With 750 psig of Diesel fuel on its supply connection, is the controllability of the Woodward LQ9 valve effected with a back pressure of 30psig on its excess return line? Thanks.

 

Have you asked Woodward? They would be the best people to ask about back-pressure's effects on the valve, if the information isn't in the manual.

Or, whomever is the packager for the units that is providing the auxiliaries and control devices/system.

 

Thanks for the response. I tried to contact Woodward and the Packager already. I'm assured someone will be getting back to me in a few days. Unfortunately, we're on a tight schedule so I though I would pose the question to the forum.