A ball valve structure includes a valve body having a valve chamber therein. A valve ball is accommodated in the valve chamber. The valve ball defines a flow hole therein. Two gaskets are in close contact with two opposite side surfaces of the valve ball, so that the valve ball can rotate around a fixed point in the valve chamber. One side of one of the two gaskets abuts against a washer and a compression spring, so that the gasket is elastically pressed against a surface of the valve ball. A valve stem is connected to the valve ball through the valve body for driving the valve ball to rotate, enabling the flow hole to be opened.

A housing has a housing main body that defines an internal space therein, an inlet port that fluidly connects the internal space and an outside of the housing main body to each other, and a relief port that fluidly connects the internal space and the outside of the housing main body to each other. Coolant water flows into the housing through the inlet port. A relief valve is disposed in the relief port and configured to selectively allow and block fluid communication between the internal space and the outside of the housing main body via the relief port by selectively opening and closing the relief port in accordance with conditions. A valve has a valve body rotatable about a rotation axis in the internal space, and a shaft disposed along the rotation axis. A covering portion is configured to cover the relief valve not to be visible through the inlet port.

A fluid mixing assembly (100) comprising a body (102) having a discharge outlet (114) for discharging fluid; a fluid mixing device (104) disposed in the body (102) and in fluid communication with the discharge outlet (114), the fluid mixing device (104) having an adjusting member (122) adjustable about a mixing adjusting axis (124) and configured to assist in controlling mixing of fluids in the fluid mixing device (104); a first isolator (132) in fluid communication with the fluid mixing device (104) and configured to be coupled in fluid communication to a first source of fluid, the first isolator (132) having an adjusting member (140) adjustable about a first isolator adjusting axis (138) and configured to control a flow of fluid through the first isolator (132); and a second isolator (144) in fluid communication with the fluid mixing device (104) and configured to be coupled in fluid communication to a second source of fluid, the second isolator (144) having an adjusting member (152) adjustable about a second isolator adjusting axis (150) and configured to control a flow of fluid through the second isolator (152). The first isolator (132) and the second isolator (144) are disposed relative to the fluid mixing device (104) such that the mixing adjusting axis (124), the first isolator adjusting axis (138), and the second isolator adjusting axis (150) extend substantially in a common direction.

A modular valve system having fixed valve ports with frame openings on the exterior of each port. Corresponding connectors or plugs are designed to fit within the valve ports and be locked in place by a clip passing through the framed openings and around the connector or plug. The internal valve component may be electrically or mechanically controlled. The modular valve system may be connected to a vehicle coolant system to control fluid flow to a heat exchanger or bypassing the heat exchanger.

Illustrative embodiments of a meter box and couplings, either separately or in combination, are provided. An illustrative embodiment provides a valve coupling that is disposed through a wall of the meter box such that a first portion of the valve coupling extends exterior of the meter box and a second portion of the valve coupling extends interior of the meter box. An outlet coupling is disposed through the wall of the meter box such that a first portion of the outlet coupling extends exterior of the meter box and a second portion of the outlet coupling extends interior of the meter box. A telescoping tube is located in the meter box, extended into and movable relative to, and in fluid communication with, at least one of the second portion of the valve coupling and/or the second portion of the outlet coupling. The telescoping tube varies a distance between the valve coupling and the outlet coupling within the meter box.

A valve (10) in accordance with an embodiment of the present invention includes a body (1) having a space in which a stem (3) and a ball (4) are housed, wherein an inner lid body (60) fixing the ball (4) in the space liquid-tightly partitions the space into a part in which the stem (3) is housed and a part in which the ball (4) is housed.

A heated water valve provides electrical resistance heaters placed within flange connections of the valve to provide for an integrated heater valve assembly with good heat conduction and spreading capabilities that can prevent water valve freezing at low temperatures.

In the transportation of hydrogen using pipelines, existing oil and natural gas pipelines can be retrofitted with inner tubes defining an inter-space between the outer surface of the inner tubes and the pipelines, and providing a fluid at in the inter-space at a higher pressure than that of the hydrogen in carried in inner tube.

Integrated flow meter and control valve (1) including a flow tube (11); a substantially watertight meter housing (12) providing a compartment (121), extending from the flow tube; a metering unit (139 arranged inside the compartment for measuring the flow of a medium flowing though the flow channel, and an electrical valve actuator (18) arranged inside the compartment and adapted to control a flow control element (19) arranged inside the flow channel, wherein that meter housing is formed as an integrated part of the flow tube with the compartment having a primary opening (124) for insertion of the metering unit and a secondary sealable opening (125) for insertion of the electrical valve actuator.

A two-piece valve shell (body and bolted-on top bonnet having external fins to dissipate heat) structure reduces possible leakage paths while also providing a top-side ball/stem installation/removal path (when the bonnet piece is not present) to facilitate initial valve assembly as well as subsequent inspection/removal of the ball/stem and other valve internals for conducting valve maintenance without requiring the valve body to be removed from its process connections. In some implementations, a second/bottom bonnet is also attached to the body such that it covers another opening to the ball cavity.