AD21E4 is NC (open when energized) and AD22E4 is NO (closed when energized) in this diaphragm drive pilot operated poppet 2-port solenoid valve series with pressure and explosion proof construction (d2G4). They are used for air, water, kerosene and oil, with ports from Rc1 1/4 to Rc2 and 32 to 50 flange.
| Working Fluid | Air / water / kerosene / oil (50 mm²/s or less) |
| Valve Structure | Pilot operated poppet, diaphragm drive, NC (open when energized: AD21E4) / NO (closed when energized: AD22E4) |
| Explosion Protection | Pressure and explosion proof construction d2G4 (flame-proof grade 2 / ignitability G4) |
| Explosion-Proof Certification Bodies | Japan certification (TIIS) or China certification (NEPSI), selected by order code (blank = TIIS, CN = NEPSI) |
| Certification Numbers | Japan Conformity Certificate No.: AD21E4 No. T64349, AD22E4 No. T64352; China Conformity Certificate No. 2020322307003155; China explosion-proof standard NEPSI acquired: GYB20. 2593X |
| Atmosphere | Outdoors / explosive gas (flame-proof grade 1 to 2 / ignitability G1 to G4) |
| Working Pressure Differential | 0.02 to 0.7 MPa (refer to max. working pressure differential by model) |
| Max. Working Pressure | 1 MPa |
| Proof Pressure | 3.2 MPa (water pressure) |
| Fluid Temperature | -10 to 60 °C (no freezing) |
| Ambient Temperature | -10 to 50 °C |
| Coil Thermal Class | Class 130 (B) |
| Valve Seat Leakage | 1 cm³/min or less (air, measured at 0.02 to 0.7 MPa for AD21E4 and 0.02 to 0.5 MPa for AD22E4) |
| Degree of Protection | IP65 or equivalent |
| Mounting Orientation | Free (within working pressure differential range) |
| Port Size / Orifice Size | AD21E4 and AD22E4: -32A Rc1 1/4, -32F 32 flange (ø35 mm); -40A Rc1 1/2, -40F 40 flange (ø43 mm); -50A Rc2, -50F 50 flange (ø53 mm). JIS B2210 10K flange; the companion flange is not enclosed with the product and must be purchased separately |
| Min. Working Pressure Differential | 0.02 MPa |
| Max. Working Pressure Differential by Model (MPa) | AD21E4: air AC 0.7 / DC 0.6, water and kerosene AC 0.7 / DC 0.6, oil AC 0.6 / DC 0.6; AD22E4: all fluids AC 0.5 / DC 0.5 (the DC column applies to the diode integrated coil) |
| Flow Characteristics | -32A and -32F: orifice ø35 mm, Cv 25, effective cross-sectional area 460 mm²; -40A and -40F: ø43 mm, Cv 34, 625 mm²; -50A and -50F: ø53 mm, Cv 53, 975 mm² |
| Body / Seal Material | Body: bronze (standard) or stainless steel; seal: NBR (standard) or FKM; oil-prohibited treatment options are available (combinations H, J, L, M) |
| Coil | Code 3: thermal class 130 (B) explosion-proof coil; code 5: thermal class 130 (B) diode integrated explosion-proof coil (the diode converts the AC power supply voltage into a DC coil voltage) |
| External Wire Pull Method | T (standard): conduit screw connection (G1/2) (1/2NPT when China certification is selected); L: pressure proof packing seal (G1/2) connection, cable O.D. ø7.5 to 8.4; M: pressure proof packing seal (G1/2) connection, cable O.D. ø8.5 to 9.4 |
| Options | Manual override (locking, available for AD21E4 only) |
| Rated Voltage | 100 VAC 50/60 Hz (also usable at 110 VAC 60 Hz), 200 VAC 50/60 Hz (also usable at 220 VAC 60 Hz) (options: 12 VDC, 24 VDC, 48 VDC, 100 VDC). Coil code 5 can be used with 100 VAC 50/60 Hz or 200 VAC 50/60 Hz |
| Apparent Power / Power Consumption | AD21E4: apparent power holding 18 VA (50 Hz) / 15 VA (60 Hz), starting 29 VA (50 Hz) / 24 VA (60 Hz), power consumption AC 50/60 Hz 8/7 W, DC 11.6 W; AD22E4: apparent power holding 22 VA (50 Hz) / 18 VA (60 Hz), starting 35 VA (50 Hz) / 29 VA (60 Hz), power consumption AC 50/60 Hz 8.7/6.7 W, DC 15.5 W |
| Weight | 32A: 4.0 kg, 32F: 7.5 kg, 40A: 5.0 kg, 40F: 8.5 kg, 50A: 6.5 kg, 50F: 10.5 kg (AD21E4 and AD22E4) |