A valve assembly and an ink cartridge with the valve assembly are provided. The valve assembly includes a valve cover, a valve base, a diaphragm and a transfer column. The valve cover is disposed on the valve base to define a valve cavity, and the diaphragm is disposed between the valve cover and the valve base and configured for separating the valve cavity into a first deformable cavity and a second deformable cavity independent with each other. The transfer column is fixed in the valve cavity and penetrates through the diaphragm, and at least one of the transfer column and the diaphragm is provided with a passage. The diaphragm moves relative to the transfer column due to a pressure difference between the first deformable cavity and the second deformable cavity, resulting in opening or cutting off communication between the first deformable cavity and the second deformable cavity by the passage.

A non-return insert valve (100) for a fluid circuit, in particular of a vehicle, this valve (100) being configured to be inserted into a pipe (12) and comprising: a tubular body (102), a ring (104) comprising guides (140), a piston (106) configured to slidingly cooperate with said guides (140) and carrying a seal (146), and an elastically deformable member (108) for biasing said seal (146) in axial support against a seat (124) of the tubular body (102), said piston (106) comprising at its external periphery lugs (166) which are configured to be supported axially against an internal cylindrical shoulder (126) of said body (102), in order to precisely define a first position of the piston, the fluid being intended to flow between these lugs (166) when the piston (106) is in a second position.

A fluidic connection device (10) for a fluid circuit, in particular of a vehicle, this device comprising: a first pipe (12), a tubular end-piece engaged in the first pipe (12), a first flange (16) mounted around the first pipe (12), a second flange (18) mounted around the end-piece, at least one element (20) for attaching the first and second flanges (16, 18) one against the other, and a non-return insert valve (100) mounted within the first pipe (12).

A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing made of multiple-piece construction. One or more pieces of the housing are configured to have a plurality of stay rods attached thereto. The stay rods interconnect the fluid end assembly and a power end assembly.

A reject valve of a reverse osmosis device, which is especially suited for brackish water reverse osmosis devices, which require a low system pressure less than 15bar. The valve keeps the system pressure substantially constant in a pre-defined range of the reject volume. The size of the inflow channel is adjusted by a spring-operated cone, which never entirely closes the channel, which forms a constant throttle until the pressure of the inflow has risen to approximately three quarters of the pressure arranged by the spring and prevailing at maximum volume of the reject flow. This operation is arranged structurally such that onto the shaft of the cone is fixedly supported a transverse plate abutting the inner wall of the body, which as pressed by the compression spring is supported by the end of an element connected to the end of the body, wherein the cone is in its lowest position.

A piston valve includes a body, a valve seat, an obturator in the form of a piston and a return spring. The body includes an envelope provided with at least one outlet orifice for the pressurised fluid, and an interior element that is attached in the envelope. The interior of the body carries the valve seat and provides the translational guidance of the obturator in the body. Furthermore, the interior element includes at least one window configured to guide the fluid from the valve seat towards the outlet orifice.

A high pressure pump. The pump comprises a fluid end assembly supported on a power end assembly. The power end assembly is modular and held together by a first set of stay rods. The fluid end assembly comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing made of multiple-piece construction. One or more pieces of the housing are configured to having a second set of stay rods attached thereto. The second set of stay rods interconnect the fluid end assembly and a power end assembly and a vertically offset from the first set of stay rods.

Embodiments presented provide for a fluid end that has cartridge style check valves that may be serviced through a vertical bore.

A check valve is provided in a refrigerant piping line of a refrigerant piping system to restrict a flow direction of refrigerant. The check value includes a valve body movably disposed inside the refrigerant piping line in a longitudinal direction of the refrigerant piping line, a stopper coupled to a rear end of the valve body to limit a movement of the valve body, and an elastic member disposed between the valve body and the stopper and providing an elastic force to the valve body. The valve body may have at least one locking protrusion formed at the rear end thereof, and the stopper may have a corresponding locking slit. The locking protrusion may pass through the locking slit and then rotate relatively whereby the stopper can be fixed to the valve body.

An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.