PARKER Pilot Operated Directional Control Valves Series D31DW D41VW D81VW D91VW D111VW

The D31, D41, D81, D91 and D111 are electrically controlled 4/3 or 4/2 way directional control valves. The valves are pilot operated by an NG6 valve. Pressure and flow of the pilot oil have a significant influence on the response time of the spool in the main stage. In order to guarantee a save switching of the spool please choose the appropriate pilot oil supply and drain option. (Spools with a connection P to T need an external pressure supply or an integral check valve. For spools with negative cross-over position the same options are recommended.) The minimum pilot pressure must be ensured for all operating conditions of the directional valve.