A full refresh of the injection side of your Dosatron D9. This kit replaces both O'rings, the plunger seal, the suction valve and the injection stem, so the entire chemical-draw path is renewed in one service.
Why it matters:
Renews the complete injection path
Replaces both O'rings and the suction valve
Corrects inconsistent or weak chemical draw
Bell-Booth tip:
Choose this over the Basic Service Kit when dosing problems point to the injection side: weak draw, inconsistent concentration, or visible wear on the stem and seals.
