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Threaded Connection

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Flanged Connection

Flanged Connection

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Part Number

F311

(Elaflex Part Number: DAC-M 65 Al)

Product GroupDry Aviation Couplings
Dry Aviation Couplings
Example Pictures Hose Unit (Coupler):
Example Pictures Tank Unit (Adapter):
Short DescriptionDAC
Self locking quick connect/disconnect coupling for aviation fuel, to ISO 45, MS24484 and STANAG 3105 - with 2½" bayonet connection.
DescriptionHose unit with swivel, typically mounted on hose assemblies and loading arms for temporary connection between storage tank and mobile transport unit for loading and unloading.
Tank unit without swivel, typically fix mounted as a filling connector on storage tanks, aviation refuellers and mobile tank containers.
CommentQuick and safe connection of hose assemblies and loading arms to mobile and stationary tanks, under pressure and with minimised liquid loss.
DAC couplings are suitable e.g. for bottom loading of aviation refuellers. They are not certified for underwing refuelling. All wetted parts of the coupling are free from yellow metal such as brass/bronze, safeguarding media purity.
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.
Sizes2½" (coupler diameter Ø 105 mm).
ConnectionsBSP/NPT thread, DIN/ANSI/TW/TTMA flange – others on request.
PressureCan be coupled up to 10 bar line pressure.
Working pressure PN 10.
Temperature-20° C up to +55° C; (low temperature version down to -55° C available).
MaterialBody: aluminium
O-Rings: Viton® (FPM/FKM) – others on request.
Flat seal (for female parallel thread connections only): polyurethane – others on request.
Approvals / CertificatesDAC couplings fulfill the requirements of European Pressure Equipment Directive category 2.
They are suitable for the use in potentially explosive atmosphere (ATEX) zone 1, approved for the transport of dangerous goods on road (ADR) and by rail (RID).
TÜV TÜ.AGG 304-99, Lloyd’s Register 0038/ATEX/HAM064017,
TDT-UW-21/16, EAC TC No. RU Д-SE.MЮ62.B.02151
Product Sheet / Links
Overview Approvals
Brochure DAC-Couplings
Homepage DAC-Couplings
Information 2.15
Application Photos DAC:
Animation DAC:
Type of CouplingFemale (Hose Unit, Coupler)
Product NameHose Unit
Part NumberF
Short DescriptionFemale (Hose Unit, Coupler)
DescriptionSelf locking quick connect/disconnect coupling for aviation fuel, to ISO 45, MS24484 and STANAG 3105 - with 2½" bayonet connection.
Hose unit with swivel, typically mounted on hose assemblies and loading arms for temporary connection between storage tank and mobile transport unit for loading and unloading.
CommentQuick and safe connection of hose assemblies and loading arms to mobile and stationary tanks, under pressure and with minimised liquid loss.
DAC couplings are suitable e.g. for bottom loading of aviation refuellers. They are not certified for underwing refuelling. All wetted parts of the coupling are free from yellow metal such as brass/bronze, safeguarding media purity.
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.
Sizes2½" (coupler diameter Ø 105 mm).
ConnectionsBSP/NPT thread, DIN/ANSI/TW/TTMA flange – others on request.
PressureCan be coupled up to 10 bar line pressure.
Working pressure PN 10.
Temperature-20° C up to +55° C; (low temperature version down to -55° C available).
MaterialBody: aluminium
O-Rings: Viton® (FPM/FKM) – others on request.
Flat seal (for female parallel thread connections only): polyurethane – others on request.
Approvals / CertificatesDAC couplings fulfill the requirements of European Pressure Equipment Directive category 2.
They are suitable for the use in potentially explosive atmosphere (ATEX) zone 1, approved for the transport of dangerous goods on road (ADR) and by rail (RID).
TÜV TÜ.AGG 304-99, Lloyd’s Register 0038/ATEX/HAM064017,
TDT-UW-21/16, EAC TC No. RU Д-SE.MЮ62.B.02151
Product Sheet / Links
Overview Approvals
Brochure DAC-Couplings
Homepage DAC-Couplings
Information 2.15
Nominal Diameter2½" (Ø 105 mm)
Product Name2½" (Ø 105 mm)
Part Number3
CommentConnections: 2½" and 3" in BSP, NPT and Flanged inlet.
Material Coupling and BodyAluminium
Product NameAluminium (Standard)
Part Number11
Maximum Working Pressure10 bar
Test Pressure15 bar
Minimum Burst Pressure50 bar
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