Product data sheet
Valve
B7621-1701-4128-HN,
December 18, 2024
Seat Valve Electrically servo-assistent
Series B7620/1701 - B7624/1701
Valve B7621/1701/4128-HN DC
3/2-way piston spool valve with differential piston and optional additional spring for piston return. The valve is normally closed from 1 to 2 and open from 2 to 3. The special feature of the B76 series is the mechanical return spring, i.e. the piston spool is returned to the rest position in the event of a pressure failure. On request, outlet 3 can be equipped with an exhaust air throttle.
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Valve B7621/1701/4128-HN DC
Datasheet explicit
| Version | B | |
| Type of valve | 76 | Seat Valve Electrically servo-assistent |
| Connection type, valve seat | 21 | G1/4 7mm |
| Kv-value (Δp = 1 bar H₂O) | 1.2 m³/h | |
| Housing | 17 | aluminium AL anodised |
| Sealing | 01 | NBR |
| Voltage type | 4 | DC |
| Solenoid power | 12 | 4,8W |
| Protection class | 8 | Ex protection |
| Valve option | HN | NO (P-A) + Manual override |
| System pressure | 2 - 10 bar | |
| Valve type | 12V, 24V, 48V, 110V, 120V, 220V, 230V, DC | |
| Temperature Medium | from -10 °C to 50 °C | |
| Temperature Environment | from -10 °C to 50 °C | |
| Mounting position | in any position | |
| Specific use case | Open system, Pressure difference Yes | |
| scope of delivery | 1 valve, 1 Solenoid .128 Thermoplast | IP67 | 100% ED | Terminal box | cable gland M20x1.5 4x90° rotatable | |
| Valve option | HN | NO (P-A) + Manual override |
| Description | Opened with spring force from P to A. Closes with continuous Voltage | In opposite flow direction up to max. 16 bar closing | manual override | Operation with screwdriver | |
| REACH-RoHS conformity | REACH Yes | RoHS Yes | |
| Net weight | 0.3 kg | |
| Switching time (at 6 bar gas) | On: 14 ms | Off: 20 ms | |
| Customs export | Customs tariff number 84818059; Country of origin Germany; ECCN (US): N; AL: N |