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.

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.

Quick disconnect fluid coupling devices described herein. The fluid couplings are configured for use in fluid systems for the purpose of providing a low-spill quick disconnect coupling. The fluid couplings include portions that are pivotable in relation to each other to open and close a fluid pathway through the fluid couplings. Particular embodiments of these fluid coupling can be configured to improve medical fluid handling equipment because the fluid coupling devices can be connected and disconnected (e.g., multiple times) while minimizing fluid spillage.

Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a groove 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 groove and configured to extend from the groove beyond the body bore to seal against the sealing surface formed by the closure.

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 fluid end assembly comprising a housing having multiple conduits formed therein. A tubular sleeve is installed within one of the conduits and is configured to house a plurality of packing seals. A seal is installed within a groove formed in the walls of the housing surrounding the tubular sleeve such that the seal engages an outer surface of the tubular sleeve.

A plug for use in a plug valve includes an attachable upper trunnion that is assembled to the main plug body using fasteners and a male-female dovetail fit. The tensile and compressive loading experienced by the main plug body during its linear motion, and the torsional loading experienced during its 90° rotation, is supported by the fasteners and the dovetail fit.

In an applicator assembly for applying a fluid in which the applicator assembly defines at least a portion of a flow path, the assembly may comprise an upstream fluid source, a downstream applicator for forming a point of application, a conduit generally connecting the fluid source to the applicator, an orifice structure defining an orifice opening configured such that fluid flowing along the flow path passes through the orifice opening, and an orifice inverting structure configured to reverse flow through the orifice opening of the orifice structure.

This invention relates to an apparatus for adapting an existing pipeline. The apparatus includes a clamp portion adapted to fit around at least part of an existing pipeline in use and at least one neck or branch portion depending from the clamp portion, and a valve means.

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.