hydraulic 3 spool proportional control valve 

Proportional multi-way directional spool valve type HLPSL and HLPSV according to load-sensitive principle are mainly applied to engineering machinery electric hydraulic control field to control the movement direction & speed of hydraulic oil cylinder or hydraulic motor. With various functions such as electric proportional control, electric switching value control, hydraulic control, pneumatic control, manual control, etc., such valves can realize stepless speed regulation and will not be influenced by load change. The characteristic of load sensing enables the multi-way actuators to run simultaneously and independently from each other at different speed and pressure ratings until the maximum flow of bumping source is reached.    5 Valve Plates 3 Series  For Concrete Boom Pumps Vehicles HLPSL3C1C/350-3-32H40/40A300B300N/EA2         …

3 Series Pure Manual Friction Positioning Multi-way Valve 5 Series Electro-proportional Multi-way Valve 3 Series Electro-proportional Multi-way Valve 3 Series Pure Manual Proportional Multi-way Valve 3 Series Explosion-proof Coal Safety Proportional Multi-way Valve