Bosch Rexroth | VTDFPA21G24K00V
VTDFPA21G24K00V
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The VTDFPA21G24K00V valve belongs to the VT-DFP Directional Valves series and is manufactured by Bosch Rexroth for hydraulic automation where reliable flow switching is required. It operates on a 24 VDC supply, with a lower limit of 21 V to keep the solenoid energized during minor voltage dips and a short-time upper limit of 35 V to survive brief surges. A static control current of 0.6 A defines the normal power demand, while a 1.25 A peak accommodates the initial magnet force needed for fast spool movement. Wiring is completed through a K0 connector that matches common machine harnesses, and spool version A establishes the internal land geometry that directs oil between ports. An IP65 enclosure prevents dust ingress and water spray from affecting the coil or armature, and hydraulic fluid must be filtered to ISO 4406 class 18/16/13 to avoid wear on the precision-ground spool. The unit weighs 1.96 kg, allowing straightforward installation without lifting equipment.
Ports A and p tolerate operating pressures up to 400 bar so the valve can be placed directly on high-pressure pump lines, while port T accepts a return pressure of 100 bar without compromising switching accuracy. FKM seals resist mineral oils and elevated temperatures, maintaining leakage control in demanding duty cycles. The housing is fastened to a subplate with M6 × 40 screws specified by ISO 4762, and each screw is tightened to 9 Nm to achieve proper clamping without deforming the gasket surface. These mechanical details ensure the body remains rigid under the stated pressure ratings. Together, the pressure limits, sealing choice, and mounting hardware define the valve’s suitability for compact power units and manifold blocks that operate at high pressure and variable temperature.
Technical Specifications
Cleanliness Class (iso 4406)
18/16/13
Connector Type
K0
Control Spool Version
A
Ingress Protection
IP65
Mass
1.96 kg
Max Operating Pressure (ports A,p)
400 bar
Max Return Pressure (port T)
100 bar
Maximum Current
1.25 A
Mounting Screws
M6 x 40 (ISO 4762)
Rated Current (static Control)
0.6 A
Screw Tightening Torque
9 Nm
Seal Material
FKM
Supply Lower Limit
21 V
Supply Upper Limit (short-time)
35 V
Supply Voltage
24 VDC
1620 Old Apex Road
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