Series 513 API Coupler For Filling & Unloading
The Snap-On API Coupler Bottom Loading is a semi-automatic dry coupling solution designed for safe and leak-free bottom loading operations in the petrochemical industry. Designed for reliability and operator safety, the coupler provides secure engagement and controlled product transfer while helping reduce the risk of spills and leaks during loading operations.
SafeRack supplies and supports Excel Loading Systems Snap-On API Coupler with expert specification guidance from Regional Area Managers who help you select the right configuration, materials, and connection options for your terminal. Our team provides assistance with system compatibility, installation requirements, and operational performance to ensure safe and efficient loading operations. Get technical support, lead times, and pricing information for the Excel Loading Systems Snap-On API Coupler in one call.
Series 513 API Coupler For Filling & Unloading
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Series 513 API Coupler For Filling & Unloading
Overview
The Snap-On API Coupler Bottom Loading is engineered to provide a secure connection between loading equipment and tank vehicles. Its semi-automatic locking system uses five locking lugs that automatically engage the adapter when the coupler is connected.
The design incorporates a dual-safety mechanism to help protect operators and loading equipment. Product flow can only begin once the coupler is properly connected, and the coupler cannot be disconnected while it remains in the open position.
Key Features
- Semi-automatic API bottom loading coupler
- Designed for dry and leak-free connections
- Compatible with API RP 1004 adapters
- Five automatic locking lugs for secure engagement
- Dual safety locking system
- Prevents flow until coupler is fully connected
- Prevents accidental disconnection during operation
- Simple lever-operated opening and closing mechanism
- Suitable for bottom loading arms and transfer hoses
- Durable aluminum alloy construction
- Hard-coated wear components for extended service life
- Easy maintenance with replaceable seals
Series 513 API Coupler For Filling & Unloading Specifications
| Specification | Detail |
|---|---|
| Model | Excel Loading Series 513 |
| Type | Semi-Automatic API Coupler |
| Application | Bottom Loading Operations |
| Design Pressure | 145 PSI (10 Bar) |
| Test Pressure | 217 PSI (15 Bar) |
| Working Pressure | 43–72 PSI (3–5 Bar) |
| Maximum Coupling Pressure | 100 PSI (7 Bar) |
| Maximum Flow Rate | 660 GPM (150 m³/h, 2500 LPM) |
| Rear Flange | 4″ TTMA |
| Standard | API RP 1004 |
Materials of construction
| Component | Material |
|---|---|
| Main Body | Aluminum Alloy |
| Locking Lugs | Hardened Industrial Metal |
| Wear Components | Hard-Coated Construction |
| Standard Seals | Viton |
| Optional Seals | Buna |
| Rear Flange | Aluminum Alloy |
Series 513 API Coupler For Filling & Unloading Frequently Asked Questions
The Snap-On API Coupler Bottom Loading is used to create a secure and leak-free connection between a bottom loading arm or hose and a tanker equipped with an API bottom loading adapter. It is commonly used in petroleum and petrochemical loading terminals.
When the coupler is pressed onto the adapter, five locking lugs automatically engage and secure the connection. The operator then rotates the lever to begin product transfer. This design provides fast connection while maintaining safe operating conditions.
The coupler includes a dual-safety system. Product flow cannot begin until the coupler is properly connected, and the coupler cannot be disconnected while the valve remains open. These features help prevent spills and accidental disconnections.
The main body is manufactured from aluminum alloy for strength and reduced weight. Wear components are hard coated for durability, while standard sealing options include Viton and Buna materials for reliable sealing performance.
The coupler supports flow rates up to 660 GPM (2500 LPM), making it suitable for high-volume loading operations where efficiency and safe product transfer are important.
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