Pneumatic Operated On Off Ball Valve - Pneumatic Ball Valve Manufacturer and Supplier - Control valve-Pneumatic electric pressure flow temperature water control valve manufacturer
The ball valve is used as shut-off valves in the distribution of hot and cold water. - Mereo.info
Ball Valve - High-performance "O" type ball valve, action: on-off - ZHEJIANG DECA CONTROL VALVE METER CO., LTD