Product DescriptionR51100 series eccentric segmental ball valve provide simple  fluid path which brings small resistance, valve body is compact and light, wide range ability and accuracy. Eccentric segmental ball structure minimizes contact with the seat ring when opening, reducing seat wear and friction, prolonging seat life,  and improving throttling performance.This style of rotary control valve suits erosive,slurry working condition. Rugged mental trim and big output torque ensure dependable working in rated pressure drop.Product Parameters      (1)Plug seal packing: self-sealing packing system Graphite Packing system(2)Temperature Range : -196℃~538℃(3)Leakage: ANSI B16 104 CLASS V(4)Flow characteristic : Approximate Linear (5)Range ability : 100:1(6)Flange connection standard: JB/T 79.1-94~JB/T 79.4-94/HG20616-97