The Cim 733/788NC, 3/4-inch & 20mm Monolink System with 4-Way Valve is a fluid control system typically used in HVAC, fluid handling, or industrial piping applications. The Monolink system refers to an integrated design that combines multiple components into a single unit, simplifying installation, maintenance, and performance optimization. https://industrywaala.com/product/cim-733-788nc-3-4-inch-20-mm-monolink-system-with-4-way-valve-quantity-1-pcs/