AB21 is a direct acting poppet 2-port solenoid valve that is NC (open when energized). It is used for air, water, kerosene and oil, with Rc1/8 and Rc1/4 ports. The body is aluminum as standard, and a copper alloy body is selected for water.
| Working Fluid | Air / water / kerosene / oil (50 mm²/s or less) |
| Valve Structure | Direct acting poppet, NC |
| Working Pressure Differential | 0 to 1.5 MPa (refer to max. working pressure differential in individual specifications) |
| Max. Working Pressure | 1.5 MPa |
| Proof Pressure | 3 MPa (water pressure) |
| Fluid Temperature | -10 to 40 °C (no freezing) |
| Ambient Temperature | -20 to 50 °C |
| Thermal Class | Class 130 (B) |
| Valve Seat Leakage | 0.2 cm³/min (ANR) or less |
| Port Size | Rc1/8, Rc1/4 |
| Orifice Size | 1.5, 2, 3, 4 mm |
| Body/Seal Material | Aluminum / NBR (standard, for air/kerosene/oil), aluminum / FKM (option); copper alloy / NBR or FKM (option, for water) |
| Weight | 0.23 kg (aluminum), 0.36 kg (copper alloy) |
| Rated Voltage | 100 VAC, 200 VAC, 24 VDC (100 VAC also usable at 110 VAC (60 Hz), 200 VAC also usable at 220 VAC (60 Hz)) |