Break-away Couplings
Produced by BMT Superlok · Revision R0 / October 2023
Selection guide
Emergency disconnect couplings designed to shut down flow when excessive system stress causes separation, helping reduce uncontrolled leakage on cryogenic transfer lines.
Technical selection snapshot
Cryogenic Break-away Couplings — SCBAC Series · Revision R0 / October 2023
- Function
- Emergency separation coupling that shuts down flow when excessive system stress causes separation.
- Series / type
- SCBAC
- Best used for
- Cryogenic transfer lines, LNG bunkering and tank truck/rail tanker loading and unloading service.
- Typical system location
- LNG bunkering, tank truck loading/unloading, rail tanker transfer, tank vessel transfer and vapor recovery lines.
- Pressure / class
- MWP 25 bar for 1 in. to 4 in.; MWP 16 bar for 6 in. to 8 in.
- Temperature range
- Lowest working temperature -196°C.
- Size / connection range
- Sizes 1 in. to 8 in.; threaded and flanged options.
Selection note. Select by line size, end connection and required breaking force. Verify breaking force, pressure class and connection style against system conditions.
Key points
- Designed for cryogenic media such as LNG and nitrogen
- Shuts down fluid flow during emergency separation
- Two poppets close rapidly after separation
- Helps minimize spillage and uncontrolled leakage
- Lightweight, simple and robust design
- High flow rates and low pressure loss
- Easy on-site reassembly after separation
- Sizes 1 in. to 8 in.
Reference
Applications & selection guide
Where it sits in the system
- Cryogenic transfer lines
- LNG bunkering lines
- Tank truck loading/unloading
- Rail tanker transfer
- Vapor recovery lines
Typical systems & markets
- LNG
- Industrial gas
- Marine bunkering
- Cryogenic logistics
- Low-temperature fluid transfer
Selection reason
- Emergency disconnect function
- Flow shutoff during separation
- Selection by breaking force
- Threaded and flanged connection options
- Catalog provides size, weight and breaking force data
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