... .:G,R,NPT 5.Size:20mm-75mm ppr ball valveFeature:1.Material:Brass(CuZn39Pb3/CuZn39Pb2/CuZn40Pb2, C38500 ... not scaling, no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Convenient installation, reliable, recycled ... Solar heating and cooling equipment system.6. Caliduct, floor and wall heating equipment.7. Piping system for other industries and agriculture. High quality ...