A valve comprising two rotors, each rotor comprising two passageways and two or more sealing faces. The valve allows for controlling air flow between six directions. The valve can operate in a number of operation modes depending on a position of the rotors. The valve design can include a valve-housing with six ports. Two rotary valves provide a plurality of predetermined flow modes between the six ports.

A valve comprising two rotors, each rotor comprising two passageways and two or more sealing faces. The valve allows for controlling air flow between six directions. The valve can operate in a number of operation modes depending on a position of the rotors. The valve design can include a valve-housing with six ports. Two rotary valves provide a plurality of predetermined flow modes between the six ports.

A method of decreasing tire pressure includes opening a wheel valve (22) to allow pressurized air from a tire (10) to be directed to a first valve assembly (14) and to atmosphere. A target pressure is selected for a fluid control conduit (28). The fluid conduit (28) is in fluid communication with the first valve assembly (14) and a second or control valve assembly (30). The pressure in the fluid conduit (28) is measured. If the measured pressure is greater than the target pressure, then the second valve assembly (30) is de-energized. If the measured pressure is less than the target pressure, then the second valve assembly (30) is energized. A valve (42) prone to leak under very low temperatures may be subjected to repeated cycles of pressure application and pressure release in order to form a fluid-tight seal.

A method of decreasing tire pressure includes opening a wheel valve (22) to allow pressurized air from a tire (10) to be directed to a first valve assembly (14) and to atmosphere. A target pressure is selected for a fluid control conduit (28). The fluid conduit (28) is in fluid communication with the first valve assembly (14) and a second or control valve assembly (30). The pressure in the fluid conduit (28) is measured. If the measured pressure is greater than the target pressure, then the second valve assembly (30) is de-energized. If the measured pressure is less than the target pressure, then the second valve assembly (30) is energized. A valve (42) prone to leak under very low temperatures may be subjected to repeated cycles of pressure application and pressure release in order to form a fluid-tight seal.

A cartridge has a base, a slide, a thermostatic actuator, a cover, and a regulation and control system. A mixing chamber has base in an assembled state has two superimposed base parts which, in an assembled state, are superimposed one against the other along an axis with an interpositioned seal. The slide is movable in the chamber to inversely vary the flow sections of two passages, supplied through the two base parts and delimited axially between the slide and the two base parts. The thermostatic actuator in the chamber moves the slide to a regulation position as a function of the temperature of the mixture exiting the chamber. The cover is secured to the base in the assembled cartridge.

A cartridge has a base, a slide, a thermostatic actuator, a cover, and a regulation and control system. A mixing chamber has base in an assembled state has two superimposed base parts which, in an assembled state, are superimposed one against the other along an axis with an interpositioned seal. The slide is movable in the chamber to inversely vary the flow sections of two passages, supplied through the two base parts and delimited axially between the slide and the two base parts. The thermostatic actuator in the chamber moves the slide to a regulation position as a function of the temperature of the mixture exiting the chamber. The cover is secured to the base in the assembled cartridge.

An apparatus for distributing gases and, optionally, liquids into a control valve includes a collar and a plurality of gas distribution devices. The collar includes a first side, a second side opposite the first side, an inner bore formed through a central portion of the first side and the second side, an outer edge positioned between the first side and the second side and which defines an outer perimeter of the collar, an inner edge positioned between the first side and the second side and which extends around the inner bore to define an inside perimeter of the collar, and a plurality of passages that extend through the outer edge and inner edge without penetrating the first and second sides. The plurality of gas distribution devices are mounted into the passages of the collar.

A humanized switching device includes a tee pipe and a switching lever. The tee pipe has a switching chamber therein. The switching chamber is formed with a water inlet and a plurality of water outlets. The switching lever is provided with a water-stop part. The switching lever is movable to change the position of the water-stop part between the water inlet and the water outlets to realize the switching of the water passage.

Disclosed is a faucet valve including: a first valve body including a first slide surface, and formed from an alumina-based sintered body; and a second valve body including a second slide surface, and formed from an alumina-based sintered body, the first and second slide surfaces at least partially being in contact with each other with water in between. At least part of the second slide body is formed from a first amorphous carbon layer. The hardness of the first amorphous carbon layer is equal to or less than that of the alumina-based sintered body forming the first valve body. In the first amorphous carbon layer, a ratio (ID/IG) of a D peak to a G peak, measured by Raman spectroscopy, is greater than 0.5 but less than 1.9.

Disclosed is a faucet valve including: a first valve body including a first slide surface, and formed from an alumina-based sintered body; and a second valve body including a second slide surface, and formed from an alumina-based sintered body, the first and second slide surfaces at least partially being in contact with each other with water in between. At least part of the second slide body is formed from a first amorphous carbon layer. The hardness of the first amorphous carbon layer is equal to or less than that of the alumina-based sintered body forming the first valve body. In the first amorphous carbon layer, a ratio (ID/IG) of a D peak to a G peak, measured by Raman spectroscopy, is greater than 0.5 but less than 1.9.