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Vickers | SM4-207528-8040-50

SM4-20(7.5)28-80/40-50

Name: SM4-20(7.5)28-80/40-50
Brand: Vickers
Price: 176 USD
Availability: InStock
Rating: 4.4 (13 reviews)

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The Vickers SM4-20(7.5)28-80/40-50 is a servo valve from the Servo Valves series. This model operates within a supply pressure range of 14 to 350 bar, or 200 to 5000 psi. The valve delivers a rated flow of 28 liters per minute at 70 bar. Each coil in the assembly has a resistance of 80 ohms and a rated current of 40 milliamps. Maximum pilot flow at 70 bar is 0.35 liters per minute. The maximum total null leakage is 2 liters per minute. The maximum operating temperature for this valve is 135 degrees Celsius, or 275 degrees Fahrenheit. It is designed with a burst pressure for the return open position at 250 percent of the maximum supply and proof pressure for the supply port at 150 percent of the maximum supply.

Technical Specifications

Burst Pressure (return Open)
250% of max supply

Coil Resistance (per Coil)
80 ohm

Max Operating Temperature
135 C (275 F)

Max Supply Pressure
350 bar (5000 psi)

Maximum Pilot Flow (70 Bar)
0.35 l/min

Maximum Total Null Leakage
2.00 l/min

Min Supply Pressure
14 bar (200 psi)

Proof Pressure (supply Port)
150% of max supply

Rated Current (per Coil)
40 mA

Rated Flow (70 Bar)
28 l/min

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