Hydraulic Section Valve Walvoil SD8 Control Valve With 2 Spools Max Pressure 315 Bar
hydraulic section valve Walvoil SD8 control valve with 2 spools ,max pressure 315bar
HSSD series directional control valve, flow range of 30-400L/min, can
meet different flow requirements; Its compact, heavyand simple design, can be used in a variety of work scenarios for open or closed centre hydraulic systems; stable performance, a variety of control methods to choose
Control type: manual, cable, pneumatic,
electro-hydraulic,solenoid, etc.
Circuit type: parallel
| flow rate | 80 liters |
| number of spools | 2spools |
| inlet section valve | side inlet, with relief valve |
| relief valve set pressure | 315bar |
| inlet port size | G3/8,G1/2, G3/4 |
| spool type | 3 positon, double acting |
| handle side arrangement | standard handle |
| spool cap side arrangement | 3position, spring return,manual control,detent control, |
| working section arrangement | standard type |
| work port size | G3/8,G1/2,G4/3,G1 |
| outlet section type | top outlet,side |
| outlet port size | G3/8,G1/2,G4/3,G1 |
Flow control valve troubleshooting
1. Throttle valve failure
Flow regulation failure: Check whether the valve core is stuck and whether the throttle is blocked. Clean the spool and throttle.
Leaks: Check the seals and replace the damaged ones.
2. The speed control valve is faulty
Unstable speed: It may be that the gap between the spool and the valve sleeve is too large, the spool spring of the pressure reducing valve is failing, etc. Parts need to be repaired or replaced.
Directional control valve troubleshooting
1. Check valve failure
Reverse Leak: Check the seal, replace the damaged one.
No one-way action: the spool is stuck by impurities or the spring is damaged, clean the spool or replace the spring.
2. Failure of the reversing valve
Non-reversing: Check whether the solenoid is damaged, whether the valve core is stuck, and whether the control oil circuit is blocked. Repair or replace the solenoid, clean the spool and control oil circuit.
Inadequate reversing: Adjust the spool stroke or check if the spring is suitable.
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