on-off valve HEL-3/4-D-MIDI-NPT Used in conjunction with service units for gradual pressure build-up. The valve function is equivalent to a 2/2-way valve. Grid dimension=55 mm, Exhaust-air function=throttleable, Type of actuation=pneumatic, Sealing principle=soft, Assembly position=Any
| Grid dimension | 55 mm |
|---|---|
| Exhaust-air function | throttleable |
| Type of actuation | pneumatic |
| Sealing principle | soft |
| Assembly position | Any |
| Manual override | None |
| Design structure | Piston slide |
| Type of reset | mechanical spring |
| Type of piloting | direct |
| Flow direction | non reversible |
| Valve function | 2/2 closed, monostable |
| Operating pressure | 3 … 16 bar |
| b value | 0.48 |
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