Pneumatic control valve Size:1''-20'' Pneumatic/Electric Type Cast Steel/Stainless Steel Best price and quality Pneumatic Control Valve (It can be electric type)Applications: Control flow, pressure, temperature, etcTwo types: modulating/control type, shut off/on-off typeMediums: Water, Steam, Oil, Acid, etcWide sizes: 1/2''-20'' or largerMany materilas:Cast Steel/Stainless Steel, WCB, WCC, WC6, ...