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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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LGL3021

LGL3021 Sliding Vane Pumps Multi-Purpose LPG & NH3 Pump for Bulk Plants & Terminals

Based on Blackmer® industry-standard LGLD3 transfer pump, the LGL3021, which is part of the Cavitation Line of sliding vane pumps, replaces competitive pumps without changing piping connections or motor drives. The LGL3021 is ideal for filling a bobtail or transport truck – the LGL3021 can do it faster and more efficiently than competitive models. This pump is UL listed for use on propane, butane butane/propane mixes and anhydrous ammonia.

Features and Benefits

  • Pumps are listed by Underwriters Laboratory for both LPG and anhydrous ammonia (NH3) service
  • Cavitation suppression liner design for reducing the noise, vibration, and wear normally caused by entrained vapors
  • Replaceable casing, liners and end discs allow easy rebuilding of the pumping chamber to like-new condition
  • Ductile-iron construction with internal relief valve
  • Durable pumps for fast and quiet operation, providing sustained performance and trouble-free operation
  • Includes double-ended drive shaft arrangement, allowing pump to be easily positioned for clockwise or counter-clockwise shaft rotation
  • Blackmer mechanical seal and ball bearing construction provide maximum reliability
  • Symmetrical bearing support assures even loading and wear for long life
  • 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

Applications

  • Bulk plant service
  • Multiple cylinder filling applications
  • Vaporizers
  • Bobtail trucks
  • Transport trucks
  • Anhydrous ammonia (NH3)
UL-LISTED for use in Propane, Butane, and Anhydrous Ammonia

Performance and Specifications

AVAILABLE MODELS
  • LGL3021
NOMINAL FLOW RATE RANGE
  • 60 - 210 gpm (227 - 795 L/min)
DIFFERENTIAL PRESSURE
  • 150 psi (10.3 bar)
MAXIMUM WORKING PRESSURE (MAWP)
  • 350 psi (24.1 bar)
VISCOSITY
  • 0.2 - 10 cP
TEMPERATURE
  • -25°F to 240°F (-32°C to 115°C)
MIN/MAX SPEED (rpm)
  • 350 - 980
PRIMARY MATERIALS OF CONSTRUCTION
  • Ductile Iron
CONNECTION ORIENTATION
  • Side Inlet | Top Outlet
VANE MATERIALS
  • Duravane
AVAILABLE CERTIFICATES
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)

Dimensions

Pump Model L W H Approx. Wt.
LGL3021A in 19 13-7/16 12-2/3 157 lb
mm 484.1 341.3 322.3 71 kg

Materials of Construction

PRESSURE PARTS Material 
Casing, Heads, Relief Valve Cover Ductile Iron: ASTM 536
Discs, Liner Cast Iron: ASTM A48
Bearing Covers Steel
Bearing Locknut and Lockwasher Steel
Rotor Ductile Iron: ASTM 536
Shaft High Tensile Steel
Relief Valve Cast Iron: ASTM A48
Relief Valve Spring Plated Steel

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 Flange Inlet
Bottom Side Outlet
CONNECTION OPTIONS NPT (threaded)
MOUNTING OPTIONS Pump Only
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 - 10 cP

Elastomer Options

Material Temperature Limits
Buna-N -25°F to 240°F (-31°C to 115°C)