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Unread 26-09-2016, 10:44
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Re: Motorizied flow control

It is a little Rube Golbergish, but there is a way to make a closed center 3 position valve legal under 2016 rules. You use check valves to allow both sides of the cylinder to flow back the working pressure side of the system. They won't do anything when the system is pressurized, but they will vent the cylinder when the system is depressurized.
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