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Blackmer TXH3 Sliding Vane Pump_4 Blackmer TXH3 Sliding Vane Pump_3 Blackmer TXH3 Sliding Vane Pump_2

TXH Sliding Vane Pumps Cast-Iron Pumps Designed for Easy Connections and High-Speed Drives on Tank Trucks and Transports

Blackmer® TXH3 cast-iron rotary vane pumps, part of the Iron Line of sliding vane pumps, have been designed for use on tank trucks and transports that handle a wide range of clean, non-abrasive and non-corrosive fluids that are compatible with cast iron.

TXH3 pumps are designed with horizontal parallel porting that can offer installers easier piping connections than pumps with 90° ported pumps. TXH3 pumps are also installed using mounting feet rather than brackets. Other features of the TXH3 models are a large diameter shaft with low-friction, grease-lubricated ball bearings for smooth and quiet operation. Cartridge-type mechanical seals provide reliable service while preventing external leakage. The double-ended shaft allows for either clockwise or counter-clockwise rotation. Internal safety relief valves are standard with an optional piston air valve for trucks with automatic pressure-control systems also available.

Features and Benefits

  • External roller ball bearings support the rotor from both sides, creating a stable environment for the internal mechanical seals
  • Dual-ended shaft simplifies installation
  • Blackmer mechanical seal and ball-bearing construction provide maximum reliability
  • Internal mechanical seals allow for extended dry run and continuous operation with non-lubricating liquids
  • Symmetrical bearing support assures even loading and wear for long life
  • Adjustable relief valve protects pump against excessive pressures
  • T-type strainers are available to protect pumping systems from damage caused by welding slag and foreign matter in pumps and tanks
  • 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
  • External ball-bearings are isolated from pumpage by mechanical seals to maximize bearing life and minimize contamination risk
  • Easy maintenance: vanes can be easily replaced -- without removing pump from truck
  • 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
    • High suction lift and line-stripping capabilities
    • Low maintenance and low life-cycle costs


Transport delivery, fleet refueling & bulk transfer:

  • Fuel oil
  • Jet fuel & aviation fuel
  • Gasoline
  • Biodiesel
  • Ethanol & other alcohols
  • Solvents
  • Ester
  • Ketone
  • Naphtha
  • Ether
  • Amine
  • Aromatic
  • Terpene
  • Glycol
  • Additives

Performance and Specifications

Available Models
  • TXH3
Min/Max Speed (rpm)
  • TXH3: 600 - 1,200
  • TXH3: 100 - 240 gpm (378 - 908 L/min)
  • 0.2 - 4,250 cP
  • -25°F to 240°F (-32°C to 115°C)
Maximum Working Pressure (MAWP)
  • 175 psi (12.1 bar)
Connection Orientation
  • Same Side Inlet and Outlet
Vane Materials
  • Duravane
Differential Pressure
  • 125 psi (8.6 bar)
Primary Materials of Construction
  • Cast Iron
Catalog Options
  • Connections: NPT, Weld
  • Elastomers: FKM
  • Valve: Corrosion resistant
  • Inlet Strainer, Hydraulic Motor Adapter
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)

TXH Nominal Flow Rate Range

TXH Nominal Flow Rate Range


Pump Model L W H Approx. Wt.
TXH3 in 18-1/4 12-2/3 9-1/5 99 lb
mm 463.6 322.3 233.4 45kg

Materials of Construction

Cylinder, Heads, Relief Valve Cover Cast Iron: ASTM A48

Pump Options

Options Details 
Orientation Options Double End: drive pump from either side
Porting Options Same Side Inlet and Outlet
Connection Options NPT (threaded), Welded
Mounting Options Pump Only with Hydraulic Motor Adapter and/or Inlet Strainer
Sealing Options Blackmer single mechanical seal

Vane Options:

Material Temperature Limits Viscosity
Duravane   -25°F to 240°F (-32°C to 115°C) 0.2 - 4250 cP

Elastomer Options:

Material Temperature Limits
FKM -15°F to 240°F (-26°C to 115°C)



Piston Air Valve Style AVC, and Discontinued Style AVB (201-g00)

Parts List

Piston Air Valve Style AVC, and Discontinued Style AVB (201-g00)


TX1.5, TXD2, TXDI2, TXD2.5, TXDI2.5, TXD3, TXDI3, TX4, TXI4, TXD1220, TXD1225, TXD1230, TXH3C
TX1.5, TXD2, TXDI2, TXD2.5, TXDI2.5, TXD3, TXDI3, TX4, TXI4, TXD1220, TXD1225, TXD1230, TXH3C