What is the difference between a vacuum pump and a blower?
A vacuum pump creates negative pressure – it removes air or gas from a space or system. A blower delivers large volumes of air at low overpressure, usually up to 1,000 mbar(g). Many blowers (side channel, rotary lobe) can also run on vacuum, but they do not reach as low an ultimate pressure as vacuum pumps.
Which vacuum pump should I choose?
The key factors are the required ultimate pressure and the type of medium. For rough vacuum with dry air, dry rotary vane or claw pumps are enough; for fine vacuum, oil-lubricated rotary vane or dry screw pumps; for wet and contaminated gases, liquid ring pumps. For very low pressures and large flows we add a booster.
When should I choose an oil-free (dry) vacuum pump?
When the exhaust must be free of oil mist, when you want less maintenance (no oil changes), or when you pump media that would contaminate the oil. Dry claw, vane and screw pumps are common in food, pharmaceutical, woodworking and plastics industries.
Elmo Rietschle or Robuschi – which manufacturer is right?
Elmo Rietschle covers almost every vacuum technology and compact blowers for machines and production lines. Robuschi is stronger in higher-power low-pressure blowers – for wastewater plants, pneumatic conveying and biogas – and in large liquid ring pumps. Both belong to Ingersoll Rand, so solutions can also be combined.
What is a vacuum booster and when do I need one?
A booster (Roots blower) is installed upstream of the main vacuum pump. At low pressures it multiplies pumping speed and deepens the ultimate vacuum down to 0.001 mbar (abs.). It is used when you want shorter evacuation times or more flow without a bigger backing pump.
Can we cut the energy use of a vacuum system?
Yes. The biggest savings come from speed control (VSD), a central vacuum system instead of many individual pumps, and correct sizing. SVT screw vacuum pumps with set-point control use up to 50% less energy, and Robox Energy screw blowers are more efficient than conventional rotary lobe blowers.
What information do you need for a quotation?
Required flow (m³/h), target vacuum or pressure, type of medium (dry air, vapour, dust, solvents), duty cycle and any ATEX requirements. If you don't have the data, describe the process or send us the nameplate of your existing pump – we will help find a suitable replacement.
Do you service vacuum pumps and blowers?
Yes. We carry out regular maintenance and repairs and supply original spare parts for Elmo Rietschle and Robuschi vacuum pumps and blowers – oil, filters, vanes, bearings and seals.
