Twin Lobe Air Blower

Twin Lobe Air Blower

Roots Blower/Pumps means reliability, availability and maintainability. Rootech Services is committed to supplying our customers with reliable products manufactured with state of the art technologies. Production and inventory are being scheduled and controlled to ensure these units will be available when you need them. Rootech Services blowers are heavy duty rotary blowers designed with vertical and horizontal installation requirements. The compact study design is engineered for continuous service when operated in accordance with speed and pressure ratings. Antifriction bearings are used with roller bearings at the drive shaft to with stand v-belt pull. A complete range of standard Air blowers is available for flow rates from 25 m3/hr to 10,000 m3/hr in single stage and parallel configuration for working pressure range up to 1 kg/cm2. They are available as total package units , ready to install or as bare blower units for replacement.

Twin Lobe Air Blower



  •    Improved volumetric efficiency and reduced operating temperature
  •    Thrust control splashed oil lubricated spur timing gears
  •    Balanced,precision machined twin lobe impellers
  •    Low noise level, less operating power required
  •    Connections in standard pipe sizes
  •    Rigid one-piece cast iron casting
  •    Design for gas services
  •    Anti friction bearings


  •    Milling & Baking : Blending & Conveying
  •    Resin & Plastic : Processing & Conveying
  •    Power Generation : Fly Ash Conveying & Aeration
  •    Chemical : Vacuum Processing & Conveying
  •    Wastewater : Aeration & Backwashing
  •    Pulp & Paper : Chip Conveying, & Process Vacuum
  •    Cement & Lime : Fluidization & Conveying
  •    Oil & Gas : Gas Collection & Sparging
  •    Soil Remediation : Vacuum Extraction & Sparging
  •    Dry Bulk Handling : Trailer Unloading & Extraction
  •    Glass : Burner Air & Mould Cooling
  •    Vacuum Loader : For emptying Septic Tanks
  •    Aquaculture : Aeration for fish farm
  •    Electroplating : Aeration of plating tanks

For Rootech Services Mechanical Vacuum Boosters (Roots Pump)

Industrial Processing:

    Filling Automotive Fluid Systems, Impregnating Windings, Drying Textiles, Sterilizers Evacuating Refrigeration Systems, Holding & Chucking, Central Systems for Electronic Assembly, Light Bulbs Manufacture, TV Tubes Manufacture

Chemical & Pharmaceutical:

    Degassers, Vacuum Distillation, Vaporators, Crystallizers, Vacuum Filters, Vacuum Dryers.

Vacuum Furnace Industry:

   Heat Treating, Hardening, Melting, Optica Coating, Metallizing, Degreasers

Food Processing Industry:

    Vacuum Packaging Fresh & Cooked Meats, Freeze Drying, Vegetable Oil Processing, Sugar Refining, Poultry Evisceration, Vacuum Cooling

Semiconductor Industry & Solar Application:

    Crystal GrowingL, PCVDIon, Implantation, Sputtering, Plasma Deposition Si wafer solar cells, Thin Film Solar cells, Si/Ge wafer ingot, Solar Metrology & Inspection

Electrical Industry:

    Transformer Drying & Service, Transformer Oil Purifiers, Vapor Phase Drying

We provide a full repair and reconditioning service for Roots type blowers, including:

The Roots mechanism is a valve less positive displacement device in which a pair of lobed rotors, interlocked and synchronized, rotate in opposite directions moving past each other and the stator wall with small clearance. Gas is trapped in front of each lobe and swept around the stator periphery from inlet to outlet. Very large displacement (above 20000 m3/h) and the mechanism has proven very effective in the pressure region from 10 to 10¯³ mbar, but only when delivering against low pressure differentials. The graph shows how the attainable pressure ratio for this mechanism varies as a function of outlet pressure. In this example a maximum pressure ratio of 25:1 is obtained at an outlet pressure of about 1 mbar. The fall off in pressure ratio either side of the peak can be attributed to conductance effects and to back-leakage of a proportion of the pumped gases. This latter effect increases with increasing outlet pressure. As a displacement machine and not a true compressor, the Roots mechanism is not suited to discharging to near atmospheric pressure ( i.e with significant differential pressure). The low pressure ratio possible results in a large amount of work being done on the pumped gas, which leads to problems of overheating. It is possible to obtain operation at higher pressure by providing a pressure relief valve/hydrokinetic drive/Variable frequency drive such that a maximum pressure differential is not exceeded.