Edwards Diffstak 63/150C - NEW

Call for Price

In stock
Weight 11 lbs
Pumping Speed 150 l/s-1
Ultimate Pressure 1300 mbar

Edwards Unvalved Diffstak 63/150C Vapour Diffusion Pump - NEW

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. 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: NW-10 elbow, NW-10 centering-ring, NW-10 clamp, water pipe couplings and ferrules, inlet ISO-63 Co-Seal.

Questions? Please call our toll free number at 866-332-0500 or send an email to our sales team!

Pumping speed  
N2 150 l/s
H2 225 l/s
Min. backing pump displacement 5 m3h-1
Recommended backing pumping RV5
Recommended fluid Santovac 5
Fluid charge (dry) 60 ml
Inlet ISO-63
Exhaust NW-10
Cooling water connection 6 mm compression fittings
Heater power 0.45 kW
Minimum cooling-water flow at 20°C 42 l/s
Weight 5 kg


Type Label Description Download
Edwards Diffstak Series - NEW Instruction Manual Download

Need modifications to this item? PTB Sales' expert team of engineers can configure products to your specific needs.

Edwards Unvalved Diffstak 63/150C Vapour Diffusion Pump - NEW

B34433976 / B344-33-976  110-125V single-phase 50/60Hz
B34433977 / B344-33-977  210-225V 1-phase 50/60Hz
B34433978 / B344-33-978  230-250V 1-phase 50/60Hz