PLASTIC BALL VALVE TYP 21 DN 15 - 100 PN 10 - 16 Advantages � ISO 5211flange for direct actuator mounting � highest quality of used materials for ball valve production     Materials � body 1, ball 2, flanges 3, 5, stem 8: PVC-U, PVC-C, PP, PVDF � seats 6: PTFE � O - rings 9-13: EPDM, FPM