MLN Sliding Vane Pumps

Model MLN Sliding Vane Pumps, part of the Heavy Duty Line of sliding vane pumps, are ideal for handling thin to highly viscous fluids such as oils, asphalts, molasses and adhesives. These positive displacement rotary pumps are constructed with ductile iron, and are ideal for handling everything from thin non-lubricating solvents, to highly viscous liquids or abrasive slurries. The MLN features internal self-lubricating carbon sleeve bearings and PTFE-impregnated shaft packing. Options include Blackmer® or commercial single or double mechanical seals.

Features and Benefits
  • Available with internal sleeve bearings with external stuffing box 
  • Modular bearing hub assemblies allow these pumps to be easily reconfigured in the field
  • Optional wear hardened parts available for abrasive applications
  • Jacketed pump head option for high temperature operation
  • Ductile-iron construction with bolt on, internal relief valve
  • Symmetrical bearing support assures even loading and wear for long life
  • Optional commercial mechanical seals
  • External shaft stuffing box accommodates most standard aftermarket mechanical seal configurations
  • Adjustable relief valve protects pump against excessive pressures
  • Advantages of sliding vane technology:
    • Unique sliding-vane pump design self-adjusts for wear to maintain flow rates
    • Excellent self-priming and dry-run capabilities
    • Sliding vane design provides sustained performance and trouble-free operation
    • Easy maintenance: vanes can be easily replaced without removing the pump from the piping system
    • High suction lift and line-stripping capabilities
    • Low maintenance and low life-cycle costs
Application
  • Chemicals
  • Petroleum
  • Paint and coatings
  • Pulp and paper
  • Food processing
  • Oils
  • Asphalts
  • Molasses
  • Adhesives

Performance and Specifications

AVAILABLE MODELS
  • MLX4
NOMINAL FLOW RATE RANGE
  • 35 - 590 gpm (132 - 2,233 L/min))
DIFFERENTIAL PRESSURE
  • 200 psi (13.8 bar)
MAXIMUM WORKING PRESSURE (MAWP)
  • 250 psi (17.2 bar)
VISCOSITY
  • 0.2 - 108,000 cP
TEMPERATURE
  • -25°F to 400°F (-32°C to 204°C)
MIN/MAX SPEED (RPM)
  • 68 - 600
CONNECTION ORIENTATION
  • Side Inlet | Side Outlet
VANE MATERIALS
  • Laminate
  • Bronze
  • Hardened Steel
AVAILABLE CERTIFICATES
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)
PRIMARY MATERIALS OF CONSTRUCTION
  • Ductile Iron
Model
Length
Weigth
Height
Approx W.

MLN

in
mm

22-1/4
565.2

29-3/8
746.2

27-3/8
695.3

385 lb
173 kg

Part

Casing, Heads, Hubs

Liner

Discs

Material

Ductile Iron: ASTM 536

Ductile Iron: ASTM 536

Cast Iron: ASTM A48

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