CKD AB21-02-3-A – 2/2 Normally Closed Solenoid Valve, Rc1/4, 3mm Orifice

✅ CKD AB21-02-3-A is a 2/2 normally closed solenoid valve from the AB21 Series, designed for direct control of compatible fluids in industrial equipment.

✅ The model features an Rc1/4 connection and approximately 3mm orifice, making it suitable for low- to medium-flow fluid control applications.

✅ The AB21 Series uses a direct-acting poppet structure and can be used with air, water, kerosene and compatible oils with viscosity up to approximately 50 mm²/s.

✅ For the AB21-02-3 configuration, the reference maximum differential pressure is approximately 0.7 MPa for air, 0.2 MPa for water/kerosene and 0.4 MPa for oil, depending on operating conditions.

✅ The normally closed design keeps the valve closed when the solenoid is de-energized. When the coil is energized, the valve opens to allow fluid flow.

Technical Specifications

✅ Product name: Fluid control solenoid valve

✅ Brand: CKD

✅ Series: AB21

✅ Model: AB21-02-3-A

✅ Valve type: 2/2

✅ Initial state: Normally closed

✅ Actuation: Direct acting

✅ Port size: Rc1/4

✅ Orifice size: 3mm

✅ Working fluids: Air, water, kerosene and compatible oils

✅ Reference oil viscosity: ≤50 mm²/s

✅ Maximum body working pressure: 1.5 MPa

✅ Proof pressure: 3 MPa

✅ Maximum differential pressure with air: Approximately 0.7 MPa

✅ Maximum differential pressure with water/kerosene: Approximately 0.2 MPa

✅ Maximum differential pressure with oil: Approximately 0.4 MPa

✅ Fluid temperature: -10 to +40°C, non-freezing

✅ Ambient temperature: -20 to +50°C

✅ Insulation class: Class B

✅ Solenoid voltage: According to ordered configuration

Advantages

✅ Normally closed 2/2 configuration

✅ Direct-acting structure

✅ Common Rc1/4 connection

✅ 3mm orifice for low- to medium-flow applications

✅ Suitable for multiple compatible fluids

✅ Multiple solenoid-voltage options

✅ Compact and easy to install

Applications

✅ Pneumatic control systems

✅ Water supply equipment

✅ Fluid processing equipment

✅ Industrial machinery

✅ Oil-control systems

✅ Industrial automation

✅ Packaging machinery

✅ Assembly machines

✅ Air and water control equipment

Hotline: 0084 787900099