Repair Couplings

Durability

The couplings, when correctly installed have a design life of 100 years. They are normally suitable for use above and below ground without additional protection due to the high quality of materials used in their construction.

Additional protection may be required with couplings incorporating grade 1.4301 (304) or 1.4306 stainless steel in made-up ground such as industrial spill or colliery spoil and in cases where the ground or ground water contains chloride. In these cases a proprietary protection tape such as 'Densotape' will give satisfactory protection or alternatively couplings incorporating grade 1.4401 (316) stainless steel can be used.