QED Environmental Systems is the leading manufacturer of innovative environmental products.
For over 35 years their expertise has included Pumping Systems, Landfill Products, and Air Strippers.

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QED's New Orifice Plate Selector Guide

ORPcard foldoutThe Orifice Plate Selector Guide is a handy tool that allows you to quickly determine the best orifice plate size for your application. The Selector Guide shows the different orifice plate sizes for each QED Wellhead and the range between 0.5” and 5.0” WC that will give you the best differential pressure reading and a more accurate flow calculation. You can request a printed version of the Selector Guide be mailed to you by emailing This email address is being protected from spambots. You need JavaScript enabled to view it. and providing us with your mailing address. Or you can download, print, and fold your own.