Pneumatic Ceramic Ball Valve,Excellent abrasion resistanceaaSmoothly openingaaLight weight, easy installationaaLow Maintenance Pneumatic Ceramic Ball ValveExcellent abrasion resistance,Smoothly opening,Light weight, easy ... installation,Low Maintenance costs,Reusability Control Manual , Pneumatic,Electric,HydraulicMain Parts Material:Body( S/S,Carhon steel ...