Scientific Equipment Source
4-555 Wentworth Street East
Oshawa, ON, L1H 3V8
Tel: 905-231-0930
Fax: 905-231-0944


Vapor Diffusion Pumps - Diffstak 160, Refurbished

The patented, 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 Diffstak design has been proven over many years with thousands of pumps installed.

The standard Diffstak pumps have integral high vacuum valves and water-cooled baffles. The valves on this P-model pumps are pneumatically operated where as the Diffstak M-model pumps have manually operated valves.

When comparing pumping speeds, note that the speeds quoted for valved Diffstaks are the speeds above the high vacuum valve, taking full account of the valve's impedance.

Features and Benefits Compact design

  • High performance
  • Low liquid loss
  • Fast heat up cool down
  • Idea for high vacuum applications

Applications UHV systems

  • Laboratory vacuum
  • Mass spectrometry and gas analysis
  • Thin film coating
  • Surface physics


Pumping speed



700 ls-1


1300 ls-1

Minimum backing pump displacement*

12 m3h-1

Recommended backing pump

RV12 or E2M18

Recommended fluid

Santovac 5

Fluid charge (dry)

255 ml

Inlet connection compatible with


Backing connection


Cooling water connection

6 mm compression fittings

Heater power

1.35 kW

Minimum cooling-water flow at 20 C

115 lh-1

Pneumatic connections

6 mm coupling x BSP male stud

Pneumatic actuating pressure



2.4 bar (35 lbfin-2)


6.9 bar (100 lbfin-2)




26 kg


27 kg


If you are a bargain hunter please give us a call, we always have instruments in stock, which have not been refurbished and can be sold as is in working condition.

Scientific Equipment Source provides service and training on site in most of central Ontario this includes neighboring cities Ajax, Whitby, Pickering, Oshawa, Toronto, Mississauga. We can also provide training and courses on site on chromatograph (GC), HPLC in the Durham region; this includes Pickering, Ajax, Whitby, Oshawa. For other customers we can be also flexible on arrangements. For the rest of customer any equipment for repair has to be sent back by a courier.