New Hawe Hydraulik’s spool valve for civil and agricultural engineering

The directional, solenoid-actuated spool valve type EDL with series connection is actuated directly. The flows for the individual consumers can be individually adjusted. By means of additional functions in the intermediate plates (longitudinal and sandwich valve combination) and ancillary blocks the proportional directional spool valve can be flexibly adapted to different control tasks.
The directional spool valve type EDL can be combined directly with the proportional directional spool valve type PSL and PSV in size 2. It is used in mobile hydraulics, in particular in civil engineering and agricultural engineering.
The valve operates with a load-sensing system, and is controlled directly and actuated electrically. The flow rates for each different consumer can be adjusted individually, for example for functions in combine harvesters, forage harvesters and root crop harvesters. Values ranging from less than one to 50 L/min are possible. The spool pistons are available in seven graduated sizes, with the smallest spool size allowing a maximum flow rate of 3 L/min. This provides optimal resolution and the speeds of hydraulic motors in particular can be controlled with very high precision.
The EDL valve is designed for a system pressure of up to 320 bar, giving it higher compressive strength than comparable products of the market. Since flow resistance is fifty percent lower than usual, the valve improves the energy efficiency of the hydraulic system.