Vickers | S571-N
S571-N
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The S571-N valve belongs to the Solenoid Valves series and is manufactured by Vickers for hydraulic automation circuits where remote actuation is required. It is electrically operated, so coil energy shifts the spool instead of relying on pilot pressure. A screw-in cartridge installation lets the unit mount directly in a manifold block, minimizing external piping. The design tolerates system pressures up to 210 bar, allowing use in medium-pressure mobile or industrial powerpacks. A rated flow of 34 L/min supports moderate actuator speeds without excessive pressure drop. Four valve ports route pressure, tank, and two work lines through the cartridge, while the cartridge-only port style removes the need for a separate valve body.
The overall length of 155.956 mm, height of 50.800 mm, and width of 1.400 in define the space needed when laid out in a compact manifold. Operation remains stable between –40 °C and 120 °C, covering cold-start mobile equipment and high-temperature industrial enclosures. Internal leakage is limited to 5 drops per minute, reducing energy loss and heat generation during neutral flow conditions. Four housing ports match common cavity patterns for straightforward block machining. The coil has no built-in termination, so users select their own connector style, and no suppression diode is included, so external flyback protection may be required. There is no manual override, which prevents unauthorized hand intervention and maintains purely electric control.
Technical Specifications
Coil Termination
None
Diode
No
Flow Rate
34 L/min
Height
50.800 mm
Installation Type
Screw-In Cartridge
Leakage
5 drops/min
Length
155.956 mm
Number Of Housing Ports
4
Number Of Valve Ports
4
Operating Temp Max
120 C
Operating Temp Min
-40 C
Operation
Electrically Operated
Override Type
None
Port Type
Cartridge Only
Pressure Rating
210 bar
Width
1.400 in
1620 Old Apex Road
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