Abstract: The invention relates to a composite component, in particular a valve (10), and to a method for producing the composite component.

Abstract: A valve proportioning assembly that incorporates a check valve assembly is improved in manufacture and assembly. The valve proportioning assembly includes a housing having a blind opening that receives a sub-assembly of two separate non-metallic components that mate via an interference fit or snap-fit together enclose the check valve assembly. The non-metallic components enclose the check valve assembly. It includes a spring and spring follower so that a sub-assembly is formed for insertion into a blind bore. This minimizes potential misassembly, provides for a wider array of design configurations, and offers the additional advantage of adding more complete informational indicia directly into the molded components.

Abstract: A suction valve assembly of a compressor includes: a piston disposed movable in a cylinder forming a compression chamber, having a suction passage for sucking a fluid and a valve seat formed at a front side thereof; a valve body contacted to the valve seat to open and close the fluid, of which a front side making a portion of the compression chamber is formed hermetical; a support rod inserted into a rear portion of the valve body and fixed at one side of the piston and supporting the valve body to be moved in a certain range; and a release preventing unit formed between the valve body and the support rod to prevent the valve body from releasing from the support rod. A guide groove inside a compression chamber is removed to prevent generation of a dead volume, thereby improving an efficiency of a compressor.

Abstract: A pump assembly flows pressurized engine oil to hydraulic injectors in a diesel engine. The assembly includes a high-pressure pump with a bored piston passage. The outer end of the piston bore is closed by a plug assembly pressed in the bore.

Abstract: A method of configuring a valve comprised of a valve seat, a valve stem, a valve guide, and a relief compression spring. The method comprises calculating a compression force required to move the valve stem relative to the valve seat, using that calculated force to move the valve guide into a desired position, then crimping the valve guide to the valve stem at that desired position. The method also comprises attaching a check compression spring to the valve stem at a location inside the valve guide, installing the valve in a test stand to measure the actual pressure required to achieve the desired rate of fluid flow and forming the valve seat using metal injection molding.

Abstract: An exemplary method for making a micropump device is disclosed as providing inter alia a substrate (300), an inlet opening (310), and outlet opening (340), a pump chamber (370) and flapper valves (350, 360). The fluid inlet channel (310) is generally configured to flow a fluid through/around the inlet opening flapper valve (350). The outlet opening flapper valve (360) generally provides means for preventing or otherwise decreasing the incidence of outlet fluid re-entering either the pumping cavity (370) and/or the fluid inlet channel (310). Accordingly, the reduction of backflow generally tends to enhance overall pumping efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application.

Abstract: A swing check valve for controlling fluid flow, including a valve housing having a port for fluid flow therethrough. A valve assembly is disposed within the valve housing for controlling the fluid flow therethrough, and includes a valve seat communicating with the port. A clapper is pivotally mounted in the valve housing and moves between open and closed positions. A lever arm is pivotally mounted on the rocker arm for providing leverage against the rocker arm for positioning the clapper and rocker arm within the valve housing. A spring is captured in the valve housing, and normally urges the clapper into the closed position. A first pivot is carried by the spring for permitting unattached pivotal movement of the spring relative to the cover. A second pivot is carried by the spring for permitting the spring to pivot within the valve housing responsive to movement of the clapper.

Abstract: A pressure valve, particularly for a reciprocating piston pump for conveying pressure fluid in slip-controlled hydraulic brake systems, wherein the pressure valve has a valve seat body and a valve cover body with a pre-tensioning element and a valve element installed in the space formed between the valve seat body and the cover body, which is particularly economical to manufacture, easy to install and particularly safe because of the valve seat body and the valve cover body being manufactured by non-cutting process.

Abstract: A double check valve reduced pressure backflow preventor assembly is configured to have a relatively small length, volume and/or weight. The assembly defines parallel, preferably coaxial, inlet and outlet directions. In one aspect, first and second check valves are at an angle, preferably of 90°, to the in-line axis and preferably intersect the in-line axis. In one aspect, a relief valve is positioned spaced from the in-line axis. First and second shutoff valves are enclosed in the same integral, unitary housing which encloses the check valves and, preferably, some or all of the relief valve. The shutoff valves are preferably positioned along the in-line axis.

Abstract: A fluid handling assembly that includes a modular strut removably secured to a valve that permits easy access to internal valve parts for repair and inspection.

Abstract: A check valve attached to an inner wall of a main body of a fuel tank ensures a sufficient seal of the main body from outside, without increasing the required number of parts. The check valve communicates with a fuel conduit of a fuel inlet pipe and functions to prevent liquid fuel and fuel vapor in the main body from flowing through the fuel inlet pipe and being released to the outside. The check valve is opened by a flow of fuel in the fuel inlet pipe and allows the flow of fuel to be introduced into the main body. The check valve includes a casing with a fuel outlet, a valve disc, and a fixation plate. The valve disc is movable between an open position and a closed position to open and close the fuel outlet of the casing. The fixation plate has one end inserted in an end of the casing and the other end welded to the main body. This arrangement enables the main body to be securely sealed from the outside.

Abstract: An inline check valve having a piston member and a seat in a valve body having a larger diameter at the end thereof away from the piston. The seat is retained within a groove by a seat retainer which prevents removal of the seat from the groove without deformation of the seat.

Abstract: A check valve plunger assembly for use in a fluid channel is provided. The check valve plunger assembly includes a check valve plunger having a first end, a second end, and a body portion. The body portion extends between the first and second end of the check valve plunger. The plunger assembly also includes an integral breakaway retention device having a ring shaped portion. The retention device is capable of being positioned around the check valve plunger such that the ring shaped portion surrounds at least a portion of the first end of the check valve plunger. Breakaway connectors are provided which connect the first end of the check valve plunger with the ring shaped portion of the retention device. After assembly, the check valve plunger is separated from the breakaway connectors and the plunger is able to freely move within the fluid channel. The present invention also provides a method of inserting this check valve plunger within the fluid channel.

Abstract: The invention is a bi-directional cleanout for pipelines such as sewer pipelines and a bi-directional cleanout with a built in backflow preventer. The backflow preventer is a check valve which allows fluid to flow in one direction, but not in the other direction. The bi-directional cleanout is a device which has a single access point at ground level, is located outside a house typically, and which directs a cleanout tool down one of two tool guide tubes. The guide tubes direct the cleanout tool into one of two tool guides which deflect the cleanout tool and cause it to enter the pipeline to be cleaned in a direction towards one or the other of the ends. The check valve is insertable into the pipe level unit in which the tool guides are located. While the pipeline is being cleaned out with the cleanout tool, the check valve can be removed and reinserted after the cleanout procedure is completed.