The Cindy leak-free load control valve

Load control valves of this type prevent a hydraulic actuator from running ahead of, or "over-running", the available oil supply. They simultaneously act as a load control-, load-holding-, safety- and pipe-rupture valve. 

Advantages

• The three functions: load control valve with pre-opening; check valve;
  and pipe-rupture protection are all integrated in one assembly
• Load pressure acts in the closing direction;
  valve closes even with broken spring
• Leak-free valve seats; hardened, ground and lapped
• Good control characteristics
• Special oscillation damping
• Model with automatic over-compensation
• Valve opening is independent of load pressure

Models

• Body-mounted valve with threaded or SAE flanged ports
• Multi-block valve
• Cartridge valve 
• Motor valve for direct motor-mounting
• Body-mounted valve with integral secondary pressure relief valve
• With electro-proportional control

Technical data

Unit

Value

Nominal flow rate

Operating pressure

Secondary pressure, max.

Opening pressure

l/min

bar

bar

bar

150/250/350/500*

420

460

*²

Applications

• Mobile, port, and ship cranes  
• Aerial work platforms 
• Fire-fighting turntable ladders  
• Drilling rigs 
• Underground and tunnel boring machines 
• Hydraulic presses
• Winches