Viega MANABLOC® A unique system designed for dramatic water and energy savings.
Viega MANABLOC® Parallel Water Distribution System MINIBLOC® MANABLOC Port Connections Bronze PEX Press Brass PEX Crimp PolyAlloy PEX Crimp PEX Compression Viega was the first in the industry to develop a parallel water distribution system known as the MANABLOC. Why 3/8" Tubing? A MANABLOC system uses a home-run concept with dedicated lines to each fixture in a home with the following benefits: • 3/8" or 1/2" PEX lines available to supply required fixture demands, ensuring optimal efficiency.