Frequently Asked Questions - GPI Flowmeters > General Flowmeter Questions > What lengths of pipe does GPI recommend before and after their meters such that they provide accurate readings?

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You want to take the diameter of the meter times 10 on the inlet and times 5 on the outlet. For a 1 in. meter this would be 10 in. of straight 1 ft pipe going in and 5 in. of straight 1 ft pipe coming out. If you cannot do this you will not make the meter worthless, but you cut into the accuracy.

Last updated on August 19, 2013 by GPI Industrial Flowmeters