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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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LB081 Assembly LB161B HD942 LB361_cutaway

LB Series Reciprocating Gas Compressors LB080, LB160, LB360, LB600, LB940

Blackmer oil-free gas compressors deliver high efficiency in handling propane, butane, and anhydrous ammonia. The LB Series Reciprocating Gas Compressors are ideal for rail car unloading and tank unloading in addition to associated vapor recovery applications. The single-stage, reciprocating compressors are designed to give maximum performance and reliability under the most severe service conditions. All pressure parts are of ductile iron construction for greater resistance to both thermal and mechanical shock. They are designed for ease of maintenance, with all components readily accessible.

Models are available with liquid transfer delivery rates up 680 gpm (2,575 L/min) and piston displacement capacities up to  125 cfm (212 m³/h) with working pressure up to 350 psi (24.13 bar).

Performance and Specifications

English Units LB081
LB082
LB161
LB162
LB361
LB362
LB601
LB602
LB942
LB943
No. of Cylinders 1 2 2 2 2 Double Acting
Bore x Stroke, in. 3.0 x 2.5 3.0 x 2.5 4.0 x 3.0 4.625 x 4.0 4.625 x 4.0
MAWP, psia 350 350 350 350 350
Speed, rpm 350 - 825 350 - 825 350 - 825 350 - 825 350 - 825
Piston Displacement, CFM
@ 350 rpm 3.58 7.16 15.3 27.2 52.46
@ 825 rpm 8.45 16.9 36 64.2 125.2
Max. BHP 5 7.5 15 30 50
Weight, lb. ~180 ~225 ~365 ~705 ~905
Inlet/Outlet Connections 0.75" NPT 0.75" NPT 1.25" NPT *2.00", 1.50", 1.25" 2" 300# ANSI

*NPT & Weld type flanges available

Metric Units LB081
LB082
LB161
LB361
LB601
LB942
LB943
No. of Cylinders 1 2 2 2 2 Double Acting
Bore x Stroke, mm 76.2 x 63.5 76.2 x 63.5 102 x 76 117 x 102 117 x 102
MAWP, kPa 2,413 2,413 2,413 2,413 2,413
Speed, rpm 350 - 825 350 - 825 350 - 825 350 - 825 350 - 825
Piston Displacement, m³/hr
@ 350 rpm 6.1 12.2 26 46.3 89.1
@ 825 rpm 14.35 28.7 61.2 109 212
Max. kw 3.7 5.5 11 22 37
Weight, kg ~82 ~102 ~166 ~320 ~410
Inlet/Outlet Connections 0.75" NPT 0.75" NPT 1.25" NPT *2.00", 1.50", 1.25" 2" 300# ANSI

*NPT & Weld type flanges available

Features and Benefits

  • High efficiency valves move more gas volume
  • O-ring seals for head and cylinder to ensure positive sealing
  • Ductile iron construction for greater resistance to both thermal and mechanical shock
  • Wear-resistant crosshead assemblies
  • Heavy-duty crankshafts
  • Pressure assisted piston rings for positive seating
  • Self-adjusting piston rod seals
  • Double and triple piston rod seals with distance piece chambers available

Applications

  • Liquid transfer
  • Vapor recovery
  • Liquefied gas compression
Visit the Compressor Solutions page for more information about the LB Series Reciprocating Gas Compressors. 

Options

Options Available Literature  Details
Crankcase Oil Heater CB322 Used to maintain adequate oil temperature in cold to severe climates 
Distance Piece Options CB037 Section of gas compressor between crankcase and compressor cylinder that isolates the two areas, providing oil-free operation for cylinder 
Pressure Gauges CB105 Various pressure gauges available
Extended Crankshaft   Extended crankshaft available for direct drive mounting
Oversized Flywheels   Available for various drive options

Ancillary Equipment

Equipment Available Literature  Details
4-Way Valves CB046 For piping, in aiding for easy transition from liquid transfer to vapor recovery - comes with handle and flow indicator
Electrical Schematic CB276  Overview of a generalized wiring schematic for typical installations
Float Switch Information CB145 Activates alarms and/or shut-down equipment when a liquid rises or falls past the switch
Liquid Traps CB212 Trap installed in the suction line to stop liquid from entering the compressor
Liquid Traps, ASME Code CB218  ASME coded trap installed in the suction line to stop liquid from entering the compressor
Low Oil Pressure Switches  CB020  Sends signal when the compressor's crankcase oil pressure falls 
Mounting Arrangements  CB111  A variety of mounting arrangements available for compressors 
Strainer CB172  Features a 30-mesh stainless steel screen 
Belt Guards 
Available in either aluminum or stainless steel 
Pressure Switches    Activates alarms and/or shutdown equipment for suction, discharge, differential, and/or oil pressure 
Temperature Switches    Activates alarms and/or shutdown equipment for discharge and/or oil temperature 
Temperature Gauges    Visual confirmation of temperature - typically on the suction and discharge process gas location 
Thermowells    Protects temperature monitoring devices from harsh process gas conditions 
Control Panels and Starters    Junction box and full turn-key functionality available in required classifications 
NPT or Welded Piping Systems    Threaded or welded steel piping systems 
Pressure Gauges  CB105  Visual confirmation of pressure - typically on the suction, discharge, and oil locations 
Receivers    Often times used as a holding vessel for pressure control on the suction or discharge 
Relief Valves    Overpressure safety devices required on the compressor discharge and any associated ASME code vessels 
Shutoff Valves    Available in either manual or powered 
Aftercoolers    Available in either air or water cooled 
Motor or engine drives    Available in various classifications and fuel types 
Repair tool kits  CB110  List of part numbers for special tools and tool kits used on compressors
Unloader Solenoid Valve CB315 3-way solenoid for suction valve unloader control available on LB942/943 models

Videos

View the Blackmer Compressor maintenance videos here.

Installation Operation Manuals (IOMs)

LB161B, LB361B, LB601B, LB162B, LB362C, LB602C

Spec Sheets

Materials of Construction

LB160 Series, LB360 Series, LB600 Series, LB940 Series

Dimensions

LB160 Series, LB360 Series, LB600 Series, LB940 Series