Double Union PVC Ball Valve + Pneumatic Actuator Á¶¸³ ½Ç¹°»çÁø ÀÔ´Ï´Ù.
Double Union PVC Ball Valve + Pneumatic Actuator+Solenoid Valve+Limit Switch Box+Air Set+Vent Speed Controller Á¶¸³ ½Ç¹°»çÁø ÀÔ´Ï´Ù.