Keeping your kegs in top shape is the best way to ensure your beer stays fresh and your draft system remains leak-free. This guide covers everything from the essential "First Aid Kit" to a step-by-step deep clean using MoreBeer! essentials.
1. The Essential: Ball Lock Keg First Aid Kit
Every kegger should have the KOMOS® Ball Lock Keg First Aid Kit (MoreBeer SKU: D2541) on hand. It’s a complete "tackle box" of every seal and small part that can fail on a brew day.
What’s Inside:
Posts: (1) Gas In and (1) Bev Out post.
Lid Seals: (2) Lid O-rings and (2) PRV pull rings.
Internal Parts: (6) Universal poppets and (10) Dip tube O-rings.
Draft Side: (20) Post O-rings, (4) Tailpiece gaskets, and (2) Nylon CO2 regulator washers.
2. Replacement Gasket Reference Chart
When a leak occurs, you usually only need one specific part. Use this chart to find the exact MoreBeer! replacement.
| Part Description | Purpose | MoreBeer SKU |
| Lid O-Ring (Standard) | Main seal for the keg hatch | KEG510B |
| Lid O-Ring (Low2) | Superior oxygen barrier (synthetic) | KEG512 |
| Post O-Ring | External seal on Gas/Liquid posts | KEG430 |
| Dip Tube Gasket | Internal seal under the dip tube flange | KEG440 |
| Universal Poppet | Internal spring valve for posts | KEG450 |
| CIP Film Keg Lube | Food-grade lube to prevent O-ring cracking | CL50 |
3. Step-by-Step: Deep Cleaning Your Keg
We recommend a deep clean every 2–3 uses, or any time a keg is kicked.
Step 1: Depressurize and Disassemble
Vent: Pull the Pressure Relief Valve (PRV) on the lid until all gas is gone.
Remove Hardware: Use a 7/8" Deep Socket (or 11/16" depending on your post type) to remove the Gas and Liquid posts. Pull out the long and short dip tubes.
Organize: Keep the Gas and Liquid parts in separate bowls to avoid confusion during reassembly.
Step 2: The PBW Soak
Mix Powdered Brewery Wash (PBW) or Craft Meister Alkaline Wash with warm water inside the keg.
Place all small parts (posts, poppets, O-rings, lid) inside the keg and let soak for at least 4 hours (overnight is best).
Use a Beer Line Cleaning Brush (MoreBeer SKU: CE45) to scrub the inside of the long liquid dip tube.
Step 3: Rinse and Inspect
Rinse everything three times with hot water. Any leftover cleaner residue will kill the head retention (foam) on your beer.
Inspect O-rings for flat spots or cracks. Replace any that look worn.
4. Sanitizing and Reassembly
Sanitize: Mix 1 oz of Star San per 5 gallons of water. Dip all small parts in the solution for 60 seconds.
Lube: Apply a thin film of CIP Film (Keg Lube) to the lid O-ring and the post O-rings. This ensures a gas-tight seal and extends the life of the rubber.
Reassemble: Reinstall the dip tubes and posts.
Note: The gas-in post usually has small notches at the base; the liquid-out post is smooth.
Purge: Once the keg is sealed, hook up your CO2 and "blast" the keg with 10–20 PSI. Pull the PRV a few times to purge out any oxygen, leaving only a CO2 "blanket" inside until you're ready to fill.
Keg Maintenance Master Chart
| Frequency | Task | Focus Area | Why? |
| Every "Kick" | Hot Rinse & PBW Flush | Interior & Lines | Removes yeast/trub before it hardens into "beer stone." |
| Every "Kick" | Sanitize & Pressurize | Entire Keg | Keeps the keg shelf-ready and prevents oxygen ingress. |
| Every 3 Months | Full Teardown | Posts & Poppets | Hidden buildup inside poppet springs can cause "off" flavors. |
| Every 3 Months | Re-Lube Seals | Lid & Post O-Rings | CIP Film keeps rubber supple and prevents tiny gas leaks. |
| Annually | "First Aid" Swap | All Gaskets | Rubber degrades over time; preemptive replacement saves your CO2 tank. |
| Annually | PRV Testing | Pressure Relief Valve | Ensures the safety valve triggers correctly and seals tight. |