Derwent Industries Variable Couplings are Australian manufactured. The couplings have been designed to alleviate the issues encountered when connecting pipes of different outside diameters and/or pipe materials. The DERGIB provides the installer with a precise simple way of connecting pipes that have OD variances of up to 24mm.

• 316 Stainless Steel Sleeve for superior corrosion protection

• 316 SS bolts and Nuts coated with molybond to prevent galling

• Flanges are Ductile Iron, fusion coated

• Nitrile Gasket

• Sleeves are fully passivated, ensuring superior quality

• Ease of installation via tension wrench

• All bolts are supplied with plastic thread protectors

• Barrel is convex (not straight) allowing for angular deflection to be achieved

The Derwent Industries Variable Couplings are the perfect solution for joining two sections of pipe together. The coupling allows for an OD variance between pipes requiring joining, allowing for a simple repair to be damaged sections of pipe or for new joins. Regulations at water authorities may differ as to allowable usage.

Variable couplings are NOT suited to all types of pipe such as polyethylene unless a form of restraint is included in the coupling.

Size Range: DN40 - DN 1200

Temperature Range: -10ºC to 60ºC

Max. Operating Temperature: 1600kPa (DN40 - DN600)

Quality Assurance: ISO9001:2015