Vickers | SM42020762001510
SM420(20)76200/1510
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The SM420(20)76200/1510 servo valve is produced by Vickers for the Servo Valves series and is used to meter hydraulic flow in automated motion loops. It delivers a rated flow of 76 l/min (20 US gpm) at a 70 bar pressure drop, supplying the volume needed for mid-size cylinders while maintaining predictable pressure loss. A rated current of 15 mA drives the torque motor so control electronics can operate with low power stages. Coil resistance is 200 Ω at 21 °C, a value that limits heat rise and assists in fault detection for open or short circuits. Command polarity is defined so that a positive A or C signal sends flow to port B, simplifying setup during commissioning. Electrical connection is made through an MS-3106-14S-2S four-pin plug, giving a sealed and vibration-resistant interface common to industrial and military environments.
The valve body is 99.314 mm long, 71.882 mm high, and 86.868 mm wide, allowing it to fit compactly on standardized manifolds. A port circle diameter of 22.2 mm aligns the mounting holes with typical sub-plate layouts for consistent bolt spacing. Each working port seals with an O-ring that has a 1.78 mm cross section and a 10.82 mm inside diameter, preventing external leakage under dynamic pressure cycles. Together, these dimensional details support straightforward installation, reliable sealing, and space-efficient packaging inside hydraulic automation assemblies.
Technical Specifications
Coil Resistance
200 Ω (21 C)
Electrical Connector
MS-3106-14S-2S (4 pin)
Port Circle Diameter
22.2 mm (0.875 in)
Port O-ring Cross Section
1.78 mm (0.070 in)
Port O-ring Inside Diameter
10.82 mm (0.426 in)
Product Height
71.882 mm (2.830 in)
Product Length
99.314 mm (3.910 in)
Product Width
86.868 mm (3.420 in)
Rated Current
15 mA
Rated Flow (70 Bar Δp)
76 l/min (20 USgpm)
Signal Polarity
+A or C Causes Flow To Port B
1620 Old Apex Road
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