Hydraulic Directional Control Valve Spool Types

4 way 3 position 2 spool action.

Hydraulic directional control valve spool types.

Design pressure unloading circuit by spool function in neutral position to achieve energy savings. D3 indd dd a53 parker hannifin corporation hydraulic valve division elyria ohio usa catalog hy14 2500 us directional control valves a technical information series d3w interface nfpa d05 cetop 5 ng 10 max. Prince rd5200 directional control valve 25gpm rd522gcga5a4b1 item 220 201. Before selecting hydraulic directional spool valves it must be sure to choose appropriate spool valve in neutral position as per requirements of hydraulic system.

3 1 for spool type directional control valves. 252 81 as low as. When the force needed to shift the main spool of the valve exceeds the practical limit of a solenoid the pilot valve uses fluid pressure to shift the main spool left or right. Some experience with the directional control valve symbol has already been gained.

Operating p a b. Directional control valves hydraulic valves hydraulics prince monoblock valve brand new prince. Hydraulic valves directional control valves. Chief g series p80 directional control valve.

We provide industrial seat and spool valves hydraulically or manually operated pneumatic solenoid and manual valves mobile monoblock and sectional valves ball valves for different applications and media control valves and. Pressure 345 bar 5000 psi standard csa 207 bar 3000 psi. Such type of directional control valve require good practice of maintenance as dirty hydraulic fluid will damage the valve land mating surface and therefore accuracy will not be secured as desired. Parker offers a comprehensive range of directional control valves for a wide variety of media and customer applications available in various types and configurations.

For control of cylinders motors etc. Spring center 2 i o port 10 sae 2. Dcvs will usually consist of a spool inside a cylinder which is mechanically or electrically actuated. There will be one spool which will move to and fro i e.

Spool will slide in the bore in axial direction. Directional control valves dcvs are one of the most fundamental parts of hydraulic and pneumatic systems dcvs allow fluid flow hydraulic oil water or air into different paths from one or more sources. This cutaway view of a spool type directional control valve has pilot valve. The directional control valve symbol is the most intuitive and selfexplanatory of the symbols.