modulating control valve 1.Material:Stainless steel 2.Driven:Pneumatic,Motor-driven,Manual 3.Madium:Water,Oil modulating control valveThis gate valve is specially ... be made optionally according to different requirement.- Direct pass gate, no jam, no slag, open and close flexible.- Short structure design, powerful ... can be: Manual, Pneumatic, electric and electric-hydraulic. modulating control valve