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Hi

There are two reglators on the pump I would like to confirm that the flow regulator is at the top and the pressure regulator is at the bottom.

Many thanks
 

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One on the top of the pump is third piston deactivator. the one on the rear of the pump is the fuel pressure regulator
 

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Electrovalve is an accurate description. The piston is deactivated by opening a valve (using electricity) to the return feed, so the third piston has no "resistance" to pump against. ;)
 
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