An autonomous flow control device with pilot amplification includes a primary valve responsive to changes in fluid composition, and a pilot valve responsive to and more sensitive to changes in fluid composition than the primary valve and configured to aid change in position of the primary valve in the event of a change in fluid composition

A flow rate regulator s provided that decouples regions (7) of a regulating body (2) of a flow rate regulator (1) such that one of the decoupled regions (7) forms a low-pressure region (9) while another of the decoupled regions (7) defines a high-pressure region (8).

A passive thermal control valve comprising a thermal actuator coupled to a valve body having first and second ports. The thermal actuator including an actuator body having an inner bore. An adjustment stop engages the actuator body. A cylinder is received within the actuator body inner bore and the cylinder has a cylinder bore open at one end. An actuator spring within the actuator body biases the cylinder towards the adjustment stop. An actuator rod is at least partially received within the cylinder and has first and second ends. At least a portion of the actuator rod is allowed to extend through the open cylinder bore. A sealing element forms a seal between the actuator rod and the cylinder and defines a sealed chamber within the cylinder. A thermal fluid is contained within the cylinder. A lever mechanism is connected to the valve body and includes a lever having a first end connected to the valve body. A valve spool is connected to a lever second end. The valve spool is arranged and designed to close the first port and allow a system fluid to flow through the second port, close the second port and allow the system fluid to flow through the first port, or allow the system fluid to flow through both the first and second ports.

A gas dosing apparatus is provided that includes an inlet configured to receive gas, and a directional control valve connected to the inlet and having a first position and a second position. The gas dosing apparatus also includes a fixed volume reservoir connected to the directional control valve and receiving gas from the inlet, via the directional control valve, while the directional control valve is in the first position. The gas dosing apparatus further includes an outlet connected to the directional control valve and outputting a gas dose received from the fixed volume reservoir, via the directional control valve, while the directional control valve is in the second position.

A damper including inner and outer tubes and a control valve. A piston is slidably disposed within the inner tube to define first and second working chambers. An intermediate member assembly is disposed annularly about the inner tube. An intermediate channel is positioned radially between the intermediate member assembly and the inner tube and a reservoir channel is positioned radially between the intermediate member assembly and the outer tube. A first unidirectional blocking valve forms a first partition between first and second intermediate channel portions of the intermediate channel. A second unidirectional blocking valve forms a second partition between the second intermediate channel portion and a third intermediate channel portion. An external control valve has a control valve inlet that is arranged in fluid communication with the second intermediate channel portion.

A fluid-conveying device for conveying a fluid, such as in particular water, from a tank. The fluid can be conveyed along a dosing line to an injection point by a pump, wherein the dosing line is attached at a pressure side of the pump by a connection plug which is attached to an outlet line. The fluid-conveying device has at least one first valve, which is preloaded by a spring and which is configured to prevent a fluid flow from the dosing line to the outlet line and which is furthermore configured to permit the fluid flow from the outlet line to the dosing line if a predefined minimum pressure p1 is reached on that side of the first valve which faces toward the outlet opening.

A fluid-conveying device for conveying a fluid, such as in particular water, from a tank. The fluid can be conveyed along a dosing line to an injection point by a pump, wherein the dosing line is attached at a pressure side of the pump by a connection plug which is attached to an outlet line. The fluid-conveying device has at least one first valve, which is preloaded by a spring and which is configured to prevent a fluid flow from the dosing line to the outlet line and which is furthermore configured to permit the fluid flow from the outlet line to the dosing line if a predefined minimum pressure p1 is reached on that side of the first valve which faces toward the outlet opening.

The present invention provides a cold water discharge structure, which pertains to the technical field of shower equipment. It solves the problem of inconvenient use of existing cold water discharge device. The cold water discharge structure comprises a housing having an inlet and an outlet, a lateral part of the housing has a drainage hole capable of communicating with the inlet; a temperature sensing component is capable of moving under an elasticity effect of the elastic element to block communication between the inlet and the outlet and capable of communicating the inlet with the drainage hole; a temperature sensing component is capable of moving by overcoming an elasticity effect of the elastic element after sensing an increase in a medium temperature to block communication between the inlet and the drainage hole and capable of communicating the inlet with the outlet. The cold water discharge structure improves convenience of use.

The present invention provides a cold water discharge structure, which pertains to the technical field of shower equipment. It solves the problem of inconvenient use of existing cold water discharge device. The cold water discharge structure comprises a housing having an inlet and an outlet, a lateral part of the housing has a drainage hole capable of communicating with the inlet; a temperature sensing component is capable of moving under an elasticity effect of the elastic element to block communication between the inlet and the outlet and capable of communicating the inlet with the drainage hole; a temperature sensing component is capable of moving by overcoming an elasticity effect of the elastic element after sensing an increase in a medium temperature to block communication between the inlet and the drainage hole and capable of communicating the inlet with the outlet. The cold water discharge structure improves convenience of use.

A flow resistance insert of a flow rate measuring or flow rate control has contiguous discs between which at least one central axial flow duct is formed from which radial flow ducts branch off. The discs include alternating first discs and second discs. While the first discs are circumferentially closed ring discs, the second discs are circumferentially slotted one-piece ring discs.