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18B4B, Edwards, 240-250V

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18B4B, Edwards, 240-250V 18B4B Vapour Booster Pump Vapour Booster Pumps EDWARDS Oil Vapor Diffusion Pumps
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Overview

The Edwards 18B4B vapour booster pumps offer higher pumping speeds, of up to 6000 l s-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.

Technical Data

Pumping speed  
air 4000 ls-1
hydrogen 6000 ls-1
Maximum throughput 100 mbar ls-1 /
  75 Torr ls-1
Critical backing pressure 2-2.6 mbar /
(with AP201 fluid) 1.5-2 Torr
Recommended backing pump displacement 190 m3h-1 /
  112 ft3min-1
Recommended backing pump GXS450, E2M275
Recommended fluid Apiezon® AP201
Fluid charge 10 litre / 9.5 qt
Inlet connection 8x11mm holes on 387.4 PCD (Edwards) /
  ANSI 12 inch / ISO320
Backing connection 2 inch union (Edwards) /
  ANSI 4 inch / ISO160
Water connection -
Heater power 6.0 kW / 8 hp
Warming up time for full performance at  
maximum heater input 60 min
Minimum water flow inlet 375 @ 25 ⁰ C/1.6 US gal min-1 @25 ⁰ C
Water block threaded hole ½ inch BSP
Weight 165 kg / 365 lbs
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