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Blackmer HXL8 Sliding Vane Pump_3 Blackmer HXL8 Sliding Vane Pump_1 Blackmer HXL8 Sliding Vane Pump Cutaway 600 Blackmer HXL6 600 Sliding Vane Pump

HXL Sliding Vane Pumps Offers Broad Flexibility Required in Refineries, Terminal Operations, and Barge- or Ship-Loading Applications

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

The HXL pumps are constructed of ductile iron (ASTM 536) that will withstand sudden thermal shock and stress well beyond the capabilities of cast iron. All models are fitted with replaceable casing, liners and end discs that allow easy rebuilding of the pump, without removing the pump from the piping. Models are available in 6-, 8- and 10-in ANSI flanged port sizes with maximum rated capacities of 755, 1,200 and 2,080 gpm (171, 273, 472 m3/h) respectively. Standard elastomers include FKM O-rings. Optional bolt-on relief valves are designed to protect the pump from excessive pressure are available for all sizes.

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 HXL (jacketed or non-jacketed) Sliding Vane Pump (6, 8 & 10-in size). No alignment required with these pre-configured fully Integrated Unit Assemblies as they are ready for immediate drop-in installation.

Features and Benefits

  • Ductile-iron construction with bolt on, internal relief valve
  • Internal mechanical seals have reduced speeds, allowing for extended dry run without failure and continuous operation with non-lubricating liquids
  • Replaceable casing liners and end discs allow easy rebuilding of the pumping chamber to like-new condition without removing the pump from the piping
  • High volumetric efficiency and symmetrical bearing support means less required horsepower than other PD pumps, meaning a cost savings on both motor operation and electricity
  • 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


  • Crude oils & Bunker C
  • HFO-Heavy Fuel Oil
  • Waste oils
  • Fertilizers
  • Greases
  • Lube oils
  • Molasses
  • Asphalt

Performance and Specifications

  • HXL6
  • HXL8
  • HXL10
  • 6": 90 - 750 gpm (341 - 2,839 L/min)
  • 8": 145 - 1,190 gpm (549 - 4,505 L/min)
  • 10": 430 - 2,080 gpm (1,628 - 7,874 L/min)
  • EC Laminate
  • Bronze
  • Iron
  • 0.2 - 22,000 cSt
  • -25°F to 400°F (-32°C to 204°C)
  • Side Inlet / Side Outlet
  • 6": 125 psi (8.6 bar)
  • 8" & 10": 150 psi (10.3 bar)
  • 6" & 8": 45 - 350
  • 10": 45 - 230
  • 6": 150 psi (10.3 bar)
  • 8-10": 250 psi (17.2 bar)
  • Ductile Iron
  • Connections: NPT, ANSI Flange
  • Elastomers: FKM
  • Seal: Blackmer's single mechanical
  • Bypass Valve: internal or external
  • Hydrostatic Test
  • Performance Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)

HXL Nominal Flow Rate Range

HXL Nominal Flow Rate Range


Pump Model L W H Approx. Wt.
HXL6 in 31-2/3 23-3/16 34-1/2 707 lb
mm 804.9 714.7 876.3 320.6 kg
HXL8 in 32-5/8 27-9/16 36-7/8 1010 lb
mm 828.7 700.1 936.6 458 kg
HXL10 in 41-1/16 36-3/8 44-1/3 2610 lb
mm 1043 923.9 1125.5 1184 kg

Materials of Construction

Pressure Parts Materials
Cylinder, Heads, Bypass Valve Ductile Iron: ASTM 536

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 Side Outlet: Outlet 180° inline porting
SEALING OPTIONS Blackmer single mechanical seal

Vane Options

Material Temperature Limits Viscosity
EC Laminate -25°F to 400°F (-32°C to 204°C) 0.2 - 8,500 cSt
Bronze -25°F to 400°F (-32°C to 204°C) 105 - 22,000 cSt
Cast Iron -25°F to 400°F (-32°C to 204°C) 105 - 22,000 cSt

Elastomer Options

Temperature Limits
FKM -15°F to 400°F (-26°C to 204°C)

Maintenance Kits

Model(s) Description Part Number
HXL6G Kit - Maintenance 898912
HXL6G Kit - Rebuild 899012
HXL8G Kit - Maintenance 898913
HXL8G Kit - Rebuild 899013
HXL10E Kit - Maintenance 898915
HXL10E Kit - Rebuild 899015