VIV Edwards KF25 Isolation Valve for nXDS Vacuum Pumps
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Manufacturer: Edwards
VIV Edwards KF25 Isolation Valve for nXDS Vacuum Pumps
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The VIV protects the process chamber from being vented when the pump stops or is stopped. When the backing pump is restarted, the valve will slowly open when the pressure within the VIV has dropped, minimising the effects of any pressure burst. Product Data Sheet
Features and Benefits
· VIV valves have high conductance Does not restrict primary pump performance· Fast closing action Prevents migration of vapour or particulates from the backing pump to the process chamber
· Power failure protection Prevents process chamber venting in the event of a power supply failure
· Flexible installation options For Edwards backing pumps fitted with the M8 valve connector or the 15 way D Type logic interface connector, Edwards recommends the use of 24V dc valves and optional accessory cable or VIV
| Model | Edwards VIV25EKA |
| Inlet / Outlet Flange | DN 25 ISO-KF (NW25) |
| Actuation | Solenoid / electromagnetic |
| Body Material | Aluminum |
| Seal Material | FKM |
| Leak Rate | 1.000 × 10⁻¹⁰ Pa·m³/s |
| Leak Rate Across Seat | 1.000 × 10⁻⁸ Pa·m³/s |
| Max Pressure Differential | 200 mbar |
| IP Rating | IP65 |
| Operating Ambient | 5 to 50 °C |
| Weight | 0.500 kg (1 lb) |
| Compatible Pumps | Edwards nXDS, XDS, nXLi, nXRi dry primary pumps |
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