Cleaning beer taps and nozzles between line cleans
A full line clean every two weeks keeps the tubing clean. The faucet and nozzle need more than that. They sit open to warm air, hold a film of beer after every pour and in Indian humidity grow yeast, bacteria and mould fast. Here is the daily and weekly routine that keeps them clean between line cleans.
Why taps get dirty faster than lines
Inside a cooled beer line, beer sits cold and sealed from air. At the faucet it does not. After the last pour, a little beer stays in the spout and, on rear sealing faucets, in the body. It dries into a sticky film. Warm air and moisture let yeast and bacteria grow in it overnight.
The first pour next day carries some of that into the glass. The result ranges from a faint stale note to a sour or musty edge. Fruit flies find a dirty spout within hours in a warm bar. Our guide to choosing taps and faucets explains why forward sealing faucets leave less behind.
Every night: nozzles off, taps plugged
- Remove each nozzle or spout extension at close.
- Put them in a container of warm water, or a cleaning solution recommended by your chemical supplier, to soak overnight.
- Brush out the faucet spout with a small tap brush.
- Fit a clean faucet plug or cap, or push a clean brush into the spout, so insects and air stay out.
- Wipe handles, rinse drip trays and wash the drain.
In the morning, rinse the nozzles in clean water and refit them. This takes five minutes for a bank of ten taps and prevents most first pour problems.
Every week: strip the faucets
Once a week, take the faucets apart. Most standard faucets come off the shank with a wrench and split into body, lever, shaft, seals and coupling washer.
- Soak all parts in the line cleaning solution at the strength your supplier specifies.
- Brush every part, especially the inside of the body and the seal surfaces.
- Rinse thoroughly with clean water.
- Check seals and washers. Replace any that are cracked, flat or hard.
- Look inside the shank too. Dried beer often collects where the shank meets the faucet.
- Reassemble and refit, then pour a little beer to waste to flush out rinse water.
Keep a spare set of faucets so one set can soak while the other is in service. On a busy bar, this is the only practical way to do it weekly.
Stout faucets need extra care. The restrictor plate inside the nozzle has tiny holes that block easily with dried beer and yeast. Remove the plate every night with the nozzle, soak it and check each hole is clear by holding it up to the light. A partly blocked plate gives a slow, uneven pour with large, loose bubbles instead of a tight creamy head.
Work safely with line cleaner
Most line cleaners are caustic. They burn skin and can blind. Wear chemical resistant gloves and eye protection when mixing and handling them. Never mix two different cleaning products. Some combinations release dangerous gas.
Rinse until the water coming off the parts is neutral. A strip of pH paper costs very little and confirms it. Residual cleaner in a faucet gives the next beer a soapy, harsh taste and is a hazard to customers.
What dirty taps look and taste like
- Black or dark specks inside the spout: mould.
- Sticky handles and stiff levers: dried beer in the faucet body.
- A sour smell at the spout first thing in the morning.
- A first pour with a buttery, sour or musty edge that fades after the second.
- Fruit flies around the font.
Any of these means the nightly routine has slipped. Our guide to why the first pint of the day can taste off explains the link.
Do not stretch the full line clean
Clean taps do not replace a full line clean. Lines still need a full chemical clean about every two weeks, recirculated through the whole system, with a periodic acid clean to remove beer stone as your chemical supplier advises. Our guide to draught line cleaning covers the full routine.
Think of it as two layers. The line clean deals with the inside of the tubing. The tap routine deals with the parts open to air. Skip either and the beer suffers.
Write both on the same log. A line clean date without a tap routine beside it tells you only half the story when a customer sends a beer back.
Make it someone's job
The routine fails when it belongs to everyone. A closing bartender at 1 am after a long Saturday will skip a job nobody checks. Name one person on each closing shift to own the nozzle soak and tap plugs. Name one person each week to strip the faucets. Add both to the daily log sheet.
Then taste. A trained palate behind the bar notices a slipped routine days before a customer complains.
Your first step: buy a tub for nozzles, a tap brush and a set of faucet plugs today. Tonight, soak every nozzle and plug every tap at close.
Common questions
How often should beer taps be cleaned?
Nozzles should be soaked nightly and faucets stripped and cleaned weekly, with a full line clean about every two weeks.
Can I clean beer nozzles in a dishwasher?
Some can go through a glass washer, but an overnight soak and brushing reaches inside them better. Check the maker's advice.
What are black specks in a beer tap?
Usually mould growing in dried beer inside the spout. Strip, soak and brush the faucet, then keep it plugged overnight.
