What is the difference between butterfly valve and butterfly check valve?

The most intuitive difference between butterfly valve and butterfly check valve is the appearance:

Butterfly valve refers to a valve in which the closing part (disc or butterfly plate) is a disc that rotates around the valve shaft to open and close. It mainly cuts off and throttles the pipeline.
Butterfly valves require manual operation or control

Butterfly check valve is a kind of check valve with swing action. It has double valve plates and is closed under the action of spring. It has simple structure, small size and light weight. Control is an automatic valve.

For more detailed information on butterfly valves and butterfly check valves, contact VALTECCN, professional butterfly valves and check valves, suppliers and manufacturers.