Extension, Expansion Joints
Flexible plumbing fittings are available to alleviate the effects of re-active soils, i.e. broken stormwater and sewer drains, which are the major cause of houses cracking, also revolutionising the repair and cut-ins to sewer and stormwater uPVC. The Civil and General Distributors supplied range of Swivel Expansion and Expanda Joints are WaterMark Certified.
The swivel expansion joint is an F&M flexible sewer/PVC “knuckle” joint capable of rotating + or – 15º from its axis, combined with the longitudinal expansion, providing flexibility at normally fixed positions to compensate for natural movement of the soil. It is recommended that the swivel expansion joints are wrapped in a water proofing membrane with copper sulphate to deter root intrusion.
The swivel joint will alleviate breakage of pipes at foundation levels and at the inlet and outlet of all tank systems.
Extension and expansion joints are for use in underground sewer and storm water drains and are available in pipe sizes up to 375 mm.