Product data sheet
Valve
B2705-0401-5278-PW,
December 15, 2025
Seat Valve electrically force-controlled
Series 27-04
Valve B2705/0401/5278-PW AC
Solenoid valve for gases and solid-free liquids. The seal at the valve seat is made by a rubber diaphragm. Force-operated solenoid valves can be used where direct-acting valves are required. The valves operate from 0 bar pressure difference and combine the advantages of servo- and direct-acting valves. An unusually large variety of options make the 27 series with flange connection the specialist 'par excellence'.
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Valve B2705/0401/5278-PW AC
Datasheet explicit
| Version | B | |
| Type of valve | 27 | Seat Valve electrically force-controlled |
| Connection type, valve seat | 05 | DN40 40mm |
| Kv-value (Δp = 1 bar H₂O) | 22 m³/h | |
| Housing | 04 | EN-GJL250 grey cast |
| Sealing | 01 | NBR |
| Voltage type | 5 | AC |
| Solenoid power | 27 | 47W |
| Protection class | 8 | Ex II 2G Ex e mb IIC T4 Gb (Zone 1) |
| Valve option | PW | normally open + Flanges Class ASME / ANSI 150 B16.5 (according to DIN EN1092 not applicable) |
| Pressure rating | PN16 | |
| System pressure | 0 - 16 bar | |
| Valve type | 12V, 24V, 48V, 110V, 120V, 220V, 230V, AC | |
| Temperature Medium | from -10 °C to 40 °C | |
| Temperature Environment | from -10 °C to 40 °C | |
| Mounting position | Pipeline horizontal, Actuator vertical up | |
| Specific use case | Closed system (includes open system) | |
| scope of delivery | 1 valve, 1 Solenoid .278 Steel K05927XX | terminal box M16x1,5 | 100%ED | Cable clamping range 6.5 - 9.5mm | Duty cycle 100% | Valve MatchCode G0xx.xxxxxx.0xx.099.0xx | Gas: Ex II 2G Ex e mb IIC T4 Gb | Dust: Ex II 2D Ex mb tb IIIC T130°C Db |
| Valve option | PW | normally open + Flanges Class ASME / ANSI 150 B16.5 (according to DIN EN1092 not applicable) |
| Description | Valve closes with continous voltage | Valve length according to EN 558-1 R1 | |
| Leakage rate | A - EN 12266-1 [Test medium air or nitrogen, 20°C room temperature] | |
| REACH-RoHS conformity | REACH Yes | RoHS Yes | |
| Customs export | Customs tariff number 84818071; Country of origin Germany; ECCN (US): N; AL: N |