A direct comparison of the 3 versions of metering valves we sell to upgrade your Harbor Freight Blast Cabinet. Please visit us at https://www.partswasherupgradekit.com to learn more about all of our blast cabinet and parts washer upgrades kits and parts. Also, learn how to dial-in your metering valve by watching    • Right Way to Dial-in your Harbor Frei...   Please subscribe and thanks for watching.