Time Delay Valve
Brand :
FESTO
Caution
Product Description
Time delay valve.
[Features]
·The time delay valve consists of a pneumatically actuated 3-way valve and an upstream flow control valve with additional volume.
The delay in the valve actuation is dependent on the setting of the flow control valve.
It is reset via a mechanical spring.
[Materials]
·Housing: Die-cast zinc
·Seals: NBR
Time Delay Valve
Features
Specifications
| Type | VZ | VZO |
|---|---|---|
| Pneumatic port | PK-3 | |
| Nominal width [mm] | 2 | |
| Design | Poppet valve with spring return | |
| Type of actuation | Pneumatic | |
| Type of mounting | Front panel mounting | |
| On mounting frame | ||
| Mounting position | Any | |
| Valve function | 3/2-way valve, closed, monostable | 3/2-way valve, open, monostable |
| Lap | Underlap | |
| Manual override | None | |
| Exhaust-air function | With flow control | |
| Type of control | Direct | |
| Pilot air supply | External | |
| Direction of flow | Non-reversible | |
| Sealing principle | Soft | |
| Adjustable delay time [s] | 0.25 to 5 | |
| Pause period for reset [ms] | ≥ 55 | ≥ 50 |
| Repetition accuracy of time setting [s] | ±0.5 | |
Operating and environmental conditions
| Operating pressure [bar] | 2.5 to 8 |
|---|---|
| Operating/pilot medium | Compressed air to ISO 85731:2010 [7:4:4] |
| Note on operating/ pilot medium | Lubricated operation not possible |
| Note on forced checking procedure | Switching frequency at least 1/week |
| Ambient temperature [℃] | -10 to +60 |
| Temperature of medium [℃] | -10 to +60 |
Materials
| Housing | Die-cast zinc |
|---|---|
| Seals | Nitrile rubber |
| Note on materials | RoHS-compliant |