Keg taps, couplers, faucets, a beer line and the small parts a draft system stops working without. A FOB detector alone pays for itself: it shuts the line when the keg blows, so the next pint is not three quarters foam poured down a drain.
The brewery decides that, not the hardware — Sanke S and A cover most European kegs and D is the US standard; tell us what you pour and we'll match the keg tap to it.
A fob detector shuts the line the moment a keg blows, so the run stays full of beer instead of foam — on a long draw that saves the next several pints at every keg change.
A party pump is fine for a single evening, since it pushes air into the keg and flattens the beer within a day or two; anything longer runs on CO2 or a beer-gas mix.
Yes, for nitrogenated stouts — the restrictor plate breaks the pour into the tight creamy head those beers are brewed for, which a plain brass or flow control faucet won't give you.
A sankey keg coupler to match the keg, a beer shank and faucet through the counter, beer tubing between them, a CO2 regulator beer systems dispense on, and a beer drip tray underneath. A draft beer kit or beer tap kit bundles those for a single tap; a kegerator conversion kit does the same for a fridge you already own.
A beer line cleaning kit every two weeks, no exceptions — line cleaning is what stands between a good keg and a sour pint. A drip tray with rinser keeps glassware from carrying detergent into the head.
A stout faucet with a restrictor plate and a nitrogen regulator beer gas line pours the cascade; a beer gas regulator handles mixed gas for standard lines. A growler filler and a counter pressure bottle filler cover takeaway, a party pump keg tap covers events, and the rest of the keg accessories — washers, spanners, spare tap handles — are on the same shelf. A beer tap handle is also the cheapest branding a bar owns.