Abstract: A bi-directional adjustable energy dissipating near zero leakage head loss valve comprising a valve body including and actuation shaft housing and a guide shaft mount disposed in opposition along the transverse valve actuation axis; a fixed plate having downstream orifices parallel to the flow axis; a mobile plate having upstream orifices parallel to the flow axis adapted to move along the transverse valve actuation axis: from a fully open position, wherein the upstream and downstream orifices are aligned to allow flow communication to a fully closed position, wherein the orifices are blocked by the mobile plate; a self adjusting taper ring located about the upstream inner perimeter of the valve body, the self adjusting taper ring having an inner surface engagingly biased against and parallel to the upstream side of the mobile plate, and having an outer surface engagingly biased against an upstream pipe gasket flange.

Abstract: A bi-directional adjustable energy dissipating near zero leakage head loss valve comprising a valve body including and actuation shaft housing and a guide shaft mount disposed in opposition along the transverse valve actuation axis; a fixed plate having downstream orifices parallel to the flow axis; a mobile plate having upstream orifices parallel to the flow axis adapted to move along the transverse valve actuation axis: from a fully open position, wherein the upstream and downstream orifices are aligned to allow flow communication to a fully closed position, wherein the orifices are blocked by the mobile plate; a self adjusting taper ring located about the upstream inner perimeter of the valve body, the self adjusting taper ring having an inner surface engagingly biased against and parallel to the upstream side of the mobile plate, and having an outer surface engagingly biased against an upstream pipe gasket flange.

Abstract: A bi-directional head loss valve with a valve body having a flow path along a flow axis and a transverse valve actuation axis, an actuation shaft housing and a guide shaft mount disposed in opposition along the transverse valve actuation axis. A fixed plate is housed within the valve body transverse the flow axis, with downstream orifices parallel to the flow axis and a mobile plate is housed within the valve body upstream of and parallel to the fixed plate, with upstream orifices parallel to the flow axis. The mobile plate is adapted to move along the transverse valve actuation axis: from a fully open position, wherein the upstream and downstream orifices are in flow communication; to a fully closed position, wherein the downstream orifices are blocked by the mobile plate. An actuation shaft along the transverse actuation axis is slidably housed within the actuation shaft housing, and has an inner end engaging the mobile plate and an outer end adapted to engage a valve actuator.

Abstract: A bi-directional head loss valve with a valve body having a flow path along a flow axis and a transverse valve actuation axis, an actuation shaft housing and a guide shaft mount disposed in opposition along the transverse valve actuation axis. A fixed plate is housed within the valve body transverse the flow axis, with downstream orifices parallel to the flow axis and a mobile plate is housed within the valve body upstream of and parallel to the fixed plate, with upstream orifices parallel to the flow axis. The mobile plate is adapted to move along the transverse valve actuation axis: from a fully open position, wherein the upstream and downstream orifices are in flow communication; to a fully closed position, wherein the downstream orifices are blocked by the mobile plate. An actuation shaft along the transverse actuation axis is slidably housed within the actuation shaft housing, and has an inner end engaging the mobile plate and an outer end adapted to engage a valve actuator.

Abstract: A packing device, for sealing a longitudinal shaft against leakage of a pressurized fluid, having an elongate valve housing with an annular internal chamber about a coaxial rotatable shaft. The chamber has an inner end with an annular stationary packing support shoulder exposed to pressurized fluid and an outer end with an annular packing access opening exposed to ambient air pressure. Annular self travelling pressure energized retained chevron packing is disposed within the chamber, an inner end thereof engaging the stationary packing support shoulder. An axially slidable ring engages an outer end of the packing, and gland housing engages an outer end of the slidable ring. The gland housing includes compression mountings for loading the packing. For limiting the axial movement of the ring within the chamber when the gland housing is removed, the valve housing includes an annular groove within which a floating retaining clip is slidably disposed.

Abstract: A packing device, for sealing a longitudinal shaft against leakage of a pressurized fluid, having an elongate housing with an annular internal chamber about a coaxial rotatable shaft. The chamber has an inner end with an annular stationary packing support shoulder exposed to pressurized fluid and an outer end with an annular packing access opening exposed to ambient air pressure. Annular self travelling pressure energized retained chevron packing is disposed within the chamber, an inner end thereof engaging the stationary packing support shoulder. An axially slidable ring engages an outer end of the packing, and gland bearings engage an outer end of the slidable ring. The bearings include compression mountings for loading the packing. For limiting the axial movement of the ring within the chamber when the gland bearings are removed, the housing includes an annular groove within which a floating retaining clip is slidably disposed.

Abstract: A valve has a housing to which a 360 degree notch plate is integrally connected. A valve member mounted within the housing control fluid flows and rotates though substantially 90 degrees between maximally open and closed positions. A valve stem extends upwardly from the valve and through an opening formed in the notch plate. A handle is releasably secured to the valve stem immediately above the notch plate and has a spring-biased pivoting arm which cooperates with the notches to permit the angular position of the handle and consequently the valve member to be incrementally adjusted and locked. The upper surface of the notch plate has four distinct quadrants, and a number of holes formed at predetermined locations, a different pair of holes being associated with and positioned to either side of each quadrant. The valve stem is shaped to receive the handle in only predetermined angular orientations relative to the valve member.

Abstract: In a percussive tool in which a very high pressure and preferably cavitating water jet is directed through an opening in the working surface of the tool, the jet is formed by a nozzle positioned in a cavity behind the opening and decoupled from the tool by a bearing layer of water from the jet. A supply pipe extends rearwardly of the nozzle without contacting the tool, and is supported externally of the tool, on a machine which operates the tool, by a support which allows the fluid bearing to center the nozzle within the cavity while restraining movement of the nozzle axially of the tool.