E2123 Bottom Transfer Loading Arms
Bottom Transfer Loading Arms are engineered for the safe and efficient bottom loading and unloading of road tankers and railcars, particularly in applications where precise vehicle positioning cannot be guaranteed. Their flexible design allows operators to connect to tank vehicles quickly and safely, even when loading points are not perfectly aligned.
SafeRack supplies Emco Wheaton swivel joints, providing expert support to help you choose the right configuration, materials, and sealing options for your application. Our team assists with specifications, compatibility, and system integration to ensure safe, efficient, and reliable fluid transfer operations. Get technical guidance, lead times, and pricing support, all in one place.
E2123 Bottom Transfer Loading Arms
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E2123 Bottom Transfer Loading Arms
Overview
Designed for handling mineral oils, petroleum products, chemicals, and other industrial liquids, these loading arms support both flange and coupling connections. Their rugged construction, precision balancing system, and heavy-duty swivel joints provide reliable performance while minimizing operator effort during loading and unloading operations.
For applications involving heavy connection pipes or specialized transfer requirements, the loading arm can be configured with a six-swivel arrangement, parallel linkage, and gas spring assistance to improve handling and balance. The system can also be customized for cryogenic services, including LNG transfer applications.
Key Features
- Designed for bottom loading and unloading of road tankers and railcars.
- Ideal for applications where precise vehicle positioning is difficult.
- Suitable for petroleum products, mineral oils, chemicals, propane, and LNG. Heavy-duty swivel joints provide smooth operation and long service life.
- Spring-cylinder balancing system ensures effortless handling and positioning. Up to 50° vertical movement allows easy alignment and compact parking.
- Available with flange connections or quick-connect coupling systems.
- Optional six-swivel configuration for handling heavy connection pipes.
- Wide range of seals and elastomers available for specific media compatibility.
- Can be customized with emergency release systems, heating systems, and vapor management accessories.
E2123 Frame Bottom Loader Specifications
| Specification | Details |
|---|---|
| Product Type | Bottom Transfer Loading Arm |
| Available Sizes | 2″ to 6″ |
| Working Pressure | Typical operating pressure up to 150 psi; European models available from 16 to 40 bar; maximum pressure up to 580 psi depending on configuration |
| Test Pressure | Determined by flange rating, pressure class, and project specifications |
| Temperature Range | -50°C to +250°C (-58°F to +482°F) depending on materials, seals, and application requirements |
| Design Type | Articulated bottom loading arm with spring-cylinder balancing |
| Construction | Multi-swivel loading arm with optional parallel linkage and gas spring assistance |
| Compliance | Designed in accordance with industry terminal loading requirements and customer specifications |
| Maintenance | Low-maintenance design featuring serviceable swivel joints, replaceable seals, and durable balancing components |
| Application Industries | Oil & Gas, Petrochemical, Chemical Processing, Fuel Distribution, LNG Facilities, Bulk Liquid Terminals, Rail & Truck Loading Operations |
Materials of construction
| Component | Material |
|---|---|
| Flange Options | Carbon Steel Flanges, Stainless Steel Flanges, Low-Temperature Service Flanges |
| Bearing Module | Heavy-Duty Swivel Joint Assembly with Precision Bearing System |
| Seal Options | Viton, Perbunan, Buna-N (Nitrile), PTFE, FEP, EPDM |
Source: Emco Wheaton E2123 data sheet
Source: Emco Wheaton Bottom Transfer Loading Arms catalog
E2123 Frequently Asked Questions
Bottom Transfer Loading Arms are used for the safe loading and unloading of liquids through the bottom connections of tank trucks and railcars, improving efficiency and reducing vapor emissions.
They are suitable for diesel, gasoline, crude oil, refined petroleum products, chemicals, propane, mineral oils, and cryogenic products such as LNG.
Yes. The articulated design and generous range of movement allow operators to connect safely even when vehicles are not perfectly positioned.
The loading arm utilizes a spring-cylinder balancing mechanism that provides smooth operation, reduced operator effort, and precise positioning.
Yes. Options include D2000 swivel configurations, emergency release systems, heating systems, orientation switches, purge lines, vapor management accessories, and cryogenic service designs.
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Emco Wheaton loading arms
SafeRack is North America’s largest distributor of Emco Wheaton loading arms