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Restraint Coupling Marine

The wide range of applications, compact design and ease of installation make Straub restraint couplings ideal for use on marine vessels. The Straub Grip and Straub Metal-Grip couplings join plain pipes with axial restraint. The innovative design absorbs the axial forces from increasing internal pressure with a mechanical frictional connection comprised of anchoring teeth. As the internal pressure increases, the teeth engage deeper into the pipe surface, creating the restraint connection. Whether for pressure or suction lines, thin or thick-walled pipe, Straub restraint couplings install quickly, safely and economically. Straub Fire-Fence couplings provide an internationally approved fire-resistant joining system wherever fire protection is needed.

Used for: Joining and repairing pipes of all types in a marine environment. Internationally approved fire-resistant couplings are available wherever fire protection is needed.

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Product Benefits

  • Fire-resistant couplings can be fitted in fire-risk spaces without special equipment of permits
  • Compact design makes it easy to install in confined spaces
  • Works with plain-end pipe connections
  • No welding required, saving time and labor
  • Universal connection for multiple types of pipe
  • Prevents axial movement of the pipe
  • Quick and easy installation
  • Innovative progressive gripping system – the higher the pressure, the tighter the grip
  • Available in sizes up to 28” (711mm) diameter

With more than 50 years of continuous development and improvement, Straub restraint couplings for marine use are comprised of premium materials and designed for easy installation, trouble-free service and a long lifespan. Straub’s patented progressive sealing effect increases the grip on the pipe as the pressure inside the pipe increases, creating a robust and reliable connection.

Marine Restraint Selection Info Sheet
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