Bottom Loading Arms
Bottom Loading Arms: Safe, Efficient, and Fully Integrated Solutions
The #1 Supplier of Bottom Loading Arms in North America
SafeRack is North America’s leading provider of bulk loading equipment, offering a comprehensive range of bottom loading arms from trusted brands like OPW Engineered Systems and Emco Wheaton. Designed for safe, efficient, and reliable transfer of petroleum, chemicals, and liquefied gases, our bottom loading arms enhance operator safety and streamline operations for tank trucks, railcars, and more. Explore our offerings below, engineered to meet API RP1004 standards and tailored to your specific loading needs.
Industries that rely on SafeRack’s top and bottom loading arms include petrochemical, shipping, oil and gas, wastewater treatment, and gantry systems, among many other industrial applications. With workplace safety as a priority, SafeRack provides tailored solutions to meet your specific loading and unloading needs.
- Coordination with Local Engineering, Vehicle Variables, Gangway and Fall Protection
- Ergonomic Designs and Innovative Technology
- Fluid Level Sensors and Vapor Recovery Solutions
- Grounding and Metering Systems
- Pipe Support Structures
- Insulated, Steam Jacketed and Heat Traced Options
- Breakaway Couplings and Dry Break Disconnects
Bottom Loading Arms
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Why Choose SafeRack for Bottom Loading Arms?
Customer First
Industry Leader
North America’s top distributor of loading arms, trusted across industries.
Full-Service Support
End-to-end design, engineering, and integration for seamless operations.
Custom Configurations
Solutions to match specific flow rates, products, and site needs.
Safe & Efficient
Ergonomic, durable designs reduce downtime and improve safety.
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Bottom Loading Arms
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Couplings
Bulk loading and unloading API couplers and adapters
Swivel Joints
Swivel joints prevent bends in loading hoses that can reduce flow or even tear or rip, releasing harmful chemicals into the air.
Breakaways
Breakaways prevents damage and hazardous spills during pull-away incidents by stopping hose assembly failures before they impact plant piping, bulkheads, or loading arms.
Unsupported Boom Bottom Loading Arm
This heavy-duty, long-reach arm offers flexible operation for bottom loading railcars and tank trucks where precise spotting isn’t feasible. Its unsupported design with multiple swivel planes ensures easy connections and accommodates vehicle movement during loading.
Features
- Five swivel planes for full flexibility
- Spring or counterweight balancing
- 2”-6” sizes in carbon steel, stainless steel, or aluminum
- Optional dry disconnect coupler or quick coupling
Applications & Uses
- Railcar unloading of mineral oils or chemicals
- Tank truck loading with variable positioning
OPW
A-Frame Bottom Loader
A versatile arm popular for its long reach and ease of use, primarily used for tank-truck bottom loading but adaptable for top setups. It’s ideal for handling liquefied petroleum gases like propane and butane with a compact storage profile.
Features
- 2”-4” sizes in carbon steel, stainless steel, or aluminum
- Adjusts for elevation/tilting
- Stores upright with dry-disconnect coupling options
- All-welded LPG variants available
Applications & Uses
- LPG tank truck loading
- Multi-product petroleum terminals
OPW
Counterweighted Hose Loader (OPW CWH Series)
A simple, rugged hose loader with adjustable counterweights for efficient coupling to tank adapters, designed for ease of operation. Its flexible hose and durable swivels make it a reliable choice for standard bottom loading.
Features
- 4” size with 114” reach
- Carbon steel/aluminum construction with DSF swivel
- Adjustable counterweights on rails
- Stainless steel or composite hose options
Applications & Uses
- Petroleum tank truck loading
- Multiple-compartment chemical transfers
OPW
Short Range Hose Loader (OPW SRH)
The SRH loader enables simultaneous loading of up to three product lines with minimal movement, offering a cost-effective, low-maintenance solution. It’s a global standard for converting top-loading racks to bottom loading.
