Oil-free piston air compressors for blow molding rPET and PLA bottles - header

Oil-free piston air compressors for blow molding rPET and PLA bottles

Contact Us - Americas

Contact Us


VITO Next: green light to sustainability - lateral

PollPosition VITO NEXT - Energy Saving - lateral

PollPosition VITO NEXT - Energy Saving





SIAD Americas

To view the services offered by the Global Service Division for API 618 compressors, click here.

Oil-free piston air compressors for blow molding rPET, PET and PLA bottles - main

VITO NEXT: the “smart” compressor for blow molding rPET and PLA bottles

SIAD has been active since 1980 in providing oil-free air compressors to PET blow molding customers globally. In 2014, the company introduced the "VITO" (Value, Innovation, Technology and Optimization) series of compressors, specifically designed for the requirements of the rPET and PLA market.  With the launch of the VITO Series established the benchmark for meeting this critical customer segment for oil-free air compression for the PET blow molding industry. SIAD’s designed the VITO series of compressors based on the experience gained in supplying and installing more than 6000 mission critical reciprocating compressors around the world.

SIAD continued the evolution of the VITO range by upgrading its customer offering with an even more premium solution in VITO Next. This upgrade was based on extensive customer feedback which indicated a compressor that could deliver an even higher level of performance and reliability for high and medium pressure oil-free air compression. VITO Next was developed to not only meet these enhanced performance and reliability requirements, but also designed to be efficient, sustainable and continuous “connected” via SIADMI4U hardware for remote monitoring.

The best Total Cost of Ownership available on the market

air separation plant

To cover all customer requirements, the VITO range is complemented by the Tempo2 series and by the Screw + Booster piston compressor line known as the BS series.


Range of oil-free* air compressors for blow molding PET, rPet and PLA bottles

 Technical data High Pressure 
(Metric Units)
 Low Pressure
(Metric Units)
 High Pressure
(Imperial Units)
Low Pressure
(Imperial Units)
Compression stages  3  2 3 2
Maximum suction volume**  6 000 m3/h  2 100 m3/h 210,000 scfh 73,800 scfh
Maximum power  900 kW  220 kW 1,220 HP 230 HP
Maximum delivery pressure  42 bar (a)  16 bar (a)  609 psi 232 psi
Cylinder configuration Vertical, V, W, Horizontal Vertical Vertical, V, W, Horizontal Vertical

* Completely oil-free (“class 0” ISO 8573) dry air supply

The complete supply of our compression line includes air treatment skid, compressor skid, control panel, cooling system and outlet filtering unit. It is also possible to order specific components from this list.

All the compression lines are in compliance to ASME code and supplied with UL certification and 60 Hz.

The VITO Next compressor also perfectly matches all heavy-duty air and nitrogen applications (HDIAN), where the use of high and medium pressure air and nitrogen is required.

hydrogen compressor

Download Brochure

The technical details that make the difference

VITO NEXT: the smart compressor for blow molding PET, rPET and PLA bottles


  • Connectivity
    Designed for the connection to remote monitoring systems

  • Increased Robustness
    Improved piping fixing
    Improved transmission unit protection

  • Reduction Of Energy Consumption
    Cylinder fluid-dynamics optimization
    Increase in heat exchange efficiency

  • Greater Efficiency
    Improved condensate separation efficiency
    Optimized cooling water distribution

  • Extended Lifetime
    Increased protection of cylinders against corrosion
    Optimal balance of the moving masses

  • New Options
    Filter-silencer unit for restricted noise limit environments
    No-vibrations skid for elevated floor installations

Additional energy savings options which make the compression line eco-sustainable and with reduced environmental impact:

  • VSD (Variable Speed Drive)

With an inverter drive, which regulates the frequency of the electric power supply, the compressor motor operates at variable speeds.

  • 0-50-100%: Step regulation of the flow rate

If the request for compressed air decreases, the 0-50-100% device works by excluding the upper effect of the first stage cylinder, by means of pneumatic valve unloaders, and therefore obtains a flow rate equal to 50% of the nominal value.

  • Energy Saving Pack

It is essential to know in detail the actual use of the compressors in order to study and define the most efficient working method for the system. For this purpose, SIAD offers the "Energy Saving Pack" which involves an analysis of the operation of the air compressors at the customers' premises, with a detailed analysis of the energy consumption: this is then followed by a specific proposal for the installation of a control panel, or of a control panel plus a VSD. The main control panel manages up to 8 compressors simultaneously. The panel constantly calculates the total compressed air flow rate and the consumption of the electricity and therefore enables it in real time to adapt the compressors’ performance to the required changes.

Advantages:air separation unit

  • Energy saving and flexibility with respect to different volumes of bottles in production
  • Increased air flow rate with the same energy consumption
  • Easy system management
  • Greater reliability– less wear thanks to less "idle" operation
  • Less maintenance - reduction of production costs
  • Guaranteed optimum use of all the compressors installed
  • VSD investment with quick pay-back time


  • Compressed air recovery

This system allows the recovery of compressed air from the blow molder, with a consequent reduction in energy consumption for compression. For its customers, SIAD handles both the feasibility analysis and the implementation of this solution, which can be easily applied to compressors already installed.

  • Heat recovery

The thermal energy produced by a SIAD compressor can be recovered for different purposes at the customer's plant
(e.g.: heating and auxiliary systems). In this situation too, SIAD handles both the feasibility analysis and the implementation of this solution for its customers. Depending on the model, the solution allows a recovery of between 30% and 80% of the thermal power of the compressor, plus providing a supply of water at temperatures of up to 90°C.

SIAD I has been operating in the food and beverage industry for many years and is fully conversant with all regulatory requirements for preventing contamination from oils and toxic substances. It has thus succeeded in developing compressors with standard features capable of supplying oil-free high and medium pressure air for the blow molding of PET, rPET and PLA bottles and containers, which are also used in the following sectors: Cosmetic, Chemical and Pharmaceutical.

carbon capturing plant