Bosch Rexroth | H-4WEH32Y6X6EW110N9DA
H-4WEH32Y6X/6EW110N9DA
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The H-4WEH32Y6X/6EW110N9DA valve is part of the WEH Directional Spool Valves series manufactured by Bosch Rexroth. Designed for hydraulic automation circuits, it switches flow paths through electro-hydraulic actuation. The unit is built in size 32, uses a 4-way passage arrangement, and carries the spool symbol Y to define its internal land geometry. Two discrete spool positions allow open or closed routing as commanded. A concealed manual override permits service movement without energizing the pilot stage. Mounting follows the ISO 4401-10-09-0-05 porting pattern, so it drops onto standard subplates. Pilot oil is supplied externally through port X, and a minimum pilot pressure of 10 bar must be present to ensure reliable shifting. Each switching event draws 58.8 cm³ of pilot volume, which lets designers size accumulators and supply lines accurately.
Under load the valve passes up to 1100 l/min at 70 bar, limiting pressure loss in high-capacity manifolds. Working pressure at ports P, A, and B can reach 350 bar, while the tank line is restricted to 250 bar. The pilot circuit safely withstands 250 bar, and port Y or any auxiliary drain must stay below 160 bar. Hydraulic fluid cleanliness should conform to ISO 4406 class 20/18/15 to protect the matched spool and bore surfaces from abrasion. These limits outline the operating envelope and confirm that the H-4WEH32Y6X/6EW110N9DA directional valve manages large volumes and elevated pressures without exceeding its design margins.
Technical Specifications
Actuation Type
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed
Max Flow (70 Bar)
1100 l/min
Max Operating Pressure (p,a,b)
350 bar
Max Operating Pressure (t)
250 bar
Max Pilot Pressure
250 bar
Max Pressure (port Y, Ac)
160 bar
Min Pilot Pressure
10 bar
Pilot Oil Supply
External (X)
Pilot Volume Per Switch
58.8 cm3
Porting Pattern
ISO 4401-10-09-0-05
Size (ng)
32
Spool Positions
2
Spool Symbol
Y
Way Configuration
4-Way
1620 Old Apex Road
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