Progressive Cavity Pump, Complete 3L8 CDQ, Moyno ™


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3L8CDQ Moyno® Progressive Cavity Pump, Complete The Moyno® pump is one of the most versatile pumps available. The pump is a single-screw rotary pump.  The pumping action is created by the single helical rotor rolling eccentrically in the double threaded helix of the stator.  In its revolution, the rotor forms in conjunction with the stator a series of sealed cavities 180° apart.  As the rotor turns, the cavities progress from the suction to the discharge.  As one cavity diminishes, the opposing cavity is increasing at exactly the same rate.  Thus, the sum of the two discharges is a constant volume.  The result is a pulsation-less positive displacement flow with no valves. 3 stages of size 8 pumping elements. Standard relationship between housing, bearings, drive shaft and the size of the pumping elements. C – Cast Iron Suction Housing D – Hardened Steel Internals including drive shaft, pins, connecting rod, rotor and othe minor metallic parts in contact with the material being pumped. Q – Nitrile Synthetic Rubber Stator (70 durometer) Features:

  • Low total cost of ownership
  • Simple pin-type universal joint drive assemply for easy maintenance
  • Application versatility, modular design, wide selection of materials of contruction
  • Steady flow under wide NPSH variations
  • Variety of Ultra-Shield® rotor coatings
  • Ultra-Flex® stator elastomers

Performance Features:

  • Non-pulsating
  • Low shear, accurate, repeatable flow
  • Viscosities to 1,000,000 cps
  • Handles solids to 1″ in diameter
  • Pressures to 2,100 psi; capacities from .02 to 450 gpm

Typical applications include; high-pressure water, pastes & gels, food, wastes and by-products, chemical feed and sampling, coolants and lubricants.


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