Disclosed is a thermostatic valve, including: a pressure relief ring capable of moving up and down and disposed in a valve body cavity. In normal conditions, the pressure relief ring is abutted against the outer edge of a first valve seat by means of a spring. An internal channel capable of being opened or closed by means of up and down movement of the pressure relief ring is further provided in the valve body cavity; when the pressure of a fluid in the thermostatic valve is excessive, the fluid can drive the pressure relief ring to compress the spring, such that the internal channel is in communication with a third interface to realize simultaneous communication with a first flow channel and a third flow channel, and thus damages caused by excessive pressure of the fluid in the temperature regulating valve can be prevented.

A fluid valve is provided including an inner shell and an outer shell. The inner shell includes a sidewall having a first opening and an interior surface defining an inner chamber. The outer shell includes a sidewall having a second opening and an exterior surface defining an outer chamber. The inner shell is positioned within the outer shell and the inner shell is movable relative to the outer chamber between a first position and a second position by a change in fluid conditions of a fluid supplied to the fluid valve. The first opening and the second opening overlap to define a passageway extending from the interior surface of the inner shell to the exterior surface of the outer shell. Relative movement of the inner shell from the first position toward the second position reduces a cross-sectional area of the passageway.

Devices, systems, and techniques relating to steam trap monitoring are described. These include battery-less steam trap monitors that run on power harvested from their environments, systems for acquiring steam trap monitor data for the traps in a facility or across multiple facilities, and techniques for processing steam trap monitor data to reliably determine the status of individual steam traps and potentially other system parameters.

A valve for a vehicle may include a housing including a first inflow hole, a second inflow hole, a first exhaust hole, and a second exhaust hole, an inner body inserted in the housing and having a fixing groove, a fixing rod fixed to the fixing groove, a movable member slidably engaged to the lower end portion of the fixing rod to upwardly or downwardly move along the fixing rod according to a temperature of the transmission oil being flowed in the inside of the housing, a relief member including a penetration hole, wherein the lower end portion of the movable member is selectively movable therein, and slidably mounted in the lower end portion of the inner body, a first elastic member interposed between the movable member and the relief member, and a second elastic member interposed between the inner body and the relief member.

Devices, systems, and techniques relating to steam trap monitoring are described. These include battery-less steam trap monitors that run on power harvested from their environments, systems for acquiring steam trap monitor data for the traps in a facility or across multiple facilities, and techniques for processing steam trap monitor data to reliably determine the status of individual steam traps and potentially other system parameters.