Pneumatic Differentiator

[Green 123]

Pneumatic differentiator is a safety device which is fitted to a regulator& shut off control valve at upstream of pneumatic starter of gas turbine engine that is highlighted with red ellipse. Do you have any idea on its working principle?

 

[Compositepro]

The differentiator reduces the rate at which the butterfly valve opens by adjusting the needle valve. With the needle valve open all the way it will have little to no effect.

 

[Green 123]

The differentiator reduces the rate at which the butterfly valve opens by adjusting the needle valve. With the needle valve open all the way it will have little to no effect.

much obliged...