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Break-away Couplings

Safety break-away couplings are used to prevent pull away accidents, protect terminal and loading/unloading equipment and eliminated unwanted product release.
The break-away coupling has a diverted breaking point which will break at a determined break-load where upon the internal valves will automatically close on both sides.
  • 1”~8”

  • PERFECT Loading, Manntek, OPW, Staubli, ARTA

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What Is a Safety Break-Away Coupling?

A safety break-away coupling is like the emergency brake of fluid transfer systems. It’s a device installed in hose lines or loading arms that acts as a “weak link” designed to snap apart under excessive force, sealing both ends to prevent spills. These couplings are critical in industries where fluid transfer is a daily operation, from oil and gas to chemicals, food processing, and even aviation.

Why do we need them? Picture a tanker driving off while still connected to a hose. Without a break-away coupling, you’d have a ruptured hose, a massive spill, and a costly cleanup. These couplings are engineered to sense excessive tension or pressure, disconnect safely, and shut off the flow instantly. It’s like having a guardian angel for your equipment, workers, and the environment.


Break valves              hose valve

     Safety Break-away Couplings for Loading Arms                                           Safety Break-away Couplings for Hoses


How Does a Safety Break-Away Coupling Work?

A safety break-away coupling is made of two halves, each equipped with a valve and a seal (usually an O-ring). These halves are held together by break bolts or shear pins, which are calibrated to snap at a specific force. When a hose is pulled too hard—during a drive-away incident—the bolts break, the coupling separates, and the valves slam shut. It’s like a trapdoor closing in a split second, locking the fluid inside and preventing leaks. This all happens automatically, no human intervention needed.

BOLTS

Safety Bolt/Shearing Pin


Key Features of Break-Away Couplings:

What makes these couplings so special?

1. Automatic Shutoff:

When the coupling separates, valves close instantly, minimizing spills.

2. Customizable Break Points:

Break bolts or pins can be calibrated to snap at specific forces, ensuring they only disconnect when needed.

3. Durability:

Built to withstand harsh environments, from salty marine conditions to extreme temperatures.

4. Versatility:

Works with a range of fluids—oil, gas, chemicals, LPG, even food-grade liquids.

5. Easy Reset:

After a break, most couplings can be reassembled on-site with minimal tools, getting you back to work fast.

6. Spill Prevention:

Valved designs ensure near-zero leakage, protecting workers and the environment.

These features make break-away couplings a must-have for any high-stakes fluid transfer operation.


Specifications of Break-Away Couplings:

When choosing a safety break-away coupling, you’ll want to know the specs.

1. Size:

Available in sizes from 1” to 8” (25mm to 200mm) to fit various hose diameters.

Smaller sizes are great for chemical transfers, while larger ones handle bulk oil or gas.

2. Pressure Rating:

Typically ranges from 230 PSI (aluminum) to 360 PSI (stainless steel) at ambient temperatures.

3. Temperature Range:

Most operate between -20°C to +80°C (-4°F to +176°F), with specialized seals for cryogenic or high-temp applications.

4. Flow Rate:

Designed for high flow with minimal pressure drop, ensuring efficient transfer.

5. Connection Types:

Options include NPT threads, flanges (ANSI, DIN, ISO), or hose shanks, making them adaptable to your setup.

These specs vary by brand and model, so always check with the manufacturer to match your needs. It’s like picking the right tires for your car—size, pressure, and conditions all matter.


Materials of Break-Away Couplings:

The materials are chosen for durability, chemical resistance, and safety. Here’s the lineup:

1. Stainless Steel (316):

The go-to for marine and chemical applications. It’s corrosion-resistant, strong, and handles harsh fluids like saltwater or acids.

2. Aluminum:

Lightweight and cost-effective, ideal for non-hazardous fluids like water or petroleum.

3. High-Performance Polymers:

Used in seals for chemical resistance. Think Viton, Buna-N, or PTFE—each chosen for specific fluids.

4. Specialty Alloys (Hastelloy):

For extreme conditions, like cryogenic LNG transfers or highly corrosive chemicals.

The seals are just as critical. Viton is great for chemicals, while Buna-N handles petroleum well.


Seals of Break-Away Couplings:

Seals are the heart of a break-away coupling’s leak-proof magic. Most use O-rings made from materials like:

1. Viton:

Resists chemicals and high temperatures, ideal for LPG or acids.

2. Buna-N:

Great for petroleum-based fluids, but less resistant to extreme heat.

3. PTFE:

Handles aggressive chemicals and offers low friction.

These seals compress tightly when the coupling is connected, ensuring a leak-free seal. When the coupling breaks, the valves rely on these seals to close off the flow. Regular inspection is key—worn seals can compromise performance.


Applications of Break-Away Couplings:

Here are some key applications:

1. Oil and Gas:

Prevent spills during ship-to-shore or tanker loading. Think crude oil, LNG, or gasoline.

2. Chemical Processing:

Handle hazardous chemicals safely, from acids to solvents.

3. Marine Operations:

Protect against spills in ship-to-ship or offshore platform transfers.

4. Food and Beverage:

Hygienic couplings ensure safe transfer of liquids like milk or syrup, with FDA-approved seals.

5. Aviation:

Transfer jet fuel with zero leaks, meeting strict ISO 45 standards.

6. Rail and Road Tankers:

Prevent spills during loading/unloading at terminals.


Operation of Break-Away Couplings:

Using a break-away coupling is straightforward. It’s installed between a hose and a fixed point (like a loading arm) or between two hoses. The coupling allows normal fluid flow during operation, with minimal pressure loss. If an excessive force (like a tanker pulling away) is applied, the break bolts snap, the coupling separates, and the valves close.


Maintenance of Break-Away Couplings:

Here’s how to keep them in tip-top condition:

Inspect Regularly:

Check seals, valves, and break bolts for wear or corrosion.

Clean Thoroughly:

Remove debris or fluid residue to prevent valve sticking. Use manufacturer-approved cleaners to avoid damaging seals.

Test Periodically:

Simulate a break (safely!) to ensure the coupling activates as expected.

Replace Seals:

Swap out O-rings if they show signs of cracking or deformation. Keep spares on hand for quick fixes.

Lubricate Moving Parts:

Some couplings benefit from light lubrication to keep valves moving smoothly.

Store Properly:

When not in use, store in a dry, clean environment to prevent corrosion.

Regular maintenance is like oiling your bike chain—it keeps everything running smoothly and extends the life of your investment.


Delivery Cycle:

In Stock


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