PRODUCTS

Bottom Loading Arms

OPW Bottom Loading Arm Systems are ideal for loading and unloading petroleum products, chemicals and liquefied gases, and offer numerous benefits over conventional top-loading systems:

  • Improved safety since operator remains on the ground during loading/unloading
  • Quicker connections reduce overall loading/unloading time
  • Bottom loading systems create less turbulence in the tank, reducing the danger of generating static electricity.
  • Bottom loading reduces vapors and the system can be adapted to also recover displaced vapors
  • Tanks can be filled faster and several compartments can be loaded simultaneously
  • Bottom-loading islands are simpler and cheaper to build than top-loading racks

Unsupported Boom Bottom Loader


Designed to provide flexible long-range operation, the heavy-duty unsupported boom type bottom loader configuration is both reliable and easy to use. A minimum of five swivel planes of rotation offer complete flexibility in making tight connections for loading and unloading rail cars and tank trucks. The outboard swivel and arm adjust for any changes in elevation or tilting that may result as the vehicle is loaded or unloaded. The unsupported boom type loader is extremely versatile and many variations are possible. It can be equipped with dry disconnect coupler, union, quick coupling, or other customer specified end fitting to make connections on the side, at the rear, or underneath the vehicle. The intermediate swivel is often 2” – 6” sizes available inverted to achieve the low profile and clearances needed to connect to the underside of a rail car.

Typically installed at or near ground level, arms of varying lengths can be mounted on staggered risers to achieve crossover and neat compact storage of multiple arms in a confined space.

  • 2” – 6” sizes available
  • Carbon Steel, Stainless Steel and Aluminum options
  • Ideal for Railcar Unloading applications
  • Fully customizable

Features/Benefits

  • Easy to operate/maneuver
  • Eliminates cumbersome hose
  • Low Profile with long reach, ideal for railcar unloading
  • Accommodates changes in elevation
  • Can be safely stored to provide for safe clearance of vehicles
  • Easy to connect under the vehicle
  • Very flexible to compensate for vehicle misplacement
  • Scissor-back storage means no wasted space
  • Compact storage, can be stored in ‘jack-knife’ position

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

  • 3” Bottom loading Arm
    Ductile Iron/Carbon Steel/ Aluminum Construction
    42” x 66”
  • Same as above in 4”

A Frame Loader


The “A” Frame Loader is a popular loading-arm configurations due to its flexibility, long reach and convenience of use. Commonly used for tank-truck bottom loading, “A” Frame arms can also be used in top-loading/unloading installations. Inlet flange and seamless piping are suitable for handling liquefied petroleum gases, including propane and butane.

  • 2”–4” sizes available
  • Carbon-Steel, Stainless-Steel and Aluminum options
  • Adjusts for elevation/tilting during loading/unloading
  • Stores in upright, near-vertical position
  • Compact storage envelope allows closer installation proximity
  • Low riser mounting heights
  • Equipped with dry-disconnect coupling, union or other tight-fill inlet
  • Choice of flanged, threaded or all-welded construction
  • LPG service arms (LPG-32-F) feature all-welded construction
  • Fully customizable

Features/Benefits

  • Easy to operate/maneuver
  • Eliminates cumbersome hose
  • Easily stored away from vehicles
  • For multiple product applications, it can be mounted close to another arm
  • Can be safely stored to provide for safe clearance of vehicles
  • Crossover can easily be achieved

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

  • 3” Bottom Loading Arm
    Ductile Iron/Carbon Steel/ Aluminum Construction
    96” Reach
    Same as above in 4”

“A” Frame Hose Loader AFH-32-F


OPW A-Frame Hose (AFH) Loading Arms offer the same advantages as conventional A-Frame Loaders, except flexible hose is used instead of rigid piping on secondary/outboard arm. The A-Frame’s compact storage envelope allows loaders to be installed relatively close together, often on risers that are approximately the same height as the truck connection.

AFH loaders are typically stored in an upright, near vertical position, making it possible to load from both sides of a loading bay. In addition to bottom-loading petroleum, the AFH is also a common choice for use as a vapor recovery arm.

Features/Benefits

  • 790 EZ Adjust Torsion Spring (3-Year Warranty)
  • Integral Upward, Downward Travel Stops
  • Carbon Steel/Aluminum Construction
  • Low-Temperature Fluorocarbon Seals
  • Braided Stainless Steel or Rackmaster Composite Hose
  • Available in Left-Hand, Right-Hand, Upfeed, Downfeed Configurations
  • 360° Rotation Allows Loading on Both Sides of Loading Bay
  • Low Riser Mounting Height (typically same as truck connection)
  • Compact Storage Envelope (nearly vertical)
  • Easily Configured as Vapor Recovery Loader
  • Can be Configured with Additional Swivel Plane for Added Flexibility

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

CWH Series Counterweighted Hose Loader


Installation and operation are simple and efficient with OPW Engineered Systems’ hose loaders. Adjustable counterweights mounted on a pair of horizontal rails are simply moved until the desired balance point is located. This design provides for efficient handling and coupling to the tank adaptors.

