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Blackmer® is the leading global provider of innovative, high-quality sliding vane, centrifugal, screw and regenerative turbine pump, and reciprocating gas compressor technologies for the safe transfer of liquids and gases.

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Sliding Vane Pumps

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Blackmer Markets

Providing Innovative Product-Transfer Solutions for a Variety of Markets and Applications

Blackmer provides innovative product transfer solutions for many markets and applications, including in the chemical process, energy, transport, military & marine; general industrial, and oil & gas industries.

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General Industrial

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Blackmer TXD2.5 Sliding Vane Pump_01 Blackmer TXD1200 600 Sliding Vane Pump Blackmer TXD2.5 Sliding Vane Pump_3 Blackmer TXD2.5 Sliding Vane Pump_2 Blackmer TX TXD Series 600 Sliding Vane Pump

TXD Sliding Vane Pumps Pumps Utilized for Fast and Quiet Operation, Compatible with All Biodiesel and Ethanol Blends

Part of the Iron Line, Blackmer® TX/TXD/TXDI Series Sliding Vane Pumps are durable pumps utilized for fast and quiet operation. The sliding vane design provides sustained performance and trouble-free operation. These pumps are equipped with FKM O-rings and Blackmer mechanical seals that are compatible with all biodiesel and ethanol blends. TX/TXD/TXDI options include corrosion resistant relief valve, pneumatic relief valves and Buna or PTFE elastomers and seals.

Features and Benefits

  • Double-ended drive shaft for either clockwise (RH) or counterclockwise (LH) rotation
  • External roller ball bearings support the rotor from both sides, creating a stable environment for the internal mechanical seals
  • Dual-ended shaft on 2-, 2.5- and 3-in models 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
  • Ethanol & other alcohols
  • Lube oil
  • Solvents
  • Ester
  • Ketone
  • Naphtha
  • Ether
  • Amine
  • Aromatic
  • Terpene
  • Glycol
  • Additives

Performance and Specifications

  • TX1.5
  • TXD(I)2
  • TXD(I)2.5
  • TXD(I)3
  • TX(I)4
  • TX1.5: 56 gpm (212 L/min)
  • TXD(I)2: 87 gpm (329 L/min)
  • TXD(I)2.5: 157 gpm (594 L/min)
  • TXD(I)3: 270 gpm (1,022 L/min)
  • TX(I)4: 505 gpm (1,911 L/min)
  • 125 psi (8.6 bar)
  • 175 psi (15.5 bar)
  • 1.0 - 4250 cP
  • -25°F to 240°F (-32°C to 115°C)
  • TX1.5: 200 - 800
  • TXD(I)2 & TXD(I)2.5: 70 - 780
  • TXD(I)3: 70 - 640
  • TX(I)4: 70 - 520
  • TX & TXD: Cast Iron
  • TXI & TXDI: Ductile Iron
  • TX & TXD: Side Inlet | Top Outlet
  • TXI & TXDI: Side Inlet | Side Outlet
  • Duravane
  • Bronze
  • Connections: NPT, Weld, Victaulic
  • Elastomers: BUNA, FKM, PTFE
  • Valve: Corrosion resistant
  • Bypass: 1-stage or pneumatic 2-stage
  • Inlet Strainer, Hydraulic Motor Adapter
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)


Pump Model   L W H Approx. Wt.
TX1.5 in 12-7/8 10-4/7 8-1/2 61 lb
mm 327 287.3 215.9 27 kg
TX(D)2A, TXDI2 in 16-3/4 10 8-11/16 70 lb
mm 425.5 254 220.6 32 kg
TX(D)2.5A, TXDI2.5 in 18-1/4 10-3/4 9-5/8 94 lb
mm 463.6 273.1 244.5 43 kg
TX(D)3E, TXDI3 in 20 1/3 13 1/2 12 4/5 152 lb
mm 515.9 342.9 325.4 69 kg
TX4A, TXI4 in 19-1/4 16-1/2 15-1/2 295 lb
mm 489 419.1 393.7 134 kg

Materials of Construction

PRESSURE PARTS Pump Model Material
Cylinder TX1.5–3 Cast Iron: ASTM A48
TX4 & TXDI2-4 Ductile Iron: ASTM 536
Heads TX1.5–3 Cast Iron: ASTM A48
TX4 & TXDI2-4 Ductile Iron: ASTM 536
Relief Valve Cover
Cast Iron: ASTM A48
TX4 & TXDI2-4 Ductile Iron: ASTM 536


Pump Options

ORIENTATION OPTIONS Double End: drive pump from either side
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 TX/TXD: Top Outlet: Outlet 90° offset from inlet
TXI/TXDI: Side Outlet: Outlet 180° offset from inlet             
Welded, Victaulic
with Hydraulic Motor Adapter and/or Inlet Strainer
SEALING OPTIONS Blackmer single mechanical seal

Vane Options

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

Elastomer Options

Materials Temperature Limits
FKM -15°F to 240°F (-26°C to 115°C)
Buna-N -25°F to 240°F (-32°C to 115°C)
PTFE - SS Spring 0°F to 240°F (-18°C to 115°C)

Maintenance Kits

Model(s) Description Part Number
TX1.5 Kit - Maintenance, Buna-N 898949
TX1.5 Kit - Maintenance, FKM 899179
TXD2A, TX2A, TXD2A-AVA Kit - Maintenance, Buna-N 898950
TXD2A Kit - Maintenance 898956
TXD2.5A, TX2.5A, TXD2.5A-AVA Kit - Maintenance, Buna-N 898951
TXD2.5A Kit - Maintenance 898957
TXD3E, TX3E Kit - Maintenance, Buna-N 898952
TXD3E Kit - Maintenance 898958
TX4A Kit - Maintenance, Buna-N 898953
TX4A Kit - Maintenance 898959


Installation Operation Manuals (IOMs)

TX, TXD - 1.5, 2A, 2.5A, 3E, 4A TXDI - 2A, 2.5A, 3A & TXI4A
TX, TXD – 1.5, 2A, 2.5A, 3E, 4A TXDI - 2A, 2.5A, 3A, TXI4A
Piston Air Valve Style AVC, and Discontinued Style AVB


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