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Stokes 1721S Mechanical Booster Pump Combination

Whether you need to increase the capacity of your existing system or achieve peak performance for a new installation; Edwards makes taking advantage of the latest technology easy. These field-proven pumping systems are the workhorse of countless industrial and large chamber applications. Each Stokes1700 series mechanical booster pump combination includes a Stokes Microvac backing pump and a belt driven, horizontal flow, high vacuum Stokes 6” series mechanical booster pump. In harsh applications where chemical or particulate contamination is present, process isolation boosters are available as an option. Controls for Stokes 1700 series mechanical booster pump combination include a pressure switch, motor starters, overloads, remote booster selection switch and lights for pump running and fault indication.

Multi-stage vacuum systems from Edwards combine a high capacity dry-lobe booster with a Microvac rotary piston pump. These combinations deliver the high capacity needed to achieve faster pump-downs. Most importantly, these systems achieve the task more cost effectively than larger single stage pumps. Depending on the specific application, they can improve blank-off by a factor of ten over large, single stage pumps. Pumping capacities range from 1300 to 7880 ft3min-1.


Features and Benefits

  • High capacity pumping combinations.
  • Proven oil sealed Microvac oil sealed piston pumps with high capacity direct drive 6” Stokes series mechanical booster pumps.
  • Flexible platform design.
  • Process isolation mechanical booster pump flexibility.
  • Harsh duty compatibility robust proven design.
  • Standard controls for the 1700 series high capacity mechanical booster pump combinations include a pressure switch, motor starters, overloads and lights for pump running and fault indication.
Dane techniczne
Booster displacement 2720 m3h-1 / 1600 ft3min-1
Booster speed 2200 rpm
Booster orientation Horizontal
Pump displacement 255 m3h-1 / 150 ft3min-1
Pressure switch required Yes
Normal cut-in pressure 13 mbar / 10 Torr
Continuous operation pressure limit 2.6 mbar / 2 Torr
Booster drive 7.5 kW / 10 hp
Pump drive (TEFC) 6.5 kW / 7.5 hp
Inlet connections 8 inch ASA/ANSI flange
Discharge connections 2 inch ASA/ANSI flange, 2 inch NPT
Water inlet/outlet connection ½ inch NPT
Recommended cooling flow @ 30ºC/85 ºF 5.7 lmin-1 / 1.5 galmin-1
Booster oil capacity (V lube H) 1.9 litre / 0.51 US gal
Microvac oil capacity (V lube F) 15 litre / 4 US gal
Inlet height 1035 mm / 40.75 inch
Footprint (L x W x H) 1419 x 919 x 1260 mm
  55.87 x 36.18 x 49.61 inch
Weight 1270 kg / 2800 lbs