LGLD2-4 Sliding Vane Pumps

As part of the Cavitation Line of sliding vane pumps, these LGLD propane pumps are ideal for propane, LPG, butane and anhydrous ammonia applications including bulk plant service, multiple cylinder filling applications, vaporizers, bobtails and transports. All LGLD propane pump models have an internal relief valve, and a replaceable casing liner and end discs for easy rebuilding of the pumping chamber if ever necessary. In addition, these pumps feature cavitation suppression liners to reduce noise, vibration and wear.

Blackmer® LGLD2 propane pumps are often mounted to the chassis of a bobtail, or to a steel pad that is welded to the tank. The 3- and 4-in rotary vane pump models can be mounted to a transport in a number of different ways, generally near or between the tank landing gear brackets.

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
  • LGLD2 and LGLD3 models have double-ended drive shaft arrangement, popular for bobtail service
  • Blackmer mechanical seal and ball bearing construction provide maximum reliability
  • Symmetrical bearing support assures even loading and wear for long life
  • Capable of being mounted to a truck or chassis of a bobtail, or to a steel pad welded to the tank.
  • Internal 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
  • LPG
  • Butane
  • Anhydrous ammonia
  • Bulk plant service
  • Multiple cylinder filling applications
  • Vaporizers
  • Bobtail trucks
  • Transport trucks

Performance and Specifications

AVAILABLE MODELS
  • LGLD2
  • LGLD3
  • LGLD4
NOMINAL FLOW RATE RANGE
  • LGLD2: 30 - 105 gpm (114 - 397 L/min)
  • LGLD3: 60 - 201 gpm (227 - 761 L/min)
  • LGLD4: 150 - 370 gpm (568 - 1,400 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)
  • LGLD2: 350 - 980
  • LGLD3: 350 - 980
  • LGLD4: 350 - 800
PRIMARY MATERIALS OF CONSTRUCTION
  • Ductile Iron
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)
Model
Length
Weigth
Height
Approx W.

LGLD2

LGLD3

LGLD4

in
mm

in
mm

in
mm

13-4/9
341.3

20-3/8
517.5

16-3/8
415.9

9-11/16
246.1

13-1/4
336.6

16-15/16
430.2

10
254

13-3/8
339.7

15-4/9
392.2

85 lb
38.6 kg

160 lb
72.6 kg

205 lb
93 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 Strength Steel

Cast Iron: ASTM A48

Plated Steel

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