Features
- Carbon steel/aluminum with fluorocarbon seals
- 360° rotation for both-side loading
- Upfeed/downfeed and left/right configurations
Applications & Uses
- Oil terminal tank truck loading
- API-compliant multi-arm setups
OPW
Long Range Hose Loader (OPW LRH-32)
Similar to counterweighted loaders but with a torsion spring counterbalance, this 4” arm provides long reach and easy handling for bottom loading conversions. It’s designed for smooth operation with minimal effort.
Features
- 4” size in carbon steel, stainless steel, or aluminum
- Adjustable torsion spring
- Flanged, threaded, or welded construction
Applications & Uses
- Converting top loaders to bottom loading
- Multi-product tank truck applications
OPW
Compact Torsion Swivel Hose Loader (OPW CTS)
Ideal for tight spaces, this loader features an integrated torsion spring for a streamlined profile, replacing older designs like FMC TL Loaders. It’s engineered for easy adjustment and maintenance.
Features
- Fully integral torsion spring
- Carbon steel/aluminum with fluorocarbon seals
- 360° rotation with upfeed/downfeed options
- Removable end cap for maintenance
Applications & Uses
- Tank truck loading in confined riser spacings
- Replacing legacy bottom loading arms
OPW
Bottom Hose Loader
Specifically designed for multi-arm bottom loading stations, this hose loader provides extended reach and crossover capability for filling multiple tank truck compartments. It’s built for flexibility and high-pressure performance.
Features
- 4” size in carbon steel
- Viton or Buna seals, up to 40 bar (580 psi)
- Spring cylinder balancing
Applications & Uses
- Multi-compartment tank truck loading
- High-pressure petroleum or chemical transfers
Emco Wheaton
Bottom Transfer Loading Arm
A robust arm for bottom loading/unloading where vehicles can’t be accurately spotted, featuring smooth spring balancing and heavy-duty swivels. It’s suitable for both road and rail tankers with flange or coupling connections.
Features
- Spring cylinder with 50° vertical movement
- Carbon steel, -49°F to +572°F range
- Long reach with precise balancing
Applications & Uses
- Mineral oil or chemical road/rail loading
- Applications with heavy connection pipes
Emco Wheaton
Bottom Loading Station Arm
Tailored for bottom loading with vapor return, this arm offers long reach and effortless handling for imprecise tanker positioning. It’s designed for safe, ground-level operation with volatile products.
Features
- Integrated vapor return capability
- High-quality swivel joints
- Long reach with flexible handling
- Robust carbon steel construction
Applications & Uses
- Petroleum or chemical loading with vapor recovery
- Road/rail tankers with flange connections
Emco Wheaton
| Loading Arm Type | Key Features | Applications & Uses | Best For |
|---|---|---|---|
| Unsupported Boom (OPW) | Five swivels, 2”-6”, spring/counterweight | Railcar/truck oil/chemical loading | Flexible, long-reach unsupported |
| A-Frame (OPW) | 2”-4”, adjusts elevation, LPG options | LPG/petroleum truck loading | Versatile LPG handling |
| Counterweighted Hose (OPW CWH) | 4” w/ 114” reach, adjustable weights | Petroleum/chemical multi-compartment | Simple, durable hose loading |
| Short Range Hose (OPW SRH) | Torsion spring, 360° rotation, API-fit | Oil terminal multi-arm loading | Cost-effective multi-line setups |
| Long Range Hose (OPW LRH-32) | 4”, torsion spring, long reach | Top-to-bottom conversion, multi-product | Long-reach spring-balanced loading |
| Compact Torsion Swivel (OPW CTS) | Integral spring, tight-space design | Confined truck loading | Space-constrained replacements |
| Bottom Hose Loader (Emco) | 4”, spring cylinder, optional coupler | Multi-compartment truck loading | High-pressure station setups |
| Bottom Transfer (Emco) | Six swivels, 50° movement, long reach | Oil/chemical road/rail loading | Imprecise spotting durability |
| Bottom Loading Station (Emco) | Vapor return, high-quality swivels | Petroleum/chemical w/ vapor recovery | Volatile product safety |