They determine the path through which a fluid transverses a given circuit.
Hydraulic directional control valve types pdf.
Directional control valves are probably the most common of all hydraulic components and are used to control the starting stopping and reversal of flow in a system.
Catalog hy14 2550 us proportional directional control valves d1fb indd ddp a36 parker hannifin corporation hydr alv division elyr a a specifications series d 1fb general design pilot operated dc valve actuation proportional solenoid size ng10 cetop 5 ng16 cetop 7 ng25 cetop 8 ng32 cetop 10.
Operation hydraulic symbols directional valves type kv with direct mechanical operation by means of a lever control the direction of the hydraulic fluid medium flow.
There are three types of valves.
These directional valves consist of a housing 1 control spool 2 control mechanism 3 and return spring 4.
Specifications general description series d3w directional control valves are high performance 4 chamber direct operated wet armature solenoid controlled 3 or 4 way valves.
They protect the system against overpressure which may occur due to a sudden surge as valves open or close or due to an increase in fluid demand.
In 4 3 way directional valves the centre position of the control.
A manual hydraulic directional control valve characteristics and configurations of manual directional control valves used in hydraulic systems selecting the right valve for the job.