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OVERVIEW

Gemini compressors, flexible and reliable for the long haul.

New Gemini separable high-speed gas compressors from Cooper are rated 60 hp to 800 hp (45kW to 597 kW). They provide customers unsurpassed service for applications such as fuel-gas boosting, gas gathering, gas lift, CNG, and pipeline and storage-withdrawal applications. 

What We Offer

3 REASONS TO CHOOSE gemini

  • Cooper offers a full line of Gemini high-speed reciprocating compressors, ranging from 60 to 800 hp (45 kW to 597 kW) with a variety of piston rod load capacities and frame stroke combinations.
  • Over 10,000 Gemini compressors can be found around the globe, working in gas boosting, gathering, lifting, fueling, and injecting applications

  • Global network of distributors.
  • The compressor fits on a single skid, simplifying moves and lowering installation, site construction, and re-application costs.
  • Field-replaceable cylinder liners allow the cylinder bore to be increased or decreased as needed.
  • A variety of capacity control devices are also available to ensure horsepower is not wasted.
  • Modular design of Gemini high-speed reciprocating compressors allows frames and cylinders to be matched and re-arranged with only minor changes to the skid

  • Designed to operate 24 hours a day, seven days a week.
  • Gemini high-speed API 11P reciprocating compressors use a balanced-opposed design to minimize vibration by equalizing the opposing reciprocating forces on the crankshaft.
  • Heavy, ribbed frames distribute reciprocating stresses evenly for greater strength and longer life.
  • Many compressor cylinders are water-jacketed to lower operating temperatures, provide thermal stability, and improve valve life.

Frame Ratings

Frame SeriesM SeriesH SeriesA Series
Frame ModelM301M302H301H302H304A351A352A354
Number of throws12124124
Max power (hp)
(kW)
60
45
120
89
100
75
200
149
400
298
200
149
400
298
800
597
Stroke (in/mm)3 / 763 / 763.5 / 89
Max RPM1,8001,8001,800
Combined rod load (lbf/kN)
Tension6,000 / 2710,000 / 4414,500 / 64
Compression6,000 / 2710,000 / 4412,500 / 56
Total12,000 / 5320,000 / 8927,000 / 120
Main bearing diameter (in/mm)3 / 763 / 763.25 / 83
Piston rod diameter1.125 / 291.125 / 291.375 / 35
Crankshaft materialForged SteelForged SteelForged Steel