Suits the 12 or 20 Jet Plumbing Kits listed above. Add this item to modify the above kit to utilize a diverter valve - this will make 2 distinct 'jet zones' in the spa. With the diverter to either side, half the jets will receive great pressure, with the diverter half way, all the jets will receive lesser equal pressure, possibly requiring some jets to be shut for better performance (this position would be used when entertaining with a spa full of people, rather than solo or twin use - allows more jets to be installed whilst still easily controlling zone performance). Includes 2" diverter valve and street 90 degree elbows. For the 12 Jet Kit - a 1 or 1.5hp pump could be used, for a 20 Jet Kit - a 1.5 - 2hp pump could be used.