The Duplomatic DSB* series includes self-reversing directional control valves designed for subplate mounting in hydraulic systems. These valves are particularly useful in applications like waste compactors and mobile machinery, where automatic flow reversal is needed without electrical control.

 Operating Principle

• The valve reverses flow direction when the flow rate stops in either the A or B line—typically when a cylinder reaches its end stroke.
• The reversing action is hydraulically actuated and independent of line pressure, making it reliable in varying load conditions.

 Technical Specifications

• Fluid Viscosity Range: 10–400 cSt (recommended: 25 cSt)
• Contamination Class: ISO 4406:1999 class 20/18/15
• Surface Treatment: Zinc-nickel coating for corrosion resistance