Protection for Your Vacuum System
The VPI is electrically connected in parallel with your mechanical pump, and closes rapidly when power is interrupted to prevent oil backstreaming or
particle migration into your vacuum system. The valves also vent the pump from the inlet side to push any debris towards the outlet, thereby preventing it from being swept into the system when pumping is restarted. The body design and right-angle configuration provide maximum conductance.
Features
-Lock-over-center mechanism
-Fast-acting: valve closes in less than 30 milliseconds
-Provides venting of the pump at the pump inlet
-Remains closed until pump inlet pressure returns to system pressure
-Operates with atmospheric pressure and is activated upon loss of electrical power
-Provides maximum conductance
Specifications
| Materials |
Body: 6061-T6 aluminum Piston:2024 aluminum Seals: viton |
| Leak rate | Body and seal:<1x10-9 std cc/sec He |
| Closing Time | <30 milliseconds |
| Power | 7 watts @ 115 VAC |
| Conductance | NW25 - 13 l/s NW40-33 l/s |
| Temperature range | Valve: 0° to 100 ° C, Solenoid 0° to 50° C |
Benefits
-Reliabe, repeatable seals
-Immediate protection of your vacuum system from oil or contaminant migration in the event of power failure
-Flow direction is maintained; oil/ debris are not swept into the system
-Continued protection and easy restart
-No compressed air required for operation
-No reduction of pumping speed
