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Balance Mechanism - LBM800 Series


A new benchmark has been set for all bottom loading arms with the introduction of the LBM800. This state of the art design is essential when you require safety and long service life with minimal maintenance.

The ‘bulletproof’ LBM800 provides effortless bottom loading in petrochemical distribution depots through the use of the unique design known as the ‘Velvet Touch’.

The ability of 360° rotation in the horizontal plane allows the LBM800 to easily move from a parked to loading position, to service vehicles on either side of the loading bay. While the vertical plane swivel allows users to position the coupler at different heights within the API envelope.

Features & Benefits
  • Superior safety through Liquip’s unique gas strut design.
  • Exceptional durability and minimal servicing requirements thanks to the best in class base swivel assembly and overall design.
  • Any unit can be easily configured for left hand, right hand, upward and downward configurations on site.
  • Slimline drop leg bracket provides easy installation and compact overall size.
  • Enhanced strength and ease of adjustment through a heavy duty adjustment mechanism.
  • Downtime during installation is reduced by an all-flanged design.
  • Outlet spool provides an industry standard 100mm (4”) TTMA connection for simple installation.
  • Adjustable up/down stop that can be set with minimal effort.
  • Viton GFLT product seals fitted as standard. Other seals available on request.
  • Velvet touch provides smooth operation over the entire stroke of the loading arm.
  • Complies with API RP 1004 for API loading arm envelope.
  • Complies with API RP 2003 for bond resistance requirements for static dissipation.

Recommended products for replacement

    Technical Information

    Working Pressure
    1,000 kPa (145 PSI).

    Test Pressure
    1,500 kPa (217 PSI).

    Investment cast 4130 steel construction.

    LBM800: Fitted with Viton GFLT product seals & HAN dust seal. (Other special seals available on request).

    LBM800C: Fitted with FFKM product seals & HAN dust seal.

    LBM800AVI: Fitted with Viton GFLT product seals & HAN dust seal with grease suitable for use with aviation fuel.

    -Base flange is 4” ANSI 150 raised face flange.
    -Outlet flange is 100mm (4”) TTMA pattern.


    Operating Temperature
    Viton GFLT (Standard): -40°C to +90°C (-40°F to + 200°F).

    Min Moment
    90 kg.m (650 ft.lb).

    Max Moment
    250 kg.m (1,800 ft.lb).

    Brass Retainer Plug Thread
    ¼” UNF

    Up / Down Angluar Movement
    -15° to +15° (From horizontal).

    Typical Horizontal Spacing
    650mm (24”).

    Typical Vertical Spacing
    450mm (18”).

    Typical Radius of arm
    1300mm to 2000mm (50” to 80”).

    Typical No. of arms per bay

    Ordering Information

    LBM800: Standard Balance Mechanism.

    LBM800AVI: Aviation Balance Mechanism.

    LBM800-LR: LBM800 Long Reach (Top Load Balance Assembly).

    LBM800-PA: LBM800 Pantograph (Bottom Load Balance Assembly).

    LBM800-AF: LBM800 A-Frame (Bottom Load Balance Assembly).

    LBM800-1Z: LBM800 with 2 x 2800N Struts.

    LBM800-2Z: LBM800 with 2 x 5200N Struts.

    LBM800-3Z: LBM800 with 2800N & 5200N Strut.

    Associated Equipment

    4416: Standard Bottom loading arm gas strut 2,800N, 500mm (black boot).

    3008: Standard Bottom loading arm gas strut 5,200N, 500mm (green boot).

    VNI-A4VG: 4” Intermediate Swivel, Viton GFLT for Loading Arms.

    VNC-A4VG: 4” Coupler Swivel, Viton GFLT for Loading Arms.

    LYNX Series Coupler.

    4235: Klinger gasket ANSI for LBM800.

    4892: LBM800 stud (8 required).

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    Image Item Description
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    LBM800 Standard Balance Mechanism.
    LBM800-1Z LBM800 with 2 x 2800N Struts.
    LBM800-2Z LBM800 with 2 x 5200N Struts.
    LBM800-3Z LBM800 with 2800N & 5200N Strut.
    LBM800-AF LBM800 A-Frame (Bottom Load Balance Assembly).
    LBM800-LR LBM800 Long Reach (Top Load Balance Assembly).
    LBM800-PA LBM800 Pantogrpah (Bottom Load Balance Assembly).
    LBM800AVI Aviation Balance Mechanism.
    LBM800C Chemical Balance Mechanism.

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