ORIGINAL: Justflying1
What a load of crap.
If the pump is running flat out and needs to be shut off you want the valve on the suction side so there is no chance of the pump blowing a fuel line off and starting a fire.
It's a shame this guys lack of manners took away from the conversation I think putting the valve on the suction side would not only be a restriction but if the vacuum was overcome it would allow the rest of the fuel in the line to drain into the turbine. Responding to this guys "load of crap" comment, I always felt that if you secure your pressure lines properly, they should be able to withstand the pumps full pressure. :-)
Scott