Abstract: A fast-actuating on-off valve and pressure regulator particularly well-suited for use with high-pressure incompressible fluids. An actuator, manually-operated or powered, provides a linear push-pull force to a valve stem assembly mounted inside a valve cavity having a fluid inlet and one or more fluid outlets. The valve stem assembly includes a valve stem that has a shoulder at one end. The valve stem assembly includes a stem collar having a capped end with a central hole to engage the valve stem, a cylindrical cavity to house the stem shoulder, and a threaded portion engageable with a valve poppet or a poppet extension. Each valve poppet has a threaded end engageable with the stem collar and a sealing end to engage with a fluid outlet centrally positioned within a valve seat or a valve poppet.

Abstract: A valve assembly having a valve body, a middle body and an adapter block secured to each other. Fluid enters thorugh an inlet tube and in a normal operating condition is discharged through an outlet tube. To relieve the pressure within the valve assembly, a dump tube is opened. A dump valve seat is mounted within the valve body. A valve plunger is mounted within a plunger shoulder cavity within the valve body and/or the middle body. The valve plunger mates with the dump valve seat. A compression spring is used to urge the valve plunger into either a seated position or an unseated position. A dump valve stem is axially displaced into and out of a seated position within a plunger through hole of the valve plunger.

Abstract: A fast-actuating on-off valve and pressure regulator particularly well-suited for use with high-pressure incompressible fluids. An actuator, manually-operated or powered, provides a linear push-pull force to a valve stem assembly mounted inside a valve cavity having a fluid inlet and one or more fluid outlets which are arranged axially and concentric with respect to the valve stem. The valve stem assembly includes a valve stem that has a shoulder at one end, with or without an extension. One or more stem springs are positioned concentrically with respect to the valve stem and are capable of sliding along the valve stem and the extension of the valve stem. The valve stem assembly includes one or more stem collars each having a capped end with a central hole to engage the valve stem, a cylindrical cavity to house the stem shoulder, and a threaded portion engageable with a valve poppet.

Abstract: Disclosed herein is a check valve assembly for use in high pressure pumps having a high pressure plunger reciprocating in a pressure chamber or for use in other pressure chambers wherein both fluid inlet check valve means and fluid outlet check valve means are provided adjacent to the pressure chamber. The check valve assembly of the present invention is especially suitable for use in high pressure pumps operating to produce fluid pressures in excess of 10,000 psi, and significantly increases the operating life of the check valve assembly by reducing the incidences of material fatigue caused by cyclic stresses due to cycling high and low pressures.

Abstract: A process and apparatus for generating high velocity particulate containing fluid jets is provided which is capable of cutting hard materials such as rock and concrete, and is especially useful for notching blast holes to control the pattern of explosion and material removal. A particulate passage valve is provided to open and close the particulate passage in response to changes in fluid pressure. The apparatus may be portable, durable and lightweight. The nozzle assembly may be inserted directly into the drill hole and is operable in any orientation to issue one or a plurality of particulate containing fluid jet streams.

Abstract: A process and apparatus for generating multiple spirally convergent/divergent fluid jet streams and an improved process and apparatus for generating particulate containing fluid jets wherein at least one discontinuity generator is provided to create fluid instabilities, enhancing entrainment and acceleration of particulates in the fluid jet stream and providing uniform distribution of accelerated particles over a large surface area.

Abstract: A process and apparatus for generating particulate containing fluid jets wherein at least one discontinuity generator is provided to create fluid instabilities, enhancing entrainment and acceleration of particulates in the fluid jet stream and providing uniform distribution of accelerated particles over a large surface area.

Abstract: Process for introducing solid particles into fluid streams under accurate control. Several embodiments of nozzle apparatus are disclosed utilizing a central fluid orifice or orifices and peripheral solids orifices for mixing the solids into the fluid stream. When multiple fluid orifices are utilized, an area of lower pressure is formed in the central portion of the combined fluid stream thereby aiding in the mixture of the solids into the fluid stream. A flow shaping nozzle is provided at the exit of the apparatus to increase the mixing of the solids within the fluid jets stream. The flow shaping nozzle may have both axial and radial freedom of movement for forming the fluid-solids stream and self-alignment, respectively. The process of this invention, in one preferred embodiment, involves introduction of the solids in the form of a foam into the fluid jet stream.

Abstract: Apparatus and process for introducing solid particles into fluid streams under accurate control. Several embodiments of nozzle apparatus are disclosed utilizing a central fluid orifice or orifices and peripheral solids orifices for mixing the solids into the fluid stream. When multiple fluid orifices are utilized, an area of lower pressure is formed in the central portion of the combined fluid stream thereby aiding in the mixture of the solids into the fluid stream. A flow shaping nozzle is provided at the exit of the apparatus to increase the mixing of the solids within the fluid jets stream. The flow shaping nozzle may have both axial and radial freedom of movement for forming the fluid-solids stream and self-alignment, respectively. The apparatus and process of this invention, in one preferred embodiment, involves introduction of the solids in the form of a foam into the fluid jet stream.