2W Series

2W Series

The 2W (UD/UW) series zero differential valves have the thread size range from 1/8” to 2”. AirTOP started the production when it is established. AirTOP has two types of these valves: brass body valves and stainless steel body valves, which can be normal close valve and normal open valve. With good quality and stable performance, this type of solenoid valves is widely used in many different industrial fields, especially water system.

Description of 2W Series





  • Specification

    Model 2W160-10 2W160-15 2W200-20 2W250-25 2W350-35 2W400-40 2W500-50
    2S160-10 2S160-15 2S200-20 2S250-25 2S350-35 2S400-40 2S500-50
    Working Medium air,water,oil
    Motion Pattern Dirct Drive Type
    Type Normal Close Type
    Aperture of Flow Rate 16 16 20 25 35 40 50
    CV Value 4.8 4.8 7.6 12 24 29 48
    Joint Pipe Bore G3/8 G1/2 G3/4 G1 G111/4 G11/2 G2
    Operation Fluid Viscosity 20CST(Below)
    Working-pressure water:0～0.5MPa,air:0～0.7MPa,oil:0～0.5MPa
    Max.Pressure Ressistance 1.0MPa
    Operating Temperature Range -5～+80℃
    Voltage Range ±10%
    Material of Body 2W:BRASS,2S:Stainless Steel
    Meterial of Oil Seal NBR or VITON






  • Specification

    Model 2W025-06 2W025-08 2W040-10 2WH012-06 2WH012-08 2WH020-10
    2S025-06 2S025-08 2S040-10 2SH012-06 2SH012-08 2SH020-10
    Working Medium Air,Water,Oil
    Motion Pattern Dirct Drive Type
    Type Normal Close Type /Normal Open Type
    Aperture of Flow Rate 2.5 4.0 1.2 2.0
    CV Value 0.23 0.60 0.05 0.15
    Joint Pipe Bore G1/8 G1/4 G3/8 G1/8 G1/4 G3/8
    Operation Fluid Viscosity 20CST（Below）
    Working-pressure 0～0.7MPa 0～2.0MPa
    Max.Pressure Ressistance 1.0MPa 3.5MPa
    Operating Temperature Range -5～+80℃
    Voltage Range +-10%
    Material of Body 2W:BRASS, 2S:Stainless Steel
    Meterial of Oil Seal NBR,EPDM OR VITON