Diffstak 63/150C

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 (ISO63 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 has an unvalved ISO collar inlet flange and is supplied with: NW10 elbow, NW10 centering-ring, NW10 clamp, water pipe couplings and ferrules, inlet ISO 63 Co-Seal.

Dane techniczne
Pumping speed  
          nitrogen 150 l s-1
          hydrogen 225 l s-1
Minimum 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
Minimum cooling-water flow at 20 °C 42 l h-1
Weight 5 kg

* For maximum throughput