This popular hose loader features a flange-by-flange base swivel joint for reliable performance and ease of maintenance. A heavy-duty Dual Split Flange (DSF) base swivel joint is standard on 4″ arms. Construction is carbon steel with a drop hose for maximum flexibility and easy handling. Coupler swivel joint, spacer spool and API coupler are aluminum on the standard model.

Features/Benefits

  • Simple, rugged construction
  • 4 arms with 114″ (2896mm) reach
  • Counterbalance adjustment is smooth and easy
  • Multiple-compartment loading capability save time
  • Dual Split Flange (DSF) inlet swivel for durability
  • Carbon Steel/Aluminum construction
  • Low-Temperature Fluorocarbon Seals
  • Braided Stainless Steel or Rackmaster Composite Hose
  • Easily meets API envelope requirements
  • Crossover capability to meet API envelope
  • Long reach capability
  • Easy maintenance

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

Specifications

MaterialsCarbon Steel / Aluminum
SealsLow Temp Fluorocarbon
Working Pressure 125 PSI (862 kPa)
Test Pressure188 PSI (1296 kPa)
Operating Temp-20F to 140F
Up/Down Angular Movement+15° to -15° (from horizontal)
Typical Horizontal Spacing18" (457 mm)
Typical Vertical Spacing16" (406 mm)
Typical Reach (radius)66" to 102" (1676 mm to 2591 mm)
Typical No. of arms per bayup to 5

CWH Series Counterweighted Hose Loader


Installation and operation are simple and efficient with OPW Engineered Systems’ hose loaders. Adjustable counterweights mounted on a pair of horizontal rails are simply moved until the desired balance point is located. This design provides for efficient handling and coupling to the tank adaptors.

This popular hose loader features a flange-by-flange base swivel joint for reliable performance and ease of maintenance. A heavy-duty Dual Split Flange (DSF) base swivel joint is standard on 4″ arms. Construction is carbon steel with a drop hose for maximum flexibility and easy handling. Coupler swivel joint, spacer spool and API coupler are aluminum on the standard model.

Features/Benefits

  • Simple, rugged construction
  • 4 arms with 114″ (2896mm) reach
  • Counterbalance adjustment is smooth and easy
  • Multiple-compartment loading capability save time
  • Dual Split Flange (DSF) inlet swivel for durability
  • Carbon Steel/Aluminum construction
  • Low-Temperature Fluorocarbon Seals
  • Braided Stainless Steel or Rackmaster Composite Hose
  • Easily meets API envelope requirements
  • Crossover capability to meet API envelope
  • Long reach capability
  • Easy maintenance

All OPW Loading Arms can be customized to fit your specific application requirements.  We do offer a series of  Standard/ optimized solutions that are commonly specified.  These optimized selections can be expedited to meet faster delivery requirements.

Short Range Hose Loader


The slide sleeve type loading arm incorporates a slide-sleeve assembly that telescopes in and out to adjust for variations in the distance from the loading rack to the tank truck. It is used primarily in small bulk plants and terminals for top loading fuel oil or other petroleum products. This cost-effective loading arm is time-tested as a practical method of locating the drop tube accurately and easily.

The slide sleeve is a medium-duty unit designed for flow rates up to 15 ft/sec (4.5m/sec.). Higher flow rates may tend to push the inner tube out beyond the loading point.

Features/Benefits

  • 790 EZ Adjust Torsion Spring (3-Year Warranty)
  • Integral Upward, Downward Travel Stops
  • Carbon Steel/Aluminum Construction
  • Low-Temperature Fluorocarbon Seals
  • Braided Stainless Steel or Rackmaster Composite Hose
  • Available in Upfeed and Downfeed Configurations with Left-Hand and Right-Hand Orientations
  • 360º Rotation Allows Loading on Both Sides of Loading Bay
  • Safe, Easy Spring Adjustment
  • No Special Tools Required
  • Conforms to API Bottom Loading Envelope with (3) arms on 21″ (533 mm) centers
  • Ideal for Converting Top-Loading Rack to Bottom Loading

Library

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

Long Range Hose Loader


OPW spring balanced hose loaders are available in both short-range (SRH-32) and long-range (LRH-32) versions. Like counterweighted hose loaders, spring balanced hose loaders are generally stored at horizontal and only slightly upward or downward movement is required to align the coupler with the tank truck adaptor.
The Long Range Hose Loader, in the 4″ size, is used in exactly the same manner as the counterweighted hose loader. The major difference being the counterbalance mechanism is a torsion spring rather than weights.

  • Available in 4″
  • Available in carbon steel, stainless steel and aluminum
  • Choice of flanged, threaded or all-welded construction

Features/Benefits

  • Ideal for converting Top Loading installations to Bottom Loading
  • Easily adjustable torsion spring
  • Easy to handle and move
  • Easily meets API envelope requirements with 3 units on 21” (533 mm) centers.
  • Easy to operate/maneuver
  • For multiple product applications, it can be mounted close to another arm
  • Crossover can easily be achieved

Library

All OPW Loading Arms can be customized to fit your specific application requirements. We do offer a series of Standard/ optimized solutions that are commonly specified. These optimized selections can be expedited to meet faster delivery requirements.

