock and also a housing and a method for producing the housing, by way of which the production and the cleaning of the housing are simplified. This is achieved in that a housing and at least one spring element for form-fitting fixing of a plug in a position in the interior space of the housing are manufactured integrally from a single part, that is to say in one part.

A rotary valve 1 comprising a stator 3 and a rotor 5, wherein the stator comprises a plurality of connection ports (17a-17l) and orifices (19a-19l) and the rotor comprises a plurality of pairs of rotor valve orifices (23a-23h) joined by transfer channels (25a-25d). The rotor is able to be placed in different working positions whereby fluids can be fed to, for example, chromatography columns and/or can be bypassed through or around the valve. The invention also relates to a system comprising two components such as chromatography columns and a rotary valve.