Agricultural spraying valve unit for controlled spraying of agricultural fluid, has main valve arranged in conduction path, and 2/2 way-valve arranged in another conduction path, where pressure chamber runs through latter conduction path

摘要

The valve unit (1) has a conduction path and another conduction path (71) arranged between a primary conduit (2) and a secondary conduit (3). A main valve (4) is arranged in the former conduction path, and a pilot valve i.e. 2/2 way-valve (60) is arranged in the latter conduction path. A pressure chamber (62) runs through the latter conduction path, where the pressure chamber is limited by a piston surface of a valve body (6) of the main valve. A channel (56) passes between the 2/2 way-valve and the secondary conduit, where the channel extends through the valve body.