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A Butterfly valve is a quarter-turn rotary motion valve that is used to stop, regulate and start the flow. Butterfly valves are a quick open type. A 90° rotation of the handle can completely close or open the valve. Butterfly valves come in many forms such as; Zero Offset, Double Offset and Triple Offset and come in a variety of end connections such as Wafer Type, Lugged Type, Double Flanged and Butt Weld Ends.

Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favoured because they cost less than other valve designs and are lighter weight. Larger Butterfly valves are usually equipped with a gearbox where the handwheel is connected to the stem. This will reduce the torque but at the same time reduce the speed of the operation. This type of valve should be installed in the open position. If the valve is closed during installation, the rubber seat will wedge against the valve disc and make it difficult to open.

Butterfly valves are capable of meeting a range of different process requirements. Their body, seat, liner and discs come in a range of materials. 

We stock a wide variety of butterfly valves that cater for a range of different specifications. 

Please get in touch with a member of our team for price and availability.

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