 
            
            The compact water-cooled Diffstak pumps with an integral cooled baffle offer exceptionally clean pumping with very low backstreaming, reduced outgassing, and a reduction in the number of elastomer seals required for installation.
| Technical data | |
| Pumping speed | |
| nitrogen | 760 l s-1 | 
| hydrogen | 1410 l s-1 | 
| Min backing pump displacement* | 12 m3h-1 | 
| Recommended backing pump | RV12 or E2M18 | 
| Recommended fluid | Santovac® 5 | 
| Fluid charge (dry) | 250 ml | 
| Inlet connection | |
| 160/700C | ISO160 | 
| 160/700F | 8 inch | 
| Backing connection | NW25 | 
| Cooling water connection | 10 mm compression fittings | 
| Heater power | 1.35 kW | 
| Min cooling-water flow at 20°C | 115 l h-1 | 
| Weight | |
| 160/700C | 18kg | 
| 160/300F | 20kg | 
* For maximum throughput
