Watts (BB-NUT) Big Bubba BBH Nut; Black Clack (GREENSAND-PLUS) GREENSAND PLUS for Iron featuring a corrosion-resistant steel shell

featuring a corrosion-resistant steel shell and butyl diaphragm for reliable water storage

Dual Scale Display

and any application requiring ultra-pure water with neutral pH

Direct panel installation configuration for visible flow monitoring on system fronts or control panels

Watts (BB-NUT) Big Bubba BBH Nut; Black Clack (GREENSAND-PLUS) GREENSAND PLUS for Iron featuring a corrosion-resistant steel shellThe Watts BB NUT (BBH Nut) is a genuine replacement cap nut designed specifically for Big Bubba whole house filter housings, ensuring a secure seal and proper system operation. This black threaded nut (part #21 in the Big Bubba assembly diagram) provides reliable housing closure for 10 inch and 20 inch Big Bubba systems. TECHNICAL DETAILS Replacement Cap Nut Specifications Manufacturer Watts Model Number BB NUT (BBH Nut) Color Black Component Type Cap