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Blackmer XLW 600 Pump

XLW Sliding Vane Pumps Ductile-Iron Pump Capable of Handling Liquids with Suspended Particles

Blackmer® XLW Ductile Iron Pumps, part of the Heavy Duty Line of sliding vane pumps, are specially designed to handle liquids with suspended abrasive particles and are constructed with hardened and replaceable wear surfaces (liners and end discs) for extended service life. The XLW is capable of handling liquids with suspended particles up to 250 microns and 25% concentration. 

Utilizing unique Blackmer sliding vane designs, these positive displacement rotary pumps offer the best combined characteristics of sustained high level performance, energy efficiency, trouble-free operation and low maintenance cost.

Blackmer fully Integrated Unit Assemblies are the pre-engineered and pre-designed drop-in pumping solution. These unit assemblies, include motor, gearbox, baseplate, coupling safety covers, and a XLW Sliding Vane Pump (2, 3 & 4-inch size). No alignment required with these pre-configured fully Integrated Unit Assemblies as they are ready for immediate drop-in installation.

Features and Benefits

  • Replaceable casing, liners and end discs that allow easy rebuilding of the pumping chamber to like-new condition without removing the pump from the piping
  • Hardened ductile-iron construction with internal relief valve
  • Blackmer mechanical seal and ball bearing construction provide maximum reliability
  • Symmetrical bearing support assures even loading and wear for long life
  • Adjustable relief valve protects pump against excessive pressures
  • External ball bearings are isolated from pumpage by mechanical seals to maximize bearing life and minimize contamination risk
  • 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


  • Oxide primers
  • Vertical and horizontal bead mills
  • Solvent recovery
  • Oil tank bottom recirculation
  • Heath treater supply
  • Enhanced oil recovery
  • Crude or hot oil transfer

Performance and Specifications

  • XLW2
  • XLW3
  • XLW4
  • XLW2: 14 - 40 gpm (53 - 151 L/min)
  • XLW3: 23 - 85 gpm (87 - 322 L/min)
  • XLW4: 104 - 190 gpm (394 - 719 L/min)
  • 150 psi (10.3 bar)
  • 350 psi (24.1 bar)
  • XLW2/XLW3: 1 - 15,750 cP
  • XLW4: 105 - 4,250 cP
  • -25°F to 300°F (-32°C to 149°C)
  • XLW2/XLW3: 56 - 350
  • XLW4: 125 - 350
  • Ductile Iron
  • Side Inlet | Top Outlet
  • EC Laminate
  • EC Hardened
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)


Pump Model L W H Approx. Wt.
XLW2 in 13-4/9 11 10 85 lb
mm 341.3 281 254 38.6 kg
XLW3 in 15-15/16 15-7/8 13-3/8 160 lb
mm 404.8 403.2 339.7 72.6 kg
XLW4 in 16-7/16 16-15/16 15-7/16 205 lb
mm 417.5 430.2 392.2 93 kg

Materials of Construction

Parts Materials
Casing, Heads, Relief, Valve Cover Ductile Iron: ASTM 536
Liner Hardened Ductile Iron

Pump Options

Options Details
ORIENTATION OPTIONS Right Hand: INLET is to the right, when looking from driven side
Left Hand: INLET is to the left, when looking from driven side
PORTING OPTIONS Top Outlet: Outlet 90° offset from inlet
Unit: Pump, Motor, Baseplate, Couplings, Guards
SEALING OPTIONS Blackmer single mechanical seal

Vane Options

Material Temperature Limits Viscosity
EC Laminate -25°F to 300°F (-32°C to 149°C) 105 - 15,750 cP
EC Hardened Iron -25°F to 300°F (-32°C to 149°C) 105 - 15,750cP

Elastomer Options

Material Temperature Limits
FKM -15°F to 300°F (-26°C to 149°C)
PTFE – SS Spring 0°F to 300°F (-18°C to 149°C)

Maintenance Kits

Model(s) Description Part Number
XLW2F Kit - Maintenance 898974
XLW2F Kit - Rebuild 899074
XLW3F Kit - Maintenance 898975
XLW3F Kit - Rebuild 899075
XLW4A Kit - Maintenance 899176
XLW4A Kit - Rebuild 899276