... .Groove as Victaulic standard 4.EPDM gaskt 5.DN15-DN500 pipe fittingNameCoupling, elbow, tee, cross, reducer, cap, mechanical tee, mechanical cross ... ",DN15-DN500MaterialDuctile iron,ash ironFinishPaint, Epoxy or Galvanization ApprovalFM/ULUsage1) Automatic sprinkler system for fire protection on commercial, civil and municipal ...