Why do you use so many DI cartridges

This model is specifically designed to provide absolutely pure

flow valve

MBD-30 is manufactured from nuclear grades of gel Type I strongly basic anion resins and strongly acidic sulfonated polystyrene gel type cation exchange resins

no turning off your water supply

Brass Control Valve PressureGauges Why do you use soBrass Control Valve 1 4" x 1 4" Control valve brass chrome plated, needle valve with locking nut . Fine adjustments to flow and pressure can be made and maintained with excellent brass control valve. Dimensions and Weight Weight . 25 pounds Illustrations Diagrams Instructions How to use Push In Quick Connect fittings