Ductile Iron Flanged Ball Valve B2.1 Series two flange ball valve made of cast iron, the sphere of float, in strict accordance with the quality standards of production related products, in line with the ISO 9001 standard. Meet 97/23/CE PED standards and EN 13774 standards, DVGW certification. Product Description: B2.1 Series two flange ball valve made of cast iron, the sphere of float, in strict accordance with the quality standards of production related products, in line with the ISO 9001 standard. Meet 97/23/CE PED standards and EN 13774 standards, DVGW certification. Application: mainly used in heating and air conditioning systems, heating, water supply and water treatment, industrial, agricultural systems, fluid can be compressed air, oil and various compounds. (Please make sure your choice and scope consistent) can be installed in the pipeline in the central and end can be frequently opened, the upper flange standard ISO 5211, can be connected to multiple drives. B2.1 series ball full bore, which can effectively reduce fluid turbulence and head loss. Not for use in steam systems and flow regulation. Diameter: DN15-250