Designed for single acting cylinders which are supposed to hold pressure. Specially suitable for rubber moulding presses. Ensure smooth decompression prior to return of the cylinder ram. Available as standard & Quick Exhaust. Large return oil passages allows rams to return under low external forces. Valves with quick exhaust feature have 2.34 times larger return passages. Provided with manual opening in case of power failures. Valves can be connected in series for independent multiple single acting cylinder operations. The valve is actuated by a solenoid controlled pilot.

Flow passage areas	Valve	Model	P to A P to B	B to T
	Standard	4DES20A	3.1 cm²	5.3 cm²
	With quick exhaust feature	4DES20A	3.1 cm²	12.4 cm²
Operating Pressure	For ports P, A, B, C, G --- 350 bar For port T ------------- 7 bar max.
Pilot Pressure	35 bar.