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 160 (ISO160 inlet) design has been proven over many years with thousands of pumps installed.

This pump is unvalved and has a copper compression gasket flange (ConFlat^®).

Pumping speed
nitrogen	760 l s-1
hydrogen	1410 l s-1
Min backing pump displacement*	12 m3h-1
Recommended backing pump	RV12 or E2M18
Recommended fluid	Santovac® 5
Fluid charge (dry)	250 ml
Inlet connection
160/700C	ISO160
160/700F	8 inch
Backing connection	NW25
Cooling water connection	10 mm compression fittings
Heater power	1.35 kW
Min cooling-water flow at 20°C	115 l h-1
Weight
160/700C	18kg
160/300F	20kg

* For maximum throughput