Abstract: A modular center set faucet or bar spout in which the faucet trim or bar spout trim may be removed from or reinstalled from above the sink deck without affecting the waterway connections beneath the sink deck. Each faucet or bar spout assembly includes a valve body with a trim set. The valve body includes a pair of elongated tubular conduits spaced from each other to extend through the passages in the sink deck. A cartridge chamber is formed in each of the elongated tubular conduit with a cross conduit connecting the tubular conduits. A water outlet nipple leads from the cross conduit. The water outlet nipple has a slide-on fitting located above the sink deck when the pair of elongated tubular conduits are positioned to extend through the passages. The trim set may include a waterway and an escutcheon with the waterway positioned in the escutcheon.