Counterweight Bottom Loading Arms (CW-30)
The CW-30 Counterweight Bottom Loading Arms are designed for safe and efficient bottom loading operations where flexible reach and stable movement are required. These arms are engineered for tank truck loading applications in petroleum terminals and industrial facilities.
SafeRack supplies CW-30 Counterweight Bottom Loading Arms, providing expert support to help you select 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 for CW-30 Counterweight Bottom Loading Arms, all in one place.
Counterweight Bottom Loading Arms (CW-30)
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Counterweight Bottom Loading Arms (CW-30)
Overview
The CW-30 Counterweight Bottom Loading Arms store the primary arm in a horizontal position on either side of the riser pipe, depending on piping layout and site obstructions. The arm rotates above and below the horizontal plane to easily reach the truck connection point.
This model uses a slide scale counterweight balance system, providing controlled movement and reducing operator effort during operation. Compared to spring-balanced systems, it requires more side clearance for storage but less overhead space, making it suitable for specific terminal layouts.
Key Features
- Counterweight-balanced bottom loading arm system
- Slide scale balance method for smooth operation
- Stores in horizontal position on either side of riser pipe
- Rotates above and below horizontal for flexible reach
- Available in up-feed and down-feed configurations
- Compatible with hose or rigid pipe drop sections
- Suitable for multi-arm installations in confined spaces
- Conforms to API RP 1004 loading envelope
- Heavy-duty industrial paint finish for durability
- Designed for petroleum terminal applications
- Simple installation and low-maintenance design
CW-30 Counterweight Bottom Loading Arms Specifications
| Specification | Detail |
|---|---|
| Model | CW-30 |
| Type | Counterweight Bottom Loading Arm |
| Available Sizes | 3″, 4″ |
| Configuration | Up Feed / Down Feed |
| Balancing Method | Counterweight (Slide Scale System) |
| Storage Position | Horizontal (side of riser pipe) |
| Movement | Above and Below Horizontal Rotation |
| Drop Section | Hose or Rigid Pipe |
| Horizontal Spacing | 18″ Centerlines |
| Vertical Spacing | 16″ Centers |
| Application Standard | API RP 1004 |
Materials of construction
| Component | Material |
|---|---|
| Arm Structure | Carbon Steel |
| Balance System | Counterweight Assembly (Steel) |
| Drop Section | Hose or Rigid Pipe |
| Coupler Components | Industrial Grade Steel |
Source: CW-30 Counterweight Bottom
Source: CW-30 Counterweight Bottom Loading
CW-30 Frequently Asked Questions
The CW-30 Counterweight Bottom Loading Arms are used for safe and efficient bottom loading of tank trucks in petroleum and industrial terminals. They are designed for applications where controlled movement, reliable reach, and stable operation are required during liquid transfer processes.
The CW-30 uses a counterweight slide scale balancing system instead of spring-based mechanisms. This design helps maintain smooth and controlled movement of the arm, reduces operator effort, and provides consistent positioning during loading and unloading operations.
The CW-30 is available in up-feed and down-feed configurations to match different terminal layouts and loading requirements. These options allow the system to be adapted for various piping arrangements and operational setups.
Yes, multiple CW-30 arms can be installed in the same loading bay. They can be spaced on 18-inch horizontal centerlines and 16-inch vertical centers, making them suitable for facilities that handle multiple products in confined spaces.
The CW-30 is widely used in petroleum terminals, fuel distribution facilities, and industrial loading stations. It is especially useful in environments where safe, reliable, and repeatable bottom loading operations are required for liquid transfer.
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