Non-Axial Restraint Coupling

Flexible Coupling

The Straub-Flex coupling will join virtually any plain-ended pipe, including pipes made from different materials. Straub-Flex couplings install quickly, safely, and economically and can accommodate pipe system expansion and contraction as well as angular deflection. Straub Open-Flex couplings offer all the Straub-Flex benefits in a split-coupling version that allows for repairs to in-service pipelines. Leaks due to faulty weld joints, pitting holes, and short cracks can be permanently repaired with minimal downtime. The split gasket design, either hinged or with a two-piece casing, wraps around the pipe with no disassembly. Straub’s flexible couplings can be restrained when combined with an M11 harness.

Used for: Non-axial couplings that are suitable for joining and repair of pipes that experience axial movement due to thermal growth and other factors. Available as one-piece or two-piece couplers for all types of materials, up to 144” (3.66m) in diameter. Special sizes are available on request.

Product Benefits

• Easy to install
• Saves time, labor, money
• Ideal for applications requiring axial movement due to thermal growth or other factors
• Suitable replacement for expansion joints
• Eliminates welding. No special tools required
• Detachable and reusable
• Joins different pipe materials
• Flexible connection that compensates for pipe imperfections such as misalignment, angular deflections, ovality, gap and rough surfaces