
SMC ADH400004 (ADH4000-04) - Heavy Duty Automatic Drain, Rc1/2 N.O., Heavy Duty Auto Drain
SMC ADH400004 Heavy Duty Automatic Drain — Heavy duty float-type auto drain (N.O.), Rc1/2 female port, no electric power required. SMC ADH4000-04 heavy duty automatic drain valve with a 1/2 inch female (Rc/PT) port. Uses a float style mechanism (normally open, opens on pressure loss) to discharge condensate automatically without electric power and without wasting air. Designed for installation downstream of after-coolers, air tanks and air dryers; easy maintenance without changing existing piping. Operating pressure range 0.05 to 1.6 MPa, max operating pressure 1.6 MPa, proof pressure 2.5 MPa, ambient/fluid temperature 5 to 60 C (no condensation). Max drain discharge 400 cc/min (at 0.7 MPa, water). Aluminium alloy body, weight 1.2 kg (1.3 kg with bracket). Optional bracket set (BM58) and ball valve piping set (ADH-C400) available.
MPN: ADH4000-04 · SKU: ADH400004
ADH4000-04 Applications
Automatic condensate drainage for air tanks, after-coolers and air dryers in compressed air systems, no electrical supply required.
ADH4000-04 Specifications
| Brand | SMC | Manufacturer Part No. | ADH4000-04 |
| Product Type | Heavy Duty Automatic Drain | Series | ADH4000 |
| Port Size | Rc1/2 (04, female thread) | Drain Type | Float type, N.O. (open on pressure loss) |
| Fluid | Compressed air | Operating Pressure Range | 0.05 to 1.6 MPa |
| Max Operating Pressure | 1.6 MPa | Proof Pressure | 2.5 MPa |
| Max Drain Discharge | 400 cc/min (0.7 MPa, water) | Body Material | Aluminum alloy |
| Weight | 1.2 kg (1.3 kg with bracket) | Ambient/Fluid Temperature | 5 to 60 C (no condensation) |
ADH4000-04 Datasheet & Manual
Download Datasheet & ManualSMC ADH400004 · PDF · Official SMC documentTrusted by




