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Actuated Diaphragm Valves

Actuated Diaphragm Valves

All Valves Online offer diaphragm valves and a diaphragm control valve range that includes a pneumatic diaphragm valve and electric diaphragm valve, in a variety of materials including plastic and stainless steel diaphragm valves. 


A diaphragm valve is used on shut-off and throttling service for liquids, slurries, gases and vacuum. Diaphragm valves seal by a flexible membrane (the diaphragm), being forced against a seat. The diaphragm seals by pressure exerted on it by a linear motion stem. The most common design is a weir diaphragm valve that has a transverse upstand in the valve body against which the diaphragm seals.

The linear mechanical operating parts of the diaphragm valve are isolated from the flow. This makes diaphragm valves suitable for viscous, abrasive and corrosive media also hazardous substances as its sealing system avoids any contamination towards or from the environment. They are well suited to the handling of multiple chemical applications of both clear, clean fluids as well as a wide range of slurries.

Diaphragm valves are available in a wide variety of metals and solid plastics, typically with EPDM, Viton, NBR or PTFE, diaphragms. The cast iron diaphragm valve is typically found in water applications whereas the stainless steel diaphragm valve is commonly found in hygienic applications.

The most common automatic diaphragm valve is the pneumatic diaphragm valve or air actuated diaphragm valve as this construction creates a relatively inexpensive diaphragm control valve when compared to an electric diaphragm valve.

Allvalves can offer Gemu diaphragm valves, Saunders diaphragm valves and Burkert diaphragm valves, amongst others.

Please select the style of pneumatic diaphragm valve, or electric diaphragm valve you require from the options above.

For more information on Allvalves Actuated Valves range please call us today and speak with one of our experts.

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