Upper Standard ONLY - Bronze & Aluminum - 18 &30 GPM

A direct replacement Upper Standards for size 18 and 30gpm pumps. Available in either bronze or aluminum. 

If you are unsure of which one you have, you can confirm by measuring the diameter of your current upper standard, or of your pump base's overall diameter. Please note that these parts must be paired with the same metals used on the pump base, or metallic corrsosion will prematurely age and wear out both pieces.

18gpm Upper Standard Diameter: 3.25"

30gpm Upper Standard Diameter: 5"

Top Diameter of 18gpm pump: 8"

Top Diameter of 30gpm pump: 10"