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Vickers | DG5S4109A853

DG5S4109A853

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The Vickers DG5S4109A853 is part of the DG5 Two-Stage Directional Valves series. This valve has a maximum flow capacity of 946 liters per minute, or 250 US gallons per minute. It is designed to operate at a maximum pressure of 207 bar for the ports labeled p, A, and B, as well as for the pilot and external drain tank ports. The minimum pilot pressure required for shifting is 5.2 bar. A mounting interface to ISO 4401-10 standards is used, and the mounting hole diameter is 19.8 mm. The allowable maximum torque for mounting bolts is 285 Nm. The surface flatness for mounting must be within 0.0127 mm, and the finish should not exceed 1.6 micrometers.

Technical Specifications

Max Flow
946 l/min (250 USgpm)

Max Mounting Bolt Torque
285 Nm (210 ft·lb)

Max Operating Pressure (p, A, B)
207 bar (3000 psi)

Max Pilot Pressure
207 bar (3000 psi)

Max Tank Port Pressure (external Drain)
207 bar (3000 psi)

Min Pilot Pressure (shift)
5.2 bar (75 psi)

Mounting Hole Diameter
19.8 mm (0.781 in)

Mounting Interface
ISO 4401-10 (NFPA D10)

Mounting Surface Finish
1.6 µm (63 µin)

Mounting Surface Flatness
0.0127 mm (0.0005 in)

Spool Type
9

Spring Arrangement
A (Spring Offset To A Port)

Test Port Thread
7/16-20 UNF-2B

Valve Size
1-1/4 in (ISO-4401-10)

Δp P→a @ 473 L/min
3.17 bar

Δp P→t On Center @ 473 L/min
27.6 bar

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