The B&G Tip Cap - Part 1325 TC-52 / TC-160 is actually for the Ban-Drip valve only on Sprayer N64-CC and N114-CC, rather than the extenda-ban valve sprayers. The TC-52 holds the tip assembly onto the extension wand. You can view exploded views and part listings for these assemblies in the sprayer guide here. All B&G Sprayer parts are replaceable.