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Product Group: Dry Cryogenic Couplings
Dry Cryogenic Couplings
Example Pictures Hose Unit (Coupler):
Example Pictures Tank Unit (Adapter):
Short DescriptionDCC
Self locking quick connect/disconnect coupling, to ISO TS 18683.
Suitable for the loading and unloading of cryogenic liquefied gases (LNG, nitrogen, oxygen, argon, ethylene etc.) down to -196° C.
DescriptionHose unit with swivel, typically mounted on hose assemblies and loading arms for temporary connection between storage tank and mobile transport units,
e.g. for container discharge, fuel bunkering, loading/unloading of tank trucks, rail tankers and ships.
Tank unit without swivel, typically fix mounted as filling connector for container discharge, fuel bunkering truck-to-ship, ship-to-ship, terminal-to-ship, loading/unloading of tank trucks, rail tankers and ships.
CommentQuick and safe connection of hose assemblies and loading arms to mobile and stationary tanks, under pressure and with minimised product loss.
During the cool down phase no retightening of the connection is necessary as practiced with flanged or threaded connections.
Both coupling parts are equipped with a flat poppet valve. For the connection, the hose unit is pushed onto the tank unit and coupled / sealed by turning the coupler clockwise by 15 degrees.
When the unit is turned by 100 degrees, the valves move into the tank unit so that the medium can flow.
When a similar turn is made counter-clockwise, the flow is stopped and the coupler can be pulled off.
Sizes1" (DN 25) up to 6" (DN 150).
ConnectionsNPT thread, DIN/ANSI flange – others on request.
PressureCan be coupled up to 7 bar line pressure.
Working pressure:
DN 25 - DN100: PN 25,
DN 150: PN 16.
Temperature-196° C up to +85° C.
MaterialBody: stainless steel 1.4404 (AISI 316L).
O-Rings: PTFE.
Approvals / CertificatesDCC couplings fulfill the requirements of European Pressure Equipment Directive category 2 (for higher demand on request).
Suitable for the use in potentially explosive atmosphere (ATEX) zone 1.
Approved for the transport of dangerous goods on road (ADR), by rail (RID) and by ship (IMDG) and EN 14432.
Type approval to DNV GL rules for Liquefied gas carriers, Type examination DNV GL for LNG transfer systems (ISO16904, EN1474-3).

Bureau Veritas TAC 36873_A2_BV 2016, DNV Bauartzulassung P-14490,
ClassNK Bauartzulassung TA15060M, TÜV TÜ.AGG 304-99 , Lloyd’s Register 0038/ATEX/HAM064017,
TDT TDT-UW-21/16, EAC TC No. RU Д-SE.MЮ62.B.02151
Product Sheet / Links
Overview Approvals
Brochure DCC-Couplings
Homepage DDC-Couplings
Application Photos DCC:
Animation Dry Cryogenic Couplings (DCC):
2
Type of Coupling
Tank Unit
Tank Unit

Male (Tank Unit, Adapter)

Self locking quick connect/disconnect coupling, to ISO TS 18683.
Suitable for the loading and unloading of cryogenic liquefied gases (LNG, nitrogen, oxygen, argon, ethylene etc.) down to -196° C.
Tank unit without swivel, typically fix mounted as filling connector for container discharge, fuel bunkering truck-to-ship, ship-to-ship, terminal-to-ship, loading/unloading of tank trucks, rail tankers and ships.

Additional Info
Hose Unit
Hose Unit

Female (Hose Unit, Coupler)

Self locking quick connect/disconnect coupling, to ISO TS 18683.
Suitable for the loading and unloading of cryogenic liquefied gases (LNG, nitrogen, oxygen, argon, ethylene etc.) down to -196° C.
Hose unit with swivel, typically mounted on hose assemblies and loading arms for temporary connection between storage tank and mobile transport units, e.g. for container discharge, fuel bunkering, loading/unloading of tank trucks, rail tankers and ships.

Additional Info
3Nominal Diameter
4Body Material
5Connection
6Connection Detail
7Seals
8Options: Special Types
9Accessories
10Order No.
Product GroupDry Cryogenic Couplings
Dry Cryogenic Couplings
Example Pictures Hose Unit (Coupler):
Example Pictures Tank Unit (Adapter):
Short DescriptionDCC
Self locking quick connect/disconnect coupling, to ISO TS 18683.
Suitable for the loading and unloading of cryogenic liquefied gases (LNG, nitrogen, oxygen, argon, ethylene etc.) down to -196° C.
DescriptionHose unit with swivel, typically mounted on hose assemblies and loading arms for temporary connection between storage tank and mobile transport units,
e.g. for container discharge, fuel bunkering, loading/unloading of tank trucks, rail tankers and ships.
Tank unit without swivel, typically fix mounted as filling connector for container discharge, fuel bunkering truck-to-ship, ship-to-ship, terminal-to-ship, loading/unloading of tank trucks, rail tankers and ships.
CommentQuick and safe connection of hose assemblies and loading arms to mobile and stationary tanks, under pressure and with minimised product loss.
During the cool down phase no retightening of the connection is necessary as practiced with flanged or threaded connections.
Both coupling parts are equipped with a flat poppet valve. For the connection, the hose unit is pushed onto the tank unit and coupled / sealed by turning the coupler clockwise by 15 degrees.
When the unit is turned by 100 degrees, the valves move into the tank unit so that the medium can flow.
When a similar turn is made counter-clockwise, the flow is stopped and the coupler can be pulled off.
Sizes1" (DN 25) up to 6" (DN 150).
ConnectionsNPT thread, DIN/ANSI flange – others on request.
PressureCan be coupled up to 7 bar line pressure.
Working pressure:
DN 25 - DN100: PN 25,
DN 150: PN 16.
Temperature-196° C up to +85° C.
MaterialBody: stainless steel 1.4404 (AISI 316L).
O-Rings: PTFE.
Approvals / CertificatesDCC couplings fulfill the requirements of European Pressure Equipment Directive category 2 (for higher demand on request).
Suitable for the use in potentially explosive atmosphere (ATEX) zone 1.
Approved for the transport of dangerous goods on road (ADR), by rail (RID) and by ship (IMDG) and EN 14432.
Type approval to DNV GL rules for Liquefied gas carriers, Type examination DNV GL for LNG transfer systems (ISO16904, EN1474-3).

Bureau Veritas TAC 36873_A2_BV 2016, DNV Bauartzulassung P-14490,
ClassNK Bauartzulassung TA15060M, TÜV TÜ.AGG 304-99 , Lloyd’s Register 0038/ATEX/HAM064017,
TDT TDT-UW-21/16, EAC TC No. RU Д-SE.MЮ62.B.02151
Product Sheet / Links
Overview Approvals
Brochure DCC-Couplings
Homepage DDC-Couplings
Application Photos DCC:
Animation Dry Cryogenic Couplings (DCC):
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