There are 2 types available, VSM and VSMR.
The only difference between this 2 types is that VSM model needs to have vacuum release valve but VSMR type does not need vacuum release valve due to the VSMR has integarated automatic quick release valve option, yet the workpiece can be released very fast, thanks to the built-in inflow device which allows the inflow of atmospheric air to break the vacuum.
If you are using more than one suction cups for pick and place, VSMR model has the added advantage that in case one or more of the suction cups is/are not picking up the goods, the vacuum for the rest of the cups are not affected. Because of this added feature, the VSMR model is suitable for picking goods of different sizes.
For more detailed information, please contact: www.vmeca.com/ [email protected]
And you can see the its demo-movies at http://www.youtube.com/watch?v=a8qq_KMonwc