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    Solenoid Valve, 2 Way, Normally Closed, 12V/24V/220V for air water oil

    $32.92
    Electric solenoid valve, 2/2 way, N/C, is designed for control the flow of air, water and oil, with different port sizes for your selection, G1/4, 3/8, 1/2, 3/4 inch etc. and operating voltages DC 12V, DC 24V and AC 220V. Valve body is made of brass, good medium compatibility, high reliability and long service life.
    SKU: ATO-2W
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    Free shipping
    Delivery date: 6-12 days

    Two-way Normally Closed electric solenoid valves control flow of air, water and oil. The valve is closed when the solenoid is de-energized and it is open when energized. It is widely used in the areas like mechanical, textile, medical, food processing and so on.

    Specification

    Model 2W025-08 2W040-10 2W160-15 2W200-20 2W250-25 2W350-35 2W400-40 2W500-50
    Valve Type 2 Way 2 Position, Normally Closed
    Media Air, Water, Oil
    Operation Mode Drect-acting Pilot-operated
    Port Diammeter(mm2) 2.5 4.0 16 20 25 35 40 50
    Flow Rate(Cv) 0.23 0.6 4.8 7.6 12 24 29 48
    Port Size G1/4" G3/8" G1/2" G3/4" G1" G1¼" G1½" G2"
    Fluid Viscosity Under 20 CS
    Operating Pressure Water,Oil: 0~0.5MPa Air: 0~0.7MPa
    Max. Pressure Resistance 1.0MPa
    Voltage(Optional) 12V DC, 24V DC, 220V AC
    Voltage Tolerance ±10%
    Operating Temperature -5~+85℃ (23~185℉)
    Body Material Brass
    Seal Material NBR
    Coil Power 15VA 20VA 50VA

    Dimensions

    2 way solenoid valve nc dimensions
    2 way nc solenoid valve dimensions

    Model A B C D K
    2W160-15 93 55.5 106.5 67.5 G1/2
    2W200-20 97 55.5 113 73 G3/4
    2W250-25 102.5 72.5 121 94 G1
    2W350-35 134.5 92.5 159 120 G1¼
    2W400-40 137.5 92.5 165 122 G1½
    2W500-50 151.5 123 188 170 G2

    Solenoid valve symbol
    2W nc electric solenoid valve symbol
    Tips: Working principle and characteristics of pilot-operated solenoid valve

    • Working principle
      when the power is on, the electromagnetic force opens the pilot hole and the pressure of the upper chamber decreases rapidly, forming a pressure difference which is low in the upside and high in the bottom around the closure element. The fluid pressure promotes the closure element to move upwards to open the valve. When the power is off, the spring force closes the pilot hole. The pressure through the bypass port rapidly forms a pressure difference which is high in the upside and low in the bottom around the closure element. The fluid pressure drives the closure element to move downwards and close the valve.
    • Characteristics
      The fluid pressure scope has a relatively high upper limit. It can be installed randomly, with the fluid pressure difference condition being satisfied.
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