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	18000 ls-1
ISO pumping speed†
Nitrogen	8000 ls-1
Helium	16000 ls-1
Max throughput (nitrogen)	24 mbar ls-1
	18 Torr ls-1
Critical backing pressure (with DC704)	1.3 mbar /
	1 Torr
Min backing pump displacement for max throughput	135 m3h-1
	80 ft3min-1
Recommended backing pump‡	GXS250, E2M175
Recommended fluid	DC704
Fluid charge (dry)	3600 ml / 3.8 qt
Inlet/backing connection	ANSI20/ANSI4 or
	ISO630/ISO160
Water connection	3/4 inch NPT female
Heater power	12.6 kW / 16.9 hp
Warm up time	60 min
Minimum cooling water flow at 25°C	960 l h-1 / 4.2 US gal min-1
Pressure drop across cooling water supply	1.2 bar / 17.4 psi
Weight	275 kg / 605 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.