LBM800 Liquip Balance Mechanism – Bottom Loading Arm


A 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 LBM800 provides effortless bottom loading in petrochemical distribution terminals 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, and 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

  • Velvet Touch provides smooth operation over the entire stroke of the loading arm
  • 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
  • Adjustable up/down stop that can be set with minimal effort
  • Long reach capabilities

Specifications

MaterialsCarbon Steel/Aluminum
SealsLow Temp Fluorocarbon
Working Pressure145 psi (1000 kPa)
Test Pressure217 psi (1500 kPa)
Operating Temp-20° to 140°
Up/Down Angular Movement-15° to +15° (from horizontal)
Typical Horizontal Spacing24" (650 mm)
Typical Vertical Spacing18" (450 mm)
Typical Reach (radius)50" to 80" (1300 mm to 2032 mm)
Typical No. of Arms Per Bayup to 6

Liquip Velvet Touch MK2 Balance Assembly


The Velvet Touch MK2 Balance Assembly has been designed for use with bottom-loading arms in petrochemical-distribution depots. The MK2 features horizontal-plane swivel capability that allows 360° rotation of the bottom-loading arm and easy coverage of the width of a standard API envelope. The vertical-plane swivel allows movement 15° above and below horizontal to satisfy various coupler-height requirements while working in conjunction with twin lift-O-mat struts, which minimizes the amount of effort required to position the API coupler.

Features/Benefits

  • Balance assembly bolts onto the flange, reducing the amount of product inlet pipework needed at loading depots
  • Horizontal spool is bolted onto the outlet flange of the balance assembly
  • Precise balancing of the arm is achieved by repositioning the bottom of the struts for course adjustment
  • Worm-drive screw at the top of the struts enhances fine-tuning capabilities
  • Adjustable up/down stop is integrated into the balance assembly to ensure the struts do not reach their limit while keeping arm movement clear of obstructions, such as roofing

Specifications

MountingBase flange is 4" ANSI 150 raised face flange. Outlet flange is 100mm (4") TTMA pattern.
Technical Data

  • Cast steel construction

  • Ball and needle rolling elements for optimum axial and radial load bearing with minimum friction

  • Grease nipple one side of each swivel with relief valve mounted opposite for efficient removal of old grease and debris

  • Dual o-rings for product seal and dust seal respectively.

  • Viton B70 grade o-rings (* Teflon or other special seals available on request).

  • Brass ball retainer.

Working Pressure1,000 kPa (145 PSI)
Test Pressure 1,500 kPa (218 PSI)
Weight60 kg (132lb)
Operating Temperature-20° to +80°C (-4° to +176°F) for EPDM & Viton B70 grade -40° to +60°C (-40° to +140°F) for Viton GFLT grade
Associated EquipmentSee Velvet Touch loading arm systems.

* Note: The nature of Teflon is that it is unyielding but easily scratched; therefore the slightest damage can lead to weeps particularly where clamping force is provided by a spring which is necessarily limited in force. However the use of Teflon cannot be avoided because of its outstanding chemical resistance. Liquip guarantee the sealing of all new products and test all production prior to dispatch. Following installation of the equipment by the Purchaser it is essential that the valve be kept perfectly clean, any test liquids be perfectly clean and no tools be allowed to touch the Teflon seals. It is not uncommon for valves to exhibit small weeps once in service with commercial-quality liquids.

Compact Torsion Swivel (CTS) Hose Loader


OPW Compact Torsion Spring Swivel (CTS) Bottom Loading Arms are ideal to replace loading arms in situations where tight clearances are required. The CTS Loader features a fully integrated internal torsion spring for a streamlined profile. Ideal for replacing existing FMC TL Loaders or any application where space is a premium. The CTS has been engineered to be easier to adjust and maintain.

Features/Benefits

  • Fully Integral Torsion Spring
  • Integral Upward, Downward Travel Stops
  • Carbon Steel/Aluminum Construction
  • Lo Temp Fluorocarbon Seals
  • Braided Stainless Steel or Rackmaster Composite Hose
  • Available in Left-Hand, Right-Hand, Upfeed, Downfeed Configurations
  • 360° Rotation Allows Loading on Both Sides of Loading Bay
  • Removable End Cap for Easy Maintenance
  • Safe, Easy Spring Adjustment
  • Ideal for Extremely Tight Riser Spacings
  • Horizontal Bearing Module for Added Strength

Specifications

MaterialsCarbon Steel / Aluminum
SealsLo Temp Flurocarbon
Working Pressure 125 psi (862 kPa)
Test Pressure188 psi (1296 kPa)
Operating Temp-20° to 140°
Up/Down Angular Movement+45° to -15° (from horizontal)
Typical Horizontal Spacing11"(279mm)
Typical Vertical Spacing12"(305mm)
Typical Reach (radius)50" to 70" (1270mm to 1778mm)
Typical No. of arms per bayup to 5
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We have an incredible and hard working crew. Each of our team members take pride in what they do and will work tirelessly with you to ensure your project is completed above and beyond your expectations. Our Foster Hose and Fittings Technicians have up-to-date knowledge of hoses, hose components, fittings, and accessories.

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