Best value Underbench UV system GW GAUV-2S/2A chamber2 x 10AH1/4 housings1 x 10PF201x 10PX01Platinum Tap (PLATS)SV-5 (Plumbers delight valve)1/4" tubing (1 metre) The Greenway UV components in this system are tested and certified by NSF International against NSF/ANSI 55 for disinfection pe..