UFF / UWW Universal
Two metal bellows elements connected with a pipe centre spool and fitted with fixed flanges, floating flanges or pipe weld ends for use in absorbing movements in pipelines. The joint has no movement restraining hardware attached. Internal flow liners can be fitted to assist with obtaining a smooth flow and to minimise friction losses.
Suitable for –
Lateral (offset) – moderate
Combination of axial and lateral
This type of joint tends to be unstable at higher pressures and larger movements.
Manufactured to the guidelines laid down in the Standards of the Expansion Joint Manufacturers Association Inc. (EJMA).
Pressure Rating – standard joints
1 and 2 bars – subject to pressure capability of attached hardware.
Bore Size Range – standard
50 – 3000mm
Type UFF – fixed flanges both ends
Type UWW – pipe weld ends both ends
Type UFW – flange one end, weld end the other
Pipework System Notes
This joint will not absorb pressure thrust forces. Being unrestrained, to function correctly it needs to be properly guided and the piping system must be provided with substantial main anchors to restrain pressure thrust forces imposed on the system.
RADCOFLEX recommends you consult your pipework engineer on pipework design and expansion joint selection.
Full technical specification booklets are available from RADCOFLEX to assist.