flow meter OEM from CHINA 1>variable area metallic flowmeter 2>S.S.304,S.S.316,S.S. ... flow meterKF800 series metallic rotameter is one of variable-area flowmeter with simple structure,work reliable,wide application field,high precision ... temperature proof,safety,ocular reading etc,it is suitable for chemical industry,petroleum,metallurgy,power plant,environmental protection,medical science.principle ...