Nelson and Pade, Inc. sells high quality valves for aquaponics. These include gate valves and true-union ball valves. These high quality valves are used in aquaponic systems to open and close water flow. The gate valves are available in sizes from 1.5″ – 4. True-union ball valves are available in sizes ranging from 1/2″ – 2″
Gate valves use a “gate” that you lift to open, and push down to close. These are durable, quality gate valves. However, replacement parts are available
True union ball valves have a 1/4 turn handle to open and close. These are durable, quality valves that can be used in any application, including for aquaponics.