Pilot control device joystick and foot pedal work according to the principle of direct-acting pressure reducing valves. In rest position, the joystick lever or kit pedal is held in neutral by return spring; inlet port P is closed and service ports (1 – 2 – 3 -4) are connected to tank port T. By selecting control lever, plunger compresses return spring and reaction spring through cam mechanism; It shifts spool and opens connection holes between inlet port P and service ports consequently. This causes a pressure increase on service ports that is proportional to the control lever stroke and the reaction spring.
They are especially suitable for remote-controlling distributors, pumps and motors, in small spaces, thus ensuring high performances, quick and reliable responses on both mobile machineries and industrial equipment.
General Specification
- Maximum input pressure: 100 bar
- Maximum back pressure on tank line: ≤3 bar
- Maximum flow on ports: 15 L/min
- Hydraulic fluid: Mineral oil HL, HM (HLP DIN 51524)
- Fluid temperature range: -20℃ ~ +90℃
- Fluid viscosity range: 10 ~ 380 cst
- Max contamination level: 9 (NAS 1638) – 20/18/15 (ISO 4406:1999)
- Recommended filtration: β10 > 75 (ISO 16889:2008)
- Leakage (single port): 3 cc/min (with 50 bar of pressure)
- Body material: Cast iron
- Surface coating: Zin plated (According to international standards 2000/53/CE RoHS)
- Plunger material: Stainless steel
- Plunger guide material: Brass