ST Series

Small/medium size mechanical reciprocating compressors suitable for operating with high suction pressures. Suitable for MRUs.

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ST Series compressors are compact mechanical units with 3 to 6 cylinders arranged radially.
They are suitable for:

  • Applications where medium/high suction pressures are required
  • Stations with high hourly dispensing volumes
  • Mobile Refueling Units (MRUs)

With their robust construction, water cooling and no direct lubrication in the cylinders, they ensure high performance, long service life and excellent reliability even under severe operating conditions.

Datasheet &
Performance Graph

Datasheet

Datasheet

Technical Features Unit of measure Values
Templates C60; C50; C30
Cylinders No 3 : 6
Stadiums No 1 : 5
Suction pressure bar (psi) 8 ÷ 220 (120 ÷ 3,200)
Discharge pressure bar (psi) Up to 310 (4,500)
Max flow-rate Scm/hr (SCFM) 1,650 (975)
Power range kW (Hp) 15 ÷ 110 (29,5 ÷ 150)
Speed rpm 700 : 1,500
Maintenance Interval hours 4,000 for plants in CNG; 8,000 for plants in RNG*
Compressed gases NG, RNG
Properties Cylinders Water-cooled, non-lubricated
Lubrication system Oil bath mechanism of the crankcase
Oil Consumption Liters 2 liters per 100 hours of operation
Gas dispersion % 0.1% of rated capacity
Certifications EC/EAC – US

ST Series

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Performance Graph

Case Studies

Company SQM

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References

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The compressors are water-cooled with direct coupling to an electric motor and/or gas engine.