Product description: Design: As per registered Copyright Designs. Copyright design no. : A - 101798 / 2013 dt: 05.07.2013 Material of Construction: In DI (Ductile Iron) as incorporated in ISO & Indian Standards. Material of Sealing Rubber Gaskets: EPDM Polymer - Type 3 of IS: 5382/1985. Hydraulic Testing: As incorporated in Indian Standards / as required by the client.