Abstract: A valve seat insert for a check valve poppet, the valve seat insert having a thickness and an aperture located through the thickness and configured to accept a high pressure outlet passageway. The valve seat insert includes a plurality of bores that are located through the thickness and spaced around the aperture. The plurality of bores is located for registration with inlet passages of a check valve body to which the valve seat insert is to be attached. The plurality of bores may also be disposed circumferentially around and in fluid communication with a circumferential groove located in the thickness of the valve seat insert. Also provided is an inlet valve assembly that includes the valve seat insert and has a check valve body with a boss and a plurality of inlet passages surrounding a high pressure outlet passageway.

Abstract: A removable cartridge seal and dilatable collet retainer for a hydraulic plunger is provided to permit ready removal and replacement of the plunger and seal in a hydraulic intensifier device or the like.

Abstract: The Assembly comprises a centrally-bored nozzle, a centrally-bored nozzle body, a centrally-bored jet orifice element, and an orifice element-supporting cylinder, the four being in substantially collinear alignment along a longitudinal axis. The cylinder is disposed in the central bore of the body, and it too has a fluid-accommodating passage formed centrally therethrough, as well as a recess in one end in which to nest the orifice element. The cylinder has a straight shank portion which projects into a void in the nozzle body subsisting between the element and the nozzle. Adjustment screws, in penetration of the nozzle body, are arrayed about the shank portion for manipulation to adjust the attitude of the shank portion relative to the longitudinal axis and, thereby, correctively align the element with the nozzle.