Double containment piping system made from PVC, chlorinated polyvinyl chloride, polypropylene, high density polyethylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for the control, containment and transport of high purity and reverse osmosis deionized water, corrosive and abrasive fluids and corrosive and volatile fumes, namely non-metal rigid pipes made from PVC, chlorinated polyvinyl chloride, polypropylene, high density polyethylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for containing and transporting liquids and fumes, non-metal fittings made from PVC, chlorinated polyvinyl chloride, polypropylene, high density polyethylene, polyvinylidene fluoride and ethylene chlorotrifluoroethylene for rigid pipes in the nature of non-metal tees for rigid pipes, non-metal elbows for rigid pipes, non-metal reducers for rigid pipes, non-metal laterals for rigid pipes, non-metal end caps for rigid pipes, non-metal p-traps for rigid pipes, non-metal restraints for rigid pipes, and non-metal supports for rigid pipes