Pneumatic Control Valve(Water,Steam,Oil) Size:1''-20'' Pneumatic/Electric Type Cast Steel/Stainless Steel Best Price&Quality Pneumatic Control Valve (It can be electric type)Two type: modulating/control type, shut off/on-off typeMedium: Water, Steam, Oil, Acid, etcWide size: 1/2''-20'' or larger Many materilas:Cast Steel/Stainless Steel, WCB, WCC, WC6, WC9, 304SS, 316SS, etcHigh Pressure:PN1.0-10 ...