1) Air control valve usually for water and steam 2) 2/2 way valve 3) Spring force or air force 4) Port size from G1/2 to G2 5) Media: water, air, oil, steam 6) Working pressure: 0-10bar 7) Control pressure: 2-6bar 8) Working temp.: 0-60c or 0-150c 9) Orifice from DN15 to DN50 10) Valve body: brass 11) Seal: Viton and teflon Packing: Box