There are three types of Butterfly Valve:

1. Resilient Butterfly Valve which has a flexible rubber seat. Working pressure up to 1.6 Mpa
2. High performance butterfly valve which is usually double eccentric in design . Working pressure up to 5.0 Mpa
3. Tricentric butterfly valve which is usually with metal seated design. Working pressure up to 10.0 Mpa

Butterfly valves are also commonly utilised in conjunction with carburetors to control the flow of air through the intake manifold and hence the flow of fuel and air into an internal combustion engine. The butterfly valve in this circumstance called a throttle as it is 'throttling' the engines aspiration. It is controlled via a cable or electronics by the furthest right pedal in the drivers footwell (although adaptions for hand control do exist). This is why the accelerator pedal in some countries is called a throttle pedal.

More products of valves

Globe Valves

Safety valves

Plug Valves

Reducing Valves

Balance Valves