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 63 (ISO 63 inlet) design has been proven over many years with thousands of pumps installed.
This pump has a pneumatically actuated high vacuum isolation valve and is supplied with: NW10 elbow, NW10 centering-ring, NW10 clamp, water pipe couplings and ferrules, inlet ISO 63 Co-Seal.
Technical Data
| Pumping speed | |
| nitrogen | 135 l s-1 |
| hydrogen | 200 l s-1 |
| Min backing pump displacement* | 5 m3h-1 |
| Recommended backing pump | RV5 |
| Recommended fluid | Santovac® 5 |
| Fluid charge (dry) | 60 ml |
| Inlet connection compatible with | ISO63 |
| Backing connection | NW10 |
| Cooling water connection | 6 mm compression fittings |
| Heater power | 0.45 kW |
| Min cooling-water flow at 20°C | 42 l h-1 |
| Pneumatic connections | 6 mm coupling x ¼” BSP male stud |
| Pneumatic actuating pressure | |
| Minimum | 2.4 bar / 35 psi |
| Maximum | 6.9 bar / 100 psi |
| Weight | 9 kg |
* For maximum throughput. For applications where maximum throughput is not required, use an RV3.
US 18818 
GB 13705 
CA 11332 
AU 10343 
IE 3984 
NZ 2221 
BR 2027 
IN 1090 
