Fleck (60090-HF) Piston Assy, 2750-2900 Upper Sennotech (B&A TDS-3/8) Before & After Meter Digital TDS Monitor; 3/8 Comp Note that this O-ring is

Note that this O-ring is not designed for Pentek Big Clear housings

and any water equipment requiring scale and corrosion protection

and copper are present

RO Pre-filtration Color Calypso Blue

Fleck (60090-HF) Piston Assy, 2750-2900 Upper Sennotech (B&A TDS-3/8) Before & After Meter Digital TDS Monitor; 3/8 Comp Note that this O-ring isFleck Control Valve Component Fleck 60090 HF Upper Piston Assembly OEM replacement piston for 2750 and 2900 series control valves. Restores proper cycle function and eliminates leak points in aging softener systems. OEM Part 2750 2900 Series WHY IT WORKS Precision engineering for reliable valve operation OEM Quality Construction Genuine Fleck part manufactured to exact specifications. Ensures proper fit and function in 2750 and 2900 control valves