Overview
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.
The Edwards Diffstak (ISO100 inlet) design has been proven over many years with thousands of pumps installed. The unvalved Diffstak's are for systems requiring the highest possible ultimate vacuum or for those which do not need a high vacuum valve.
This pump is unvalved and has a copper compression gasket flange (ConFlat®).
* For maximum throughput
The Edwards Diffstak (ISO100 inlet) design has been proven over many years with thousands of pumps installed. The unvalved Diffstak's are for systems requiring the highest possible ultimate vacuum or for those which do not need a high vacuum valve.
This pump is unvalved and has a copper compression gasket flange (ConFlat®).
Technical Data
| Pumping speed | |
| nitrogen | 300 l s-1 |
| hydrogen | 535 l s-1 |
| Min backing pump displacement* | 5 m3h-1 |
| Recommended backing pump | RV5 or RV8 |
| Recommended fluid | Santovac® 5 |
| Fluid charge (dry) | 125 ml |
| Inlet connection compatible with | ISO100 |
| Backing connection | NW25 |
| Cooling water connection | 6 mm compression fittings |
| Heater power | 0.65 kW |
| Min cooling-water flow at 20°C | 60 l h-1 |
| Weight | 9 kg |
* For maximum throughput
US 7433 
GB 7420 
CA 6765 
AU 6417 
IE 4825 
NZ 1187 
BR 978 
MX 412 
