What is the recommended practice for joining HDPE pipe to mechanical joint valves and fittings?
MJ adaptors or Flange adaptors can be welded to PE pipe. These are then bolted to the other pipe using standard MJ assemblies or flange assemblies. MJ adaptor joints and flanges joints are fully restrained just like fusion-welded joints, so no thrust restraints required. However if the joints in the matching pipe are not fully restrained (bell and gasket), thrust restraint measures are required at the transition.
