Parker / Autoclave Engineers FCD - Medium Pressure Straight Couplings/Union Couplings

All Autoclave valves and fittings are supplied complete with appropriate glands and collars. To order these components separately, use order numbers listed. When using plug, collar is not required.

To ensure proper fit use Autoclave Engineers tubing.

All dimensions for reference only and subject to change.

Unit of Measure

Items	20FX4466 Straight Coupling	20UFX4466 Union Coupling	20FX6666 Straight Coupling	20UFX6666 Union Coupling	20FX9966 Straight Coupling
Connection Type	N/A SF250CX	N/A SF250CX	N/A SF375CX	N/A SF375CX	N/A SF562CX
Outside Diameter Tube	N/A 6.35 mm1/4 in	N/A 6.35 mm1/4 in	N/A 9.53 mm3/8 in	N/A 9.53 mm3/8 in	N/A 14.29 mm9/16 in
Pressure Rating	N/A 20000 psi1378.93 bar
Minimum Opening	N/A 0.125 in3.18 mm	N/A 0.125 in3.18 mm	N/A 0.219 in5.56 mm	N/A 0.219 in5.56 mm	N/A 0.359 in9.12 mm
A - Typical Hex	N/A 0.62 in15.75 mm	N/A 0.62 in15.75 mm	N/A 0.75 in19.05 mm	N/A 0.75 in19.05 mm	N/A 1 in25.4 mm
B - Width	N/A 1.62 in41.15 mm	N/A 1.62 in41.15 mm	N/A 1.75 in44.45 mm	N/A 1.75 in44.45 mm	N/A 2.12 in53.85 mm
C - Length	N/A 0.38 in9.65 mm	N/A 0.38 in9.65 mm	N/A 0.44 in11.1 mm	N/A 0.44 in11.1 mm	N/A 0.53 in13.46 mm
D - Typical Hex	N/A 0.5 in12.70 mm	N/A 0.5 in12.70 mm	N/A 0.62 in15.75 mm	N/A 0.62 in15.75 mm	N/A 0.94 in23.88 mm
Tubing Engagement Depth	N/A 0.55 in14.0 mm	N/A 0.55 in14.0 mm	N/A 0.69 in17.6 mm	N/A 0.69 in17.6 mm	N/A 0.81 in21.0 mm