14J21 Clamshell Flexible Couplings

The Hydraflow clamshell is a threadless flexible coupling with a unique safety feature for fluid transfer in motorsport applications and used with industry standard flanges.

The clamshell closure locks automatically when the two halves are snapped together and cannot disengage accidentally since all three latch pawls must be lifted simultaneously to disengage the latch. 

Additionally, there is a unique safety locking device which ensures correct installation as it cannot be engaged until the clamshell has been correctly closed. 

The Hydraflow 14J21 was originally designed to meet stringent military and aerospace criteria which have been carried over to motorsport applications.

Finished in striking red, the 14J21 series is available in all tube diameters from 0.5” through to 4” with butt weld aluminium flanges and seals offered to complete the package. 

CAD models will also be available upon request.


Selecting a coupling

Use the tables below to determine the correct size and diameters required for your application.

See PDF in 'Downloads' window for more information.

Clamshell

Dimensions/part numbers

Tube Size RefCoupling AssemblySeal SizeDimensions A MaxDimensions B Max E RefWeight (Lbs)
0.50014J21-08A-0150.890.851.060.033
0.62514J21-10A-0170.950.851.160.036
0.75014J21-12A-1171.040.951.270.046
1.00014J21-16A-2141.181.041.490.061
1.25014J21-20A-2181.291.041.740.069
1.50014J21-24A-2221.431.042.030.078
1.75014J21-28A-2241.551.042.240.084
2.00014J21-32A-2261.691.082.530.101
2.25014J21-36A-2281.801.082.870.112
2.50014J21-40A-2301.911.093.080.130
3.00014J21-48A-2342.181.133.690.187
3.50014J21-56A-2382.441.134.190.223
4.00014J21-64A-2422.681.134.790.248

Flange

Dimensions/part numbers

Tube Size RefCoupling AssemblySeal SizeDimensions
A +/- .002
Dimensions
B +/- 0.10
Dimensions
E +/- .002
Weight (Lbs)
0.50014F03-08D-0150.6850.7390.6820.010
0.62514F03-08D-0170.8100.7390.8070.013
0.75014F03-08D-1170.9900.7730.9870.017
1.00014F03-08D-2141.2660.8281.2630.023
1.25014F03-08D-2181.5160.8281.5130.030
1.50014F03-08D-2221.7860.8281.7830.035
1.75014F03-08D-2242.0360.8282.0330.042
2.00014F03-08D-2262.3090.8442.3060.051
2.25014F03-08D-2282.5590.8442.5560.058
2.50014F03-08D-2302.8090.8442.8060.065
3.00014F03-08D-2343.3090.8443.3060.079
3.50014F03-08D-2383.8210.8443.8180.091
4.00014F03-08D-2424.3280.8444.3240.111