GE M Series Natural Gas Compressor (GEMINI - MPSB, MPDB, MPD, MPC, MPDS, MPSS)
The Gemini M Series compressors are designed to run continuously for extended periods while unattended. This high-speed unit forgives non-reversals through its unique wrist-pin needle bearing design. The extensive double-acting and stepped cylinder line-up gives maximum staging flexibility. A workhorse in field gas applications, the M Series can also provide up to 6000 PSIG for CNG vehicle refueling. The compact packager friendly design features a “ through shaft” fan adapter that allows the cooler to be driven by the pump end of the compressor, shortening overall skid size, and simplifying the piping design.
TYPE: Horizontal balanced opposed, two throws, with double acting and/or stepped cylinder sets to provide up to four stages of compression.
FRAME: Heavy walled, one piece alloy iron casting with reinforcing ribs. Removable alloy iron crosshead guides surrounded by large cooling passages, includes oil level dip stick.
CRANKSHAFT: Forged steel design with integral counterweights. Force lubricated tri-metal sleeve type main bearings.
CYLINDERS: A wide range of air cooled cylinder options are available. Cylinders arrangements include double acting, tandem, and stepped piston designs. Non lube available for special applications
COMPRESSOR VALVES: Steel valve seats and guards. Valve springs, lift, and plates can be tailored meet your performance conditions. PEEK or MT valve plates are standard.
PISTON/PISTON RODS: Hard anodized aluminum alloy or cast iron pistons. Weight controlled at factory so weight matching of parts is not necessary in the field. Carbon filled Teflon piston rings standard. Stainless steel 1.125 diameter tubular piston rods with through bolt construction. Full floating vented rod and wiper packing.
CROSSHEADS: Single piece aluminum crossheads with cast iron insert, and Grade 8622 steel crosshead pins.
CONNECTING RODS: Forged Steel with precision insert type bearings on crank end and roller bearings on pin end.
LUBRICATION/COMPRESSOR: Gear type lube oil pump driven directly by compressor shaft by means of a helical gear. Full flow spin-on lube oil filter, six gallon lube oil sump capacity.
LUBRICATION/PACKING AND CYLINDER: Integral single pump force feed lubricator with block distribution systems, cycle indicator, and Kenco No-flow shut-down switch. Stainless steel tubing with plated fittings piped to the cylinders and packing. Lubrication feed rate is fully adjustable. Pump includes a hand priming pump, and rupture relief valve.
STANDARD TESTING: One hour mechanical run test and post test inspection to GE Gemini standards. Hydrotest of all cylinders to GE Gemini standards.
STANDARD ASSESORIES: Digital parts list (1). Digital maintenance/ operating manuals (2). General arrangement drawings (2). Lifting eyes. Special tools; spanner wrench for piston, rod insert tool.
OPTIONAL ITEMS: Variable volume clearance pockets, CSA or XP “No Flow” and vibration switches, export boxing, immersion oil heaters, flywheels and drive couplings
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