Overpressure valve for hydraulic lifting devices in particular for hydraulic mine stemples (Machine-translation by Google Translate, not legally binding)

摘要

Overpressure valve for hydraulic lifting or support devices, in particular for hydraulic mine steels, characterized by valves being established whose rod is held in a jacket made of elastic material, mainly rubber, which in turn is covered with a metal cap to achieve said jacket acts as a recovery spring, whose stem at its end or tulip penetrates into an outlet channel made in the body in which the valve is installed, while the supply channel thereof leads to an annular chamber provided completely surrounding to the tulip or functional end of the shank. (Machine-translation by Google Translate, not legally binding)