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The 4WRTE27E1-500L-4X/6EG24K31/A1M valve is manufactured by Bosch Rexroth as part of the 4WRTE Directional Control Valves series and directs hydraulic flow in automated equipment. Its nominal size of 27 sets the interface dimensions for large circuits, while a rated flow of 500 l/min defines continuous capacity. The design tolerates up to 1000 l/min to handle transient peaks and withstands operating pressures to 270 bar for high-pressure installations. A ±10 V command/actual value interface enables analog control and feedback of spool position, and onboard electronics run from a 24 V DC supply with a maximum draw of 1.6 A. The enclosure meets IP65 so it blocks dust and low-pressure water jets during service.
A DIN EN 175201-804 (K31) connector provides quick electrical hookup, and the ISO 4401-08-08-0-05 porting pattern mates with common subplates. Each working port—A, B, P, and T—features a 32 mm diameter to support the specified flows. Pilot oil is taken internally from port P, returned externally through port Y, and moves at 20 l/min to shift the main spool from 0 to 100 percent stroke. Two PNP position switch outputs report end-of-stroke status to the controller. The assembly weighs 17 kg, a factor considered when selecting mounting hardware.
Command/actual Value Interface
±10 V
Current Consumption (maximum)
1.6 A
Electrical Connector
DIN EN 175201-804 (K31)
Max Operating Pressure (p, A, B)
270 bar
Max Recommended Flow
1000 l/min
Nominal Size
27
Pilot Oil Flow (step 0–100%)
20 l/min
Pilot Oil Return
External (via Y)
Pilot Oil Supply
Internal (from P)
Port Diameter (a,b,p,t)
32 mm
Porting Pattern
ISO 4401-08-08-0-05
Position Switch Outputs
2 (PNP)
Protection Class
IP65
Rated Flow
500 l/min
Supply Voltage (obe)
24 V DC
Weight
17 kg
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