616-F (BS) Cast Iron Gate Valve (NRS) 1. Design and Manufacture Conform to BS5163 2. Flange dimensions Conform to BS4504 PN16ï¼† EN1092 3. Face to Face dimensions Conform to BS5163 PN16 4. Testing Conform to BS6755 5. Rubber material may be also CRã€EPDM etc. 6. All valve surfaces shall be painted with Epoxy resin paint. 7. It can be operated with wrench head according to customerâ€™s requirement.