... Welding Joints Media Water/liquid Standard or Nonstandard: Standard (DIN)VALVE Dimension (mm) Working Pressure (㎏/C㎡) Minimum Open Pressure ... -C 02 Rubber ring 1 EPDM/FPM 03 Trap 1 PVC-U/PVC-C 04 Fixed pin ... PVC-C 02 Rubber ring 1 EPDM/FPM 03 Trap 1 PVC-U/PVC-C 04 Fixed block ... , TFT-LCD, LED, wafer; 4. water treatment, clean water, waste water; 5. chemical, Chlor Alkaline, Copper, Aluminium, Steel; 6 ...