A friend has a Lambert in a Multiplex Twinjet foamie. There is very little room inside so instead of the servo operated valve he has a servo operating the ECU power switch. This also meets the rule as stated:

In addition to the particular turbine manufacturers specified means of shutting the turbine down it is a further requirement that the turbine can be shut down by an independent (independent of the Turbine ECU) receiver channel, which is to be operated remotely by means of the transmitter control. It is also a requirement that the installation include a manual (by hand) means of shutting the turbine down and that this method be accessible during the whole start-up and shutdown phase of the turbine.

No power, no pump, no fuel. - John.