... suitable for heavy pollution conditions.5.Good substitution for solenoid or pneumatic valve. 6. High protection class,can be worked ... seat, NBR o-rings .Body: brass or stainless steelBall: brass or stainless steelStem: brass or stainless steelmini motorized valve, actuated valve, motor ... valve, electric operated valve mini electric ball valve solenoid water for water treatment,HAVC,automatic control