... switch. 3. Multi-angle assembling,easy to install. 4. Float ball structure,no leakage,especially suitable for heavy pollution conditions.5 ... of main parts:Actuator: heat-resistant ABSSealing: PTFE, silicon rubber ball seat, EPDM and NBR stem seat, NBR o-rings . ... shut off valve, actuator valve, electric operated valve mini electric ball valve solenoid water for water treatment,HAVC,automatic control