Dry Cryogenic Couplings
Dry Cryogenic Couplings (DCC) are designed and optimised for the handling and transfer of cryogenic liquids and gases, such as LNG, nitrogen, oxygen, argon, and ethylene, down to -196°C.
They feature integrated valves and are operated via a turning motion to connect or disconnect, automatically opening and closing flow paths in one motion with minimal product loss.
Featuring a globally standardised connection interface in accordance with ISO/TS 18683, ISO 21593, and other industrial standards, they utilise a bayonet coupling principle that is widely accepted across industries to guarantee global interchangeability.
Applications include the loading and unloading of road and rail tankers, ships, industrial process plant, and ISO containers. Unlike flanged or threaded connections, no retightening is necessary during the cool-down phase.
| Size from: | 1” to 8” |
| Material: | Stainless Steel |
| Seals: | PTFE |
Available with threaded and flanged connections, for both hose unit and tank unit.
Benefits
Handle
Powerful handle - many alternatives to fit specific use.
Connections
Large variety of connections (both thread and flange) for mounting directly on hose or tank.
Weight
Weight optimized.
Integrated swivel
Dry Cryogenic coupling with integrated swivel.
Cam curve
Inner cam curve (protected from external impact).
Technical data
| Socket | Threaded connections | Flanged connections | Flow rate | Materials | Seals | ||
|---|---|---|---|---|---|---|---|
 | 1” (DN25) | 56 mm | NPT | ANSI & EN | Up to 250 L/min | Specified in configurator | PTFE |
 | 2” (DN50) | 70 mm | NPT | ANSI & EN | Up to 900 L/min | Specified in configurator | PTFE |
 | 2½” (DN65) | 105 mm | NPT | ANSI & EN | Up to 2.100 L/min | Specified in configurator | PTFE |
 | 3” (DN80) | 119 mm | NPT | ANSI & EN | Up to 2.800 L/min | Specified in configurator | PTFE |
 | 4” (DN100) | 164 mm | NPT | ANSI & EN | Up to 7.000 L/min | Specified in configurator | PTFE |
 | 6” (DN150) | 238 mm | NPT | ANSI & EN | Up to 14.000 L/min | Specified in configurator | PTFE |
 | 8” (DN200) | 314 mm | NPT | ANSI & EN | Up to 24.000 L/min | Specified in configurator | PTFE |
Service
Service guidance
Service guidance for a MannTek Dry cryogenic coupling.
Innovative accessories
Colour coding
For a clear assignment of coupling and medium, the body, flange and handles of our couplings are available in any…
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Stop before disconnect
This is a feature for detecting eventual leakage before disconnecting the hose and the tank unit. If the valves in…
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Hose unit with electronic sensor
The sensor detects whether the valves are in an open or closed position. The signal from the sensor may be…
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Locking device
Option for hose units. Once coupled, the connection is automatically locked and can not loosen unintentionally. No modification on the…
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Dust cap and dust plug
Dust plug to protect the couplings against the ingress of dirt and water.
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Heated parking device
Heated parking device is used to easily defrost and dry the hose unit after LNG transfer operation. The heated parking…
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Parking device
For safe and dedicated storage of hose unit. Available with or without parking sensor.
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