The pneumatic valves can be used to intercept hydrocarbons such as diesel, gasoline, kerosene, airplane fuel products and various solvents with the exception of special versions requested by clients for the specific use. In standby (no low flow and high flow air supply) the shutter, attached to the shaft, presses on gasket  thanks to the action of a spring preventing the “IN”-“OUT” passage. Once closed, the action of the spring is reinforced by the force due to the differential section defined by the construction diameters of the shutter and its inner guide which contributes to the “seal” of the valve.

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