Stokes 1739BP 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.
| Booster displacement | 4420 m3h-1 / 2600 ft3min-1 | 
| Booster speed | 3600 rpm | 
| Booster orientation | Horizontal | 
| Pump displacement | 510 m3h-1 / 300 ft3min-1 | 
| Pressure switch required | No | 
| Continuous operation pressure limit | 2.7 mbar / 2 Torr | 
| Booster drive | 22 kW / 30 hp | 
| Pump drive (TEFC) | 7.5 kW / 10 hp | 
| Inlet connections | 8 inch ASA/ANSI flange | 
| Discharge connections | 3 inch ASA/ANSI flange, 3 inch NPT | 
| Water inlet/outlet connection | ½ inch NPT | 
| Recommended cooling flow @ 30ºC/85 ºF | 7.6 lmin-1 / 2 galmin-1 | 
| Booster oil capacity (V lube H) | 1.9 litre / 0.51 US gal | 
| Microvac oil capacity (V lube F) | 46 litre / 12 US gal | 
| Weight | 1837 kg / 4050 lbs | 
