FWB is a direct acting 2-port solenoid valve dedicated to water. It comes in NC (open when energized, FWB21 to 51) and NO (closed when energized, FWB32, 42, 52) types, with Rc1/8 to Rc1/2 ports. It is not for sewage, agricultural water or liquid manure.


| Working Fluid | Water (excluding sewage, agricultural water and liquid manure) |
| Valve Structure | Direct acting poppet, NC / NO |
| Working Pressure Differential | 0 to 1.5 MPa (refer to the max. working pressure differential in the individual specifications) |
| Proof Pressure | 5.0 MPa (3.0 MPa for ø7 and ø10 orifice) (water pressure) |
| Fluid Temperature | AC 1 to 60 °C, DC 1 to 40 °C (no freezing) |
| Ambient Temperature | AC -20 to 60 °C, DC -20 to 40 °C |
| Thermal Class | Class 130 (B) |
| Valve Seat Leakage | 0 cm³/min (water pressure) |
| Degree of Protection | IP65 or equivalent (IP61 or equivalent for T type terminal box) |
| Port Size | Rc1/8, Rc1/4, Rc3/8, Rc1/2 |
| Orifice Size | 1~10 mm |
| Weight | 0.15~0.8 kg |
| Mounting Orientation | Unrestricted |
| Rated Voltage | 100 VAC, 200 VAC, 24 VDC, 12 VDC (100 VAC also usable at 110 VAC (60 Hz), 200 VAC also usable at 220 VAC (60 Hz)) |