Abstract: A gate valve has a housing provided with a passage embraced by a valve seat for a fluid medium, carrying solid particles, to flow therethrough. A gate is provided which is connected to a rod of a drive through a beam member. A hole in the beam member receives a shank with a clearance extending axially of the rod. Ends of the beam are pliable in an axial direction relative the passage and the beam ends have bevels to engage with stops of the housing. The housing has a projection to limit the travel of the gate axially of the rod.

Abstract: A gate valve having a casing, a seat, a gate having a tapered face made in the gate surface in the direction of its movement in the shut-off direction on the side opposite to the side facing toward the seat, a stop provided for engaging the tapered face of the gate, the stop being secured to a rod which is installed transversely of the centerline of a passage of the casing, a sleeve installed in the casing wall for rotation relative to the casing, the inner surface of the sleeve being coaxial with, and surrounding the rod, and the longitudinal centerline of the outer surface of the sleeve being eccentric with respect to the longitudinal axis of the rod.

Abstract: A valve housing has butt pipes for connection to a pipeline for defining therewith a passage for a flow of a fluid being conveyed, preferably of a slurry. A plurality of ribs are provided along the passage on the lower portion of the wall thereof, each rib extending transversely of the passage. Each rib is of a tear-shaped configuration in its section taken along the longitudinal centerline of the passage, the enlarged portion of the rib facing toward the incoming flow of a fluid being conveyed.

Abstract: A pulse hydraulic monitor comprises two barrels for alternately directing a pulsating jet of liquid onto a target, a valve means for dividing the flow of liquid, having an inlet for a hydraulic liquid, and two outlets for delivering the same into the barrels, and pulse-forming means. The pulse-forming means includes a through hollow enclosure, a separating member, two limit stops of the separating member, means for retarding the motion of the separating member. The through hollow enclosure is in hydraulical relationship with the barrels and the separating member is movable between two end positions relative the barrels so as to take one of these two end positions for forming a pulse when the pressure of the hydraulic liquid flowing in the corresponding barrel assumes a predetermined value.