This series of products are reliable sealing performance, maintenance-free for 20 years, switch torque light, can be installed in heat transfer stations, district heating pipe network, branch pipes, heat exchanger unit, heat transfer equipment or ancillary equipment connected to other.Use for cut off . The main use of the urban heat, city gas, city water supply and drainage lines. Name:industry ball valve Material:casting, forging etc Working pressure: 150-2500lb Size: dn50-dn1200 Sandard: api Operation: handle, electric worm gear Medium: water, oil, gas Lead time: around 35 days Certificate: iso 9001:2008