With a 3/8" Backbone, The Advanced Misting System is a significantly more powerful system than the Starter or Ultimate systems. Unless you're going to exceed 15-20 nozzles, we don't recommend upgrading to this misting system. It features a pump capable of pressures up to 125psi, which can easily run 10-70 nozzles of your choice. Items included in the kit: Large capacity diaphragm pump with 3/8" fittings 24 volt power adapter ST-24 timer 12 Value T misting assemblies 3 Value L misting assemblies 3/8" metal reservoir bulkhead fitting 3/8" vall valve 2 reducing T connections (3/8" to 1/4") 1 reducing L connection (3/8"t o 1/4") 3/8" reservoir filter (20) 1/4" tubing clips (10) 3/8" tubing clips 35 ft. of 1/4" tubing 15 ft. of 3/8" tubing T connector L connector Zip Drip valve Cable Y connector Reference manual