Traditional Moyno progressing cavity pumps are based on a 1:2 ratio pumping element profile characterized by a single threaded rotor turning inside a double threaded stator. Process fluid is conveyed from the suction to the discharge end of the pump via a series of cavities formed as the rotor turns within the stator.

Even though for the past 20 years Moyno multilobe (2:3 ratio) rotors and stators have been used as power sections in hydraulic drilling motors for the oil and gas industry, it was only recently that manufacturing and technological advancements made it practical for Moyno to economically produce multilobe pumping elements for the Moyno® and R&M® L-Frame, 1000 and 2000 pump lines.

Available as either replacement components or new, complete pump units, multilobe elements consist of two leads on the rotor and three leads on the stator. During one full revolution of the rotor, each pump cavity opens and closes twice for a flow rate equal to 150% - 175% of conventional single lobe pumps. Additional end user benefits include greater pressure capabilities, decreased pump speed opportunities and lower operating cost per gallon of fluid pumped.