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Serie STSP

Premium Fixed-Speed Rotary Screw Compressors | 30–425 HP | 100–218 PSI


  • Power range: 30 to 425 HP
  • Operating pressure: 100, 125, and 218 PSI
  • Flow up to 2151 CFM
  • Direct drive
  • High-efficiency IE3 / IE4 motors
  • Microprocessor control panel with LCD display
  • Standard proportional control valve
  • Optimized cooling with radial fan (≥75 kW)
  • Two-stage air/oil separator (2–3 PPM)
  • Lifetime warranty on the airend
  • ISO 1217:2009 Annex C & E compliant
  • Noise level measured under ISO 2151

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Description

1 Airtec Global


Industrial Power with Maximum Reliability


The STSP Series by South-Tek is designed for companies that require consistent compressed air production with pressure stability and high energy efficiency. Its direct-drive system eliminates mechanical losses, optimizes power transmission, and extends equipment service life.

It incorporates high-performance components such as a Termomeccanica airend, IE3/IE4 motors with Class F insulation and IP55 protection rating, a two-stage air/oil separator, and an intelligent cooling system with a thermostatic valve.

Each unit undergoes rigorous testing under demanding conditions to ensure thermal stability, low vibration levels, and reliable 24/7 performance.

Applications


High-demand manufacturing plants.

Metalworking industry.

Automated processes and production lines.

Food and packaging industry.

Industrial pneumatic systems.

Continuous operation in demanding environments.

Advantages


Reduced mechanical losses thanks to direct coupling.

Greater energy efficiency compared to traditional systems.

Pressure stability through proportional control valve.

Low noise level due to sound-attenuated enclosure.

Simplified maintenance with digital monitoring.

Advanced protection against overload and electrical variations.

Optimized energy consumption at partial load.


2 1 Airtec Global

Certified High-Performance Engineering


The STSP Series integrates a single-stage, oil-lubricated airend with an air/oil aftercooler. The separation system reduces oil carryover to levels of 2–3 PPM, ensuring air quality and system protection.

The microprocessor-based control panel allows monitoring of pressure, temperature, operating hours, and preventive maintenance schedules. It can also be integrated into remote monitoring and centralized management systems.

Models rated at 75 kW and above incorporate a radial fan for superior cooling, noise reduction, and improved thermal efficiency. The system includes:

  • Thermostatic mixing valve for oil temperature control
  • Pressure relief valve for operational safety
  • High-efficiency intake filters with clogging sensor
  • Oil filters with bypass system
  • Low-resistance air/oil separators

Performance is certified under ISO 1217:2009 Annex C & E, and sound levels are measured according to ISO 2151.


3 2 Airtec Global

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