Carbonation & Line Cleaning Ball Lock Cap – Red Plastic

Carbonation & Line Cleaning Ball Lock Cap – Versatile PET Bottle Adapter

Charge, Clean, or Dispense Using a Standard Soda Bottle

This red plastic ball lock cap with 28mm PCO 1881 threads turns any 1- or 2-liter PET soda bottle into a portable draft tool. Whether you're carbonating a beverage, dispensing on the go, or cleaning your beer lines, this cap delivers practical functionality in a compact form. Compatible with both gas and liquid ball lock disconnects, it’s a must-have for travel setups, draft system maintenance, and FermZilla fermenter accessories.

Use with 3/16" or 1/4" ID tubing inserted into the barb to create a dip tube for serving, or to direct cleaning solution through your draft lines. The barb is also Duotight compatible, allowing you to easily connect EVABarrier 8 mm OD tubing using a Duotight fitting.

Common Uses:

• Portable Carbonation & Dispensing: Pre-charge a soda bottle with CO₂ and serve beer or soda using a liquid disconnect
• Line Cleaning: Fill the bottle with solution, attach the cap to your beverage line, and squeeze or pressurize to flush lines
• FermZilla Compatible: Use with FermZilla Collection Containers to purge oxygen or introduce dry hops under pressure
• Color Coding: Pair red caps with yellow versions to easily identify gas vs liquid connections

Specifications:

• Material: Food-grade plastic
• Thread Type: 28mm PCO 1881 (standard soda bottle threads)
• Ball Lock Type: Works with both gas and liquid ball lock disconnects
• Barb OD: 1/4"
• Barb ID: 3/16"
• Barb Length: 7/8"
• Overall Length: 2.5"

Need a stainless option? Check out the Stainless Steel Ball Lock Cap.