The HF Series is a proprietary, rugged, 2” lead-free brass control valve that assures years of trouble free service. Multiple units are frequently plumbed together to provide high flow rates with little pressure drop. These systems communicate with each other and have the ability to monitor water usage and flow rates. They are fully programmable and you have the option of sequential regeneration; alternating stand-by; immediate our delayed meter initiation; even progressive flow. Multiple unit systems provide a constant source of soft filtered water.