Refrigerant charging systems and methods of use are described herein. A refrigerant charging system may include a conduit, a valve releasably connectable to the outlet portion and coupled to a first end of the conduit; and a disconnect coupler fitting connected to a second end of the conduit. The disconnect coupler fitting may include a control structure positioned in a hollow body that, during use, allows refrigerant flow to the refrigerant circuit. The control structure may include one or more openings that allow controlled leakage of fluid from the refrigerant charging assembly when the refrigerant charging assembly is disconnected from at least the refrigerant service unit.

A flow control structure of a water hose joint has: a hose connector, a coupler, a control section, and a hose. The coupler is coupled with the hose connector, the control section is sleeved on the coupler, and the coupler is inserted into the hose, so as to complete a flow control structure of the hose connector. By combining the hose connector with a connecting pipe and rotating the control section to adjust the relative position of the control section and the coupler to change the water flow, which has the effect of simple flow adjustment.

Aspects of the present disclosure relate to connection blocks and pump manifold systems, and related methods, for pumping operations (such as frac operations). In one implementation, a connection block for disposition along a pump manifold of a pump system includes a first end hub having a first tube and a first outer shoulder extending outwardly relative to the first tube. The connection block includes a second end hub opposing the first end hub. The second end hub has a second tube and a second outer shoulder extending outwardly relative to the second tube. The connection block includes one or more faces between the first end hub and the second end hub.

An ejector joint structure includes first and second connection members and an ejector. The first connection member has a head portion, a body portion, and a defined-through first channel. The first channel has a stepped portion and forms a thick section and a thin section. The body portion has a through-hole communicating with the thin section. The ejector is movably threaded in the first channel via an abutting rod. The abutting rod has a flange corresponding to the thick section and selectively abutted against the stepped portion to shield the first channel. The second connection member has a sleeve to enclose an outer periphery of the first connection member, and the second connection member is rotatable relative to the first connection member. The sleeve has a second channel communicating with the hollowed space. A sealing member is assembled between the sleeve and the body portion to seal the hollowed space.

A separator device for removing particles from suspension in a liquid includes a housing having first and second chambers with apertures for ingress and egress of liquid into the first chamber. Means are provided for setting up a swirl of liquid within the first chamber. Apertures enable flow of liquid between the first chamber and the second chamber. Means are also provided for setting up a swirl of liquid within the second chamber. The swirl in the second chamber is in substantially the opposite direction to the swirl in the first chamber, and there is no substantial flow in the second chamber which is in the same direction as the swirl in the first chamber.

An adjustable valved coupler for drip irrigation line includes a valve body having a first end connected to a selector switch assembly and a second end having multiple outlets of differing sizes positioned eccentrically about the perimeter of the second end. The selector switch assembly has an inlet cap defining a main port for connecting an upstream feeder line to an internal volume of the valve body, a manually operable dial, and a circular seat mechanically linked to the dial by a shaft. The circular seat defines an eccentrically positioned aperture. Rotation of the dial moves the aperture into and out of alignment with the outlets to adjust flow rate. The selector switch assembly may also include an exit port to allow serial coupling to a downstream feeder line.

A coupler for aseptically coupling and controlling fluid communication between at least two components. The coupler includes a first connector housing with an inner concave surface. A first connector extends from the top of the first connector housing and is adapted to connect to a first component. A first connector conduit extends through the first connector and into the first connector housing so as to define a fluid passageway to an inner opening on the inner surface of the first connector housing. A rotary valve is located within an inner cavity of the first connector housing and includes at least two rotary valve segments. The rotary valve segments are configured to rotate within the cavity. At least one of the rotary valve segments includes a fluid conduit extending through the at least one rotary valve segment.

A fuel tank fueling portion structure includes: a fueling pipe that is in fluid communication with a fuel tank, the fueling pipe being provided with a fueling opening; a lid that is openably and closably provided at a vehicle body, the lid in a closed state covering the fueling opening from a vehicle body outer side; an on-off valve that is provided at a flow channel inside the fueling pipe and closes off the flow channel, the on-off valve opening up the flow channel when pressed by the fueling nozzle; and a valve retention device that is provided in the fueling pipe, the valve retention device retaining an open state of the on-off valve that has been opened by pressing from the fueling nozzle, and releasing the retention of the open state of the on-off valve when the lid goes into a closed state.

A separator device 10 for removing particles from suspension in a fluid including a housing 12, having first and second apertures 96 for ingress and egress of fluid into and out of the housing 12; a first separator chamber 38 disposed at one end of the housing; a second separator chamber 40 disposed at the other end of the housing, and a central chamber disposed between the first and second separator chambers 38, 40, the first and second separator chambers 38, 40 being apertured for ingress and egress of fluid from the central chamber and each containing obstruction means to slow the flow of fluid within the chamber.