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Diffusion pumps

Edwards’s range of high throughput diffusion pumps have many advantages in industrial applications. The pumps, in back to back testing, are comparable to the best leading competition but also incorporating the above benefits. To offer even higher pumping speeds, of up to 45000 m3h-1 at pressures intermediate between mechanical boosters and diffusion pumps Edwards can supply our industrially proven vapour booster pumps.

A constant program of updates and improvements, with input from OEM’s and end users, ensures that the vapour boosters always meet the requirements of the industry. This combined with inherent reliability, ease of use, ease of maintenance and tolerance to a wide range of inlet and exhaust pressures means they have been used extensively in metallurgy and coating industries as well as many other specialist applications.

Vapour pumps

Pompa dyfuzyjna dla przemysłu lekkiego

Scientific and R&D applications require special vapour pumps and accessories. It is important to minimise any backstreaming of the vapour pump fluid, and the number of elastomer seals used in system design needs to be kept to a minimum, to give clean pumping with minimal outgassing. For bench-top or transportable instruments, compact air-cooled pumps are essential.

They are supplied in two types: standard, and unvalved (C-collar model pumps). The Edwards Diffstak 63 (ISO 63 inlet), 100 (ISO100 inlet), 160 (ISO160 inlet), 250 (ISO250 inlet), design has been proven over many years with thousands of pumps installed.

For example Santovac® 5  have ultimate pressure 5 × 10‑9 mbar.

Features and Benefits
  • Integral high vacuum valves and water-cooled baffles which are supplied as either manually operated (M-model pumps) or pneumatically operated (P-model pumps)
  • For systems requiring the highest possible ultimate vacuum or for those which do not need a high vacuum valve
  • Both M-model and P-model pumps have inlet flanges which are compatible with ISO flanges
  • M‑model pumps have a manually operated high vacuum valve
  • P-model pumps have a pneumatically operated high vacuum valve
Applications
  • Vacuum metallurgy
  • Distillation, drying and degassing
  • Thin film coating and metalizing
  • Large-scale research

Vapour Booster pump

Pompa dyfuzyjna Booster

Vapour Booster pumps offer higher pumping speeds, of up to 15 000 ls-1 at pressures intermediate between mechanical boosters and diffusion pumps. Vapour boosters from Edwards have been proven in the field for over 30 years. With a constant program of updates and modernisation, with input from OEM’s and end users, combined with inherent reliability, ease of use and tolerance to various inlet and exhaust pressures they have been used extensively In metallurgy and coating industries as well as other specialist applications.

Features and Benefits
  • Very large pumping speed at high operating pressures
  • Very high throughput at operating pressures
  • Quick crossover for excellent pump-down times
  • Industry proven for over 40 years
  • Excellent reliability
Applications
  • Vacuum metallurgy
  • Distillation, drying and degassing
  • Thin film coating and metalizing
  • Large-scale research

HT diffusion pumps

Pompa dyfuzyjna HT

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.

HT diffusion pumps can get minimum backing pump displacement for maximum through put from 135 m3h-1 to 250 m3h-1 and ultimate vacuum to 5 x 10-7 mbar.

Features and Benefits
  • Highest throughput of comparative sized pumps
  • Earliest crossover pressure of similar sized pumps
  • Excellent maximum backing line pressure and tolerance to gas surges
  • Comparative pumping speed to similar sized pumps
  • Integral cold cap for best performance and low back streaming
  • Self fractionating for low ultimate pressures
  • Easy change heater assembly
Applications
  • Vacuum metallurgy
  • Distillation, drying and degassing
  • Thin film coating and metalising
  • Large-scale research