Quamar Doser Star Adjustment Nut musica-parts/musica-boiler so this is a dedicated

so this is a dedicated cold line connection

Square shape

and Wega equipment

mark the orientation of the old exchanger as you remove it so the new one goes back in facing the same way

Quamar Doser Star Adjustment Nut musica-parts/musica-boiler so this is a dedicatedQuamar Doser Star Adjustment Nut Plastic, threaded, cogged adjustment nut used to fine tune doser star tension on several older Quamar doser models. A cheap, easy fix when doser lever action feels loose or inconsistent. COMPATIBILITY Fits: Quamar M80, M80 OLD, Q13 CONI, Q13 75, T48, T80 doser models INSTALLATION Threads directly onto the doser star shaft, a simple DIY replacement.