TWO-WAY BUILT-IN VALVE USED AS HYDRAULIC OR PNEUMATIC APPARATUS

摘要

FIELD: hydraulic and pneumatic equipment. SUBSTANCE: two-way built-in valve used as hydraulic or pneumatic apparatus has sleeve (112) with stepped guide passage (180, 182) for valve piston (114) which has projection (184) axially dividing second stage (182) of guide passage into first end chamber and second circular control chamber (186 and 188). First connecting passage (194) in valve sleeve (112) connects second circular control chamber (188) with circular chamber (140) which receives lateral inlet (30) of main flow. Free section of valve seat (144) and section of axial main flow (146) correspond approximately to section of first stage (180) of guide passage. EFFECT: enhanced reliability. 1 dwg