Straub® Mechanical Couplings

Straub® Couplings eliminate the need for any kind of pipe end preparation and only require a torque wrench to install. They save time and money and are easy to handle as they are lightweight and have a low profile. They are also reusable and eliminate the need to weld.


Applications

  • Water supply

  • Gas supply

  • Groundwork and industrial

  • Shipbuilding and offshore

Straub® Mechanical Couplings Products

Important Information
Straub Metal Grip 30 – 219.1 mm
Straub Grip L 21.3 – 219.1 mm
Straub Grip L 180 – 711.2 mm
Straub Combi Grip 40 – 160 mm
Straub Plastic Grip 40 – 160 mm
Straub Flex 1L 48.3 – 168.3 mm
Straub Flex 2 172 – 2032 mm
Straub Open Flex 1L 48.3 – 168.3 mm
Straub Open Flex 2 172 – 2032 mm
Straub Clamp SCE 44 – 330 mm
Straub Clamp SCZ 88 – 440 mm
Straub Accessories

Features & Benefits

  • Used to join almost any material

    Straub® Couplings can be used to join almost any material including PVC, steel, ductile iron and concrete.

  • Progressive sealing effect

    Increasing internal pressure increases the contact pressure of the sealing lip.

  • Progressive anchoring effect

    Straub® Couplings are easy on pipes. As the pressure increases, so does the gripping effect.

  • Space saving

    Requires low storage space:

    • Good accessibility
    • Locking part can be rotated into the optimum fitting position – access only necessary from one side
    • Close pipe arrangement possible, providing space for other components
    • Small space required for later installation
  • Fast and economical
    • Installation without special tools
    • No work required on pipe ends
    • Removable and reusable
    • Short installation time and minimum downtime
    • High assembly tolerances
  • Multipurpose
    • Connects the broadest variety of pipe materials; also ideal for CuNiFe
    • Connects different diameters
    • Can be used for pressure, drainage and suction pipes
  • Safe
    • No risk of fire or explosion during installation
    • No costs for safety measures
    • Quadruple safety factor
    • Straub® has all IACS approvals
    • Flexible design absorbs over-stressing
  • Damping
    • Plenty of rubber to absorb vibrations/oscillations
    • Reduces pressure blows
    • Reduces fatigue failures
    • Noise reduction increases passenger comfort
  • Tension-free
    • Increases the life of fittings and systems
    • Compensates for axial displacement and misalignment
    • Coupling and compensator in one
  • Long life
    • Corrosion resistant
    • Strong resistance to heat and chemicals
    • Low torque guarantees long life
Product Properties
Certifications & Approvals
Installation
Downloads
Straub® Metal-Grip & Straub® Grip
Outside Diameter: 30.0 up to 609.6mm
Temperature: -30°C up to +100°C
Sealing Sleeve: EPDM, NBR
Straub® Combi-Grip & Straub® Plast-Grip
Outside Diameter: 38.0 up to 355.0mm
Temperature: -20° up to +100°C
Sealing Sleeve: EPDM, NBR
Straub® Flex
Outside Diameter: 48.3 up to 4064.0mm
Temperature: -20° up to +180°C (Straub® Flex 3.5 + 4 up to +100°C)
Sealing Sleeve: EPDM, NBR, FPM/FKM
Straub® Clamp
Outside Diameter: 44.0 up to 320.0mm
Sealing Sleeve: EPDM (NBR available on request)
Technical
Please refer to the Straub® website for further information.

Approvals

Straub® pipe couplings have been tested by all leading international classification societies and approved for almost all pipe systems and in shipbuilding. For a full list of all approvals please download the Straub®  Technical Manual under the Downloads tab.

Quick Reference Installation Guide

Straub Jointing

PDF download

Technical Manual

Further Resources

Please refer to the Straub® website for further information.

Product Properties
Straub® Metal-Grip & Straub® Grip
Outside Diameter: 30.0 up to 609.6mm
Temperature: -30°C up to +100°C
Sealing Sleeve: EPDM, NBR
Straub® Combi-Grip & Straub® Plast-Grip
Outside Diameter: 38.0 up to 355.0mm
Temperature: -20° up to +100°C
Sealing Sleeve: EPDM, NBR
Straub® Flex
Outside Diameter: 48.3 up to 4064.0mm
Temperature: -20° up to +180°C (Straub® Flex 3.5 + 4 up to +100°C)
Sealing Sleeve: EPDM, NBR, FPM/FKM
Straub® Clamp
Outside Diameter: 44.0 up to 320.0mm
Sealing Sleeve: EPDM (NBR available on request)
Technical
Please refer to the Straub® website for further information.
Certifications & Approvals

Approvals

Straub® pipe couplings have been tested by all leading international classification societies and approved for almost all pipe systems and in shipbuilding. For a full list of all approvals please download the Straub®  Technical Manual under the Downloads tab.

Installation

Quick Reference Installation Guide

Straub Jointing

PDF download

Downloads

Technical Manual

Further Resources

Please refer to the Straub® website for further information.