Range : Sizes from 63 mm to 315 mm (2”- 12”). Standards : Available Standards: ISO/DIN, ANSI/ASTM. Working pressure : At 20oC D63-D315 (2”- 12”) PN 6 (90 PSI @ 73oF)Features : Requires little space in piping systems. Easy installation - wafer body slips between standard flanges. No gaskets required. Vertical and horitzontal operation. Available with EPDM or FPM O-Rings. Excellent flow characteristics