Hydraulic path valve mechanism - has max. flow limitation unit with adjustable throttle adjusted by pin

摘要

The hydraulic path valve has a control slide in a housing bore, to alternately connect a motor connection to a feed or return, or block it in a neutral position. The slide forms an adjustable measuring throttle, and together with a hydraulic unit, achieves load-independant flow control. A unit for max. flow limitation has an externally adjustable pin. A longitudinal bore (14) contains a throttle piston (56). This forms a throttle (27,57) in the pressure medium flow to the motor connection (41,42) and in series with the measuring throttle (58). A transverse bore (45)accommodates the pin (62), which is in active connection with the throttle piston via an excentric (61). The front end (63) of the pin is charged by the pressure in a return chamber (44). . 1.