Improvements introduced in the butterfly valves. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the butterfly valves, characterized by comprising an elastic ring of special rubber or similar material, whose diametral section has a sensitive figure of "dovetail" in correspondence with the section of the valve body where it is housed and whose free zones on the other hand they have thickened half-round platings, intended to face the connection flanges of the installation and have diametrically opposite holes that allow the passage of the carrier rod of the closing piece called butterfly, at the same time, that said rod the control unit has a circular recess, at the height of the recess with the valve's sealed casing, provided for the housing of a ring or O-ring that serves to close the assembly and stop the aforementioned cap on its lower part, while more superiorly and in the main body of the valve there is a second circular recess that receives or an elastic ring that also closes and stops the repeated bushing, contributing both toric seals to the centering and axial locking of the control rod in order to prevent the closing butterfly from moving upwards and if it remains always guided and in position. Correct operation. (Machine-translation by Google Translate, not legally binding)