A method and apparatus for a manual gas valve. The manual gas valve may include at least one internal spring and a valve plug. The internal spring may be independent from an external spring and a valve stem. The internal spring may be positioned in a constant installed height. The internal spring includes a constant spring force applied to the valve plug. The one or more manual gas valves may be used in a variety of applications.

A one-way plug includes a housing including a plate, an upper stopper having an overlap part extending downward from a side of the plate, and a lower body having a sealing surface part formed to extend in a cylindrical shape with a hollow downward from the plate, and a valve body provided in the hollow of the lower body and configured to cover the hollow, and having a wing part elastically deformed and configured to open the hollow.

A barrel valve assembly for a fluid distribution manifold. A barrel valve body has an off-axis passage with substantially linear walls therethrough, allowing for a substantially linear relationship between fluid flow through the body and angular rotation of the barrel valve within the manifold. The barrel valve thus requires a smaller working environment for the valve assembly, providing benefits in terms of assembly size and weight.

A closure element for a fluid end assembly that has two or more recessed grooves formed in its outer surface. The grooves are axially offset. A seal is placed in one and only one of the grooves. As wear occurs, the seal is relocated to one of the other grooves. Instead of a series of axially offset grooves in a single closure element, a kit may be formed from two or more otherwise identical closure elements, each with a single recessed groove at a different axial position. Another closure element has a series of ledge-like surfaces defining spaces within which a seal may be received. One outer surface surrounds one or more of the other surfaces. A seal is placed in one and only one of the spaces. As wear occurs, the seal is relocated to one of the other spaces.

Embodiments of the invention provide a coupler for use in a closed transfer system configured to selectively engage a container seated in fluid communication with the coupler. The coupler has a body with a slot having an axial component, and an outlet. A probe extends from a first end portion to a second end portion and is at least partially received within the body, the probe is configured to be movable relative to the body between a first position and a second position to selectively control a flow of fluid through the outlet. A probe tip with a cylindrical bore is configured to engage the second end portion of the probe, and a handle is coupled to the probe and configured to interface with the slot. Axial movement of the handle along the slot moves the probe between the first position and the second position.

A sleeve for a valve assembly has an inside surface having an interior area and a first cylindrical section extending from a first axial end and a second cylindrical section located between the first cylindrical section and second axial end. A conical interior seating surface extends between the first and second cylindrical sections. The conical interior seating surface is metallic. The sleeve includes a groove that extends circumferentially around and radially outward in the first cylindrical section. The groove extends axially away from the conical interior seating surface towards the first axial end. The sleeve has one or more ports extending radially through the first cylindrical section proximate the groove and are spaced apart from the groove by a lip formed by the first cylindrical section. The lip extends a predetermined axial distance between the groove and the port. The lip extends around the first cylindrical section and radially inward.

Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a recess in the body intersecting the body bore. A closure is joined to the body and forms a sealing surface. A seal is mounted to the body in the recess and configured to extend from the recess beyond the body bore to seal against the sealing surface formed by the closure.

A tap for producing and disconnecting a fluidic connection between at least two connector parts. The tap includes one connecting and disconnecting element, a manual actuating element for rotating the connecting and disconnecting element. The manual actuating element and the connecting and disconnecting element are coupled mechanically. The tap includes a main body having at least one connector part and an interior space for receiving the connecting and disconnecting element, the interior space includes a contact surface for being brought into contact with the connecting and disconnecting element.

A plug for retaining a filter screen in a fluid port of a servovalve, comprises an annular body, the annular body comprising: opposed first and second axial end surfaces, a radially inner surface extending between the first and second axial end surfaces, a radially outer surface extending between the first and second axial end surfaces and at least one recess formed in the radially inner surface for receiving a tool for removing the plug from the port. A tool for removing the plug comprises a pair of handles pivotally mounted to one another about a pivot, each handle having a plug gripping portion extending therefrom beyond the pivot, each plug gripping portion comprising an outwardly projecting tooth for engaging in the recess of the plug when the plug gripping portions are moved apart by operation of the handles.

A mix manifold (16) includes a plurality of valves to control the flow of material therethrough. First and second valves (36a, 36b) are linked for simultaneous actuation. The first and second valves each include valve members (56a, 56b) disposed within and rotatable relative to seal bodies (58a, 58b). The valve members seal against the seal bodies and the seal bodies seal against the manifold. A solvent valve (36c) also includes a valve member (56c) in a seal body (58c). The first and second valves are configured to open only when the solvent valve is closed. The solvent valve is configured to open only when the first and second valves are closed. The solvent valve can rotate between a plurality of positions to control the flow of solvent to flowpaths downstream of the first and second valves.