Non-Axial Restraint Coupling

Flexible Coupling

The Straub-Flex coupling will join virtually any plain-ended pipe, including pipe 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 in service pipelines. Leaks due to faulty weld joints, pitting holes and short cracks can be permanently repaired with minimal down time. 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) diameter. Special sizes 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