ES284135U - Piston valve for fluids and gases (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Piston valve for fluids and/or gases, of the type constituted by a valve body inside which are two lateral chambers terminated in their free end areas by flanges or another form of coupling, and in the center of which the valve body presents a axial cylindrical passage that communicates the chambers, and said step is topped by a widening facing and in the same way as another end that has a bridge-arcade, in which the spindle related to the piston is coupled in axial direction and driven by a steering wheel; characterized in that the piston of the valve is constituted by a body having an upper cylindrical part provided in the axial direction with a widening, lower frustoconical, topped by a hemispherical zone; the body of the piston is related to an upper closure flap by means of screws and whose cover has a lower concentric projection by means of which a lining of sealing rings disposed in the cylindrical part of the piston body and positioned by a ring is positioned. A spring disposed in the lower frustoconical region of the piston, so that in the closure the ring lining presses on a laminated ring for adjusting the closure integral with the valve body; and in that the spring ring has a circumferential seat bevel on its side surface; which allows to transmit an axial pressure to the lining of rings that results in a radial pressure on them that favors the watertight closing of the valve. (Machine-translation by Google Translate, not legally binding)