The G3M, a heavy-duty, medium-sized triplex drive unit, was originally developed to bring re-liquefied boil-off gases from LNG tankers to a high pressure level, rendering these gases usable for the ships’ propulsion system. As a rugged workhorse, it is also ideal for various other applications, including use in the chemical industry or for offshore applications on oil platforms. The Lewa Triplex G3M process diaphragm pump was one of the main exhibits of Lewa GmbH at Achema 2015.
The G3M is an intermediate size product in the Lewa portfolio that attains a maximum output of 200 kW thanks to its stroke length of 120 mm and a rod force of 125 kN. It is intended for use primarily in the oil and gas industry, as well as the chemical process industry. The chief application in the former sector is injecting monoethylene glycol and methanol. In the process industry, a wide variety of pumping tasks in pressure ranges between 40 and 750 bar can be managed. Other possible applications include handling highly flammable materials such as vinyl acetate, slurry in the wet oxidation or high-pressure metering of liquid ammonia.