A thermal relief valve, comprising a housing having a channel, a first aperture, and a second aperture, wherein the first aperture and the second aperture are arranged symmetrically about a central axis, an actuator within the housing arranged about the axis, a first seal secured to the actuator, the first seal comprising a plurality of apertures, and having a first upwardly facing surface, and a second downwardly facing surface, a first spring arranged between the second surface of the first seal and the housing component, a second seal comprising a first upwardly facing surface and a second downwardly facing surface, the first surface of the second seal positioned on the second surface of the first seal and, a second spring arranged between the second surface of the second seal and the housing, wherein the first seal and the second seal are axially movable by the actuator along the central axis.

A fluid supply assembly having a conduit through which a fluid may be supplied. A thermal shut-off may be provided to control the supply of fluid through the conduit in response to an environmental temperature condition.

Disclosed herein is a fail-safe coolant control valve. The fail-safe coolant control valve includes a valve housing, a valve member, an actuator, and a fail-safe unit. The valve housing is provided on an outer surface thereof with at least two ports. The valve housing has therein an internal space communicating with the ports. The valve member is rotatably installed in the internal space of the valve housing and rotates via an actuator. The fail-safe unit rotates the valve member depending on a temperature of a coolant in the valve housing when a failure occurs.

Disclosed is a transmission oil bypass assembly including: a body formed in a pipe shape such that a first longitudinal side of the body is inserted into a first heat exchanger for heat exchange of transmission oil, with a bypass passage provided at a second longitudinal side of the body by protruding outside the first heat exchanger, and openings formed on a side wall of the body to allow the transmission oil to be introduced therethrough; a returning pipe configured to return the transmission oil introduced through the body to the transmission; a thermal expansion unit inserted into the body; a returning-side on/off valve configured to close an internal passage of the returning pipe when a length of the thermal expansion unit is increased; and a bypass-side on/off valve configured to close the bypass passage when the length of the thermal expansion unit is decreased.

A domestic pipe system for delivery of hot water includes hot water source (10) and a piping to a faucet (12). The piping comprises a splitter (14), two pipes (20, 22) and a controller (16), the controller having a housing, first and second inlets (24, 26), an outlet (28), and a thermally actuated valve. The first inlet is a permanently open inlet whereas the second inlet is opened depending on the temperature of water arriving at the controller. Stagnant water that cooled down only runs through the first pipe (20) until the temperature exceeds a preset threshold. Than the controller (16) opens the second inlet such that the stagnant cold water from the second pipe can be mixed gradually with the hot water from the first pipe. Thus, the user receives warm water earlier than if both pipes need to be emptied.

A fluid valve use in a turbomachine in a high temperature location includes a fluid inlet, a fluid outlet, a fluid circuit defined between the fluid inlet and the fluid outlet, and a solenoid including a solenoid casing. The solenoid is disposed between the fluid inlet and fluid outlet. The solenoid is configured to move a valve member between a closed position, at least one partially open position (e.g., any number of suitable positions), and a fully open position to selectively meter fluid flow through the fluid circuit. The fluid valve can include a valve casing, wherein the solenoid and valve member are disposed in the valve casing.

In a valve having a body with a sealed working fluid chamber, a bore and a valved fluid chamber, the valved fluid chamber having an inlet and outlet and a seat between the inlet and the outlet, a piston for extending through the bore from the working fluid chamber to the valved fluid chamber, a spring for biasing the piston away from the seat and a working fluid for receipt in the working fluid chamber. Applicant provides an improvement comprising a seal stack assembly for entrainment, under compression, upon the piston and in the piston chamber between a working fluid chamber end wall and a first end of the piston, wherein the first end of the piston is located in the working fluid chamber and a second end in the valved fluid chamber.

Disclosed is a method for determining the degree of wear of a valve, the degree of wear of the valve being dependent on the degree of wear of an operating element that is made of an expandable material and performs a mechanical movement each time the temperature changes, the change in temperature resulting in wear, the operating element made of an expandable material being mechanically connected to a piston; the movements of the operating element (3) made of an expandable material are calculated by initially sensing the change in temperature on the operating element (3), whereupon the changes in temperature are recalculated as movements on the basis of the temperature/expansion curve applicable to the operating element (3) made of an expandable material.

A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time.

An internal combustion engine cooling device includes a piston fixedly mounted within a device housing coupled to a plurality of flow paths through which cooling water flows, the piston disposed facing the interior of the device housing; a cylinder container that advances and retreats relative to the piston and has a flange valve that opens and closes a main flow path of the cooling water; a thermal expansion unit provided within the cylinder container that causes the cylinder container to advance and retreat due to volumetric changes attendant upon temperature changes; and a heat-emitting element provided within a piston casing that heats the thermal expansion unit when supplied with electricity. An insulating cover is provided to the exterior of the cylinder container at a portion of the cylinder container disposed facing the cooling water.