Overview

The HT high throughput series is the pinnacle of our diffusion pump knowledge with technology aimed specifically at industrial users. Edwards diffusion pump is designed for all light and heavy duty industrial applications. The robust construction gives high pumping speed at high pressure. The cast and machined aluminium interior provides consistent performance, while the stainless steel body prevents corrosion and ensures process cleanliness. These pumps are designed to give a high throughput (pressure multiplied by pumping speed) at 4 × 10-3 mbar making them ideal for industrial processes that involve large quantities of gases.

Technical Data

Comparative pumping speed	4650 ls-1
ISO pumping speed†
Nitrogen	3000 ls-1
Helium	4650 ls-1
AVS pumping
Nitrogen	3330 ls-1
Helium	5165 ls-1
Maximum throughput (nitrogen)	10 mbar ls-1
	7.5 Torr ls-1
Critical backing pressure (with DC704)	1.1 mbar
	0.8 Torr
Minimum backing pump displacement for maximum throughput	60 m3h-1
	35 ft3min-1
Recommended backing pump‡	GV80, E2M80
Recommended fluid	DC704
Fluid charge (dry)	1250 ml
	1.3 qt
Inlet/backing connection	ANSI10/ANSI12 or EO12 inch/EO130 mm or ISO320/ISO63
Water connection	3/8 inch NPT female
Heater power	5.1 kW
	6.8 hp
Warm up time	30 min
Minimum cooling water flow at 25°C	400 l h-1
	1.8 US gal min-1
Pressure drop across cooling water supply	1 bar
	14.5 psi
Weight	80 kg
	176 lbs

† ISO speed and throughout data obtained with total pressure measurement. Partial pressure readings typically increase data by ~30%. ISO speed measurements are typically 10% less than AVS measurements for the same pump.
‡ These are given for guidance, please contact Edwards for a recommendation of pump combinations best suited to your application.