CERTIFICATIONS
Every DAFRAM valve identified by a univocal Serial Number, will be delivered complete with EN 10204 3.1 material certificate of pressure containing parts and 3.1 certificate of pressure tests. In addition, all other certificates concerning special valve tests, destructive or non destructive tests and qualification tests according to purchase order requirements will be included. On customer request a third part inspector can witness every test and issue a certificate in accordance with EN 10201 3.2.
DESIGN
DAFRAM trunnion mounted ball valves design, manufacturing and materials comply with the requirements of the 97/23/EC Directive (PED), API 6D (API 6DSS or API 6A as applicable) and ASME VIII. Pressure/Temperature ratings and the flange design conforms to ASME B16.5 although seat ratings are set according to insert material. Wall thicknesses comply with ASME B16.34 upon request. The ball and stem are indipendent to minimize the effect of the side thrust generated by the pressure acting on the ball.
FIRE SAFETY
The DAFRAM trunnion mounted ball valves have been designed to meet the Fire Safe requirements of BS6755 P.2, API 607 and ISO 10497. Fire qualification tests covering the whole production range have been witnessed by indipendent inspectors.
