LGL3021 Sliding Vane Pumps

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
Application
  • Bulk plant service
  • Multiple cylinder filling applications
  • Vaporizers
  • Bobtail trucks
  • Transport trucks
  • Anhydrous ammonia (NH3)

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
CONNECTION ORIENTATION
  • Side Inlet | Side Outlet
VANE MATERIALS
  • Duravane
AVAILABLE CERTIFICATES
  • Hydrostatic Test
  • Performance Test
  • NPSH Test
  • Material (actual or typical)
  • Dimensional (pump only or unit)
PRIMARY MATERIALS OF CONSTRUCTION
  • Ductile Iron
Model
Length
Weigth
Height
Approx W.

LGL3021A

in
mm

19
484.1

13-7/16
341.3

12-2/3
12-2/3

157 lb
71 kg

Part

Casing, Heads, Relief Valve Cover

Discs, Liner

Bearing Covers

Bearing Locknut and Lockwasher

Rotor

Shaft

Relief Valve

Relief Valve Spring

Material

Ductile Iron: ASTM 536

Cast Iron: ASTM A48

Steel

Steel

Ductile Iron: ASTM 536

High Tensile Steel

Cast Iron: ASTM A48

Plated Steel

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