The Straub Open-Flex Coupling comes in several different wrap-around configurations that allow them to be used to connect or repair pipework without removing existing pipes. Choose from jointed, slotted, two-part, or three-part.
A progressive sealing effect increases the force on the sealing lips as the pressure in the pipe increases. This gives the pipework flexibility at every joint with anchoring and sealing functions that are independent from each other.
You can use these reusable Open-Flex Coupling on plain-ended pipes without additional modifications.
The Open-Flex 1L model has a size range of 48.3–168.3mm while Open-Flex 2 is available from 172–2032mm.
Open-Flex 2: 172–2032mm
Open-Flex 2: PN2.5, PN6, PN10, PN16, PN20, PN25
Open-Flex 2: S355MC hot-dip galvanised, AISI 316 L or similar
AISI 316 L or similar
Open-Flex 2: AISI 316 L or similar/HDPE
Sealing sleeve and temperature range
NBR (-20°C to 80°C)
FPM/FKM (-20°C to 180°C)