61B 5HR CE 18.5kW

Edwards Process Isolation Boosters are designed to be used in conjunction with rotary-piston, liquid ring, rotary vane and dry vacuum pumps to increase pumping speed at working pressures and shorten pump down time significantly. The Process Isolation Boosters can be mounted separately or on the inlet of the backing pump to create a compact integrated package.

Featuring an extra large diameter shaft, the 6” Process Isolation Boosters has the capability for use with higher powered motors in addition to ensuring a uniquely rugged and durable mechanical booster. This allows the pumps to operate at their full displacement from atmospheric pressure with an appropriately sized backing pump.

In addition, the 61B Process Isolation Booster is available with bypass technology which further enhances your productivity while also assuring consistent, reproducible vacuum processing. The bypass valve limits the maximum differential pressure, enabling the booster to start from atmosphere and provide increased pumping capacity over the full pressure range. Eliminating the electrical pressure switch insures continuous booster operation regardless of vacuum level.

To enhance sealing the Process Isolation Boosters have 5 mechanical shaft seals for optimum protection from dust and particulate contamination in arduous duty applications.

The Process Isolation Boosters must be backed by a primary vacuum pump designed to discharge to atmospheric pressure. Examples of suitable backing pumps are listed below:

  •     GV Drystar or Chemical Drystar dry pumps
  •     Two stage LR series liquid ring pumps
  •     RV, EM or EVC oil sealed pumps
  •     Microvac series piston pumps



Features and Benefits

  •     5 Mechanical shaft seals offer improved life and serviceability and prevent contamination from dust and particulates
  •     Ringfeder® keyless gear locking system provides stronger, faster timing
  •     Drive end roller bearing which resists belt pull and thermal effects
  •     Over-sized anti-friction bearings allows increased uptime and longer service intervals
  •     Horizontal gas flow configuration
  •     Belt drive or Direct drive capability
  •     Rugged proven design and construction
  •     Large shaft diameters allowing improved performance at high pressures
  •     Quiet operation
  •     Unique impeller design which is dynamically balanced to minimize vibration
  •     High volumetric efficiency
  •     High differential pressure offering operation capability
  •     Bypass technology to increase pumping capacity


  •     Automotive
  •     Chemical processing
  •     Heat treatment
  •     Leak detection
  •     Metallurgy
  •     PET processing
  •     Pharmaceuticals
  •     Thermal processing
  •     Transformer drying and cable fluid conditioning
  •     Vacuum coating
  •     Vacuum melting
  •     Many other industrial applications
Dane techniczne
Horizontal flow Vertical flow
Displacement V belt (2750 rpm) 3375m3h-1 / 2000ft3min-1 3375m3h-1 / 2000ft3min-1
Displacement direct drive (3600 rpm) 4420m3h-1 / 2600ft3min-1 4420m3h-1 / 2600ft3min-1
Inlet/outlet flanges 8” ASA/ANSI flange 8” ASA/ANSI flange
Motor option US TEFC 25 hp 25 hp
By-pass available Yes Yes
Cooling water 7.6-11.4l min-1 / 2-3gal min-1 7.6-11.4l min-1 / 2-3gal min-1
Oil capacity 1.9liter / 4.1gal 4.1liter / 8.8gal
Max temp rise 135°C / 275°F 135°C / 275°F
Max discharge temp 191°C / 375°F 191°C / 375°F
Foot print TEFC direct drive (L x W x H) 1369 x 543 x 757mm / 53.9 x 21.4 x 29.8in 1369 x 757 x 543mm / 53.9 x 29.8 x 21.4in
Weight TEFC direct drive 538kg / 1185lbs 538kg / 1185lbs