Cask Aspirator Breather Spile

The Essential Link Between Aspirator and Cask

The RLBS Olympus Cask Aspirator Breather Spile has been designed to connect a cask aspirator system to a traditional horizontal cask.

Installed through the shive after venting has been completed, it provides a controlled connection between the aspirator and the cask while helping protect the dispense system through the use of an integrated non-return valve.

For brewers using aspirators to help extend the serving life of cask-conditioned beer, the breather spile forms an important part of the overall dispense system.

What Does a Breather Spile Do?

Once a cask has been vented and prepared for service, a breather spile can be installed in the shive to allow a cask aspirator to perform its role.

As beer is removed from the cask, the aspirator introduces low-pressure CO₂ to replace the displaced volume above the beer. The breather spile provides the connection point that makes this possible.

Its integrated non-return valve helps protect the aspirator system from unwanted backflow while supporting reliable operation.

Why Use a Cask Aspirator System?

In a busy pub, a cask may be sold within a few days.

Homebrewers often take much longer to finish a cask, particularly when serving from a home bar or club setup.

Aspirator systems help reduce oxidation by replacing displaced air with low-pressure CO₂, allowing cask-conditioned beer to remain in better condition for longer.

The breather spile is a key component that enables this process

Key Features

• Designed for aspirator systems
• Suitable for horizontal casks
• Integrated non-return valve
• Helps protect dispense equipment
• Easy to clean and maintain
• Durable engineering-grade construction
• Suitable for home and commercial use
• Essential aspirator accessory

Suitable For

• Home bars
• Real ale enthusiasts
• Homebrew clubs
• Beer festivals
• Traditional cask dispense systems
• Handpull installations

Designed for Traditional Cask Ale Systems

The Olympus Breather Spile is intended for use as part of a complete cask dispense system and works alongside:

• Cask Aspirators
• Beer Engines
• Handpulls
• Cask Shives
• Casks and Firkins
• Traditional Real Ale Dispense Equipment

Together these components help maintain beer quality while making cask ale more practical to serve over extended periods.

Frequently Asked Questions

What is a breather spile?

A breather spile provides the connection point between a cask aspirator and the cask itself.

Do I need this with a cask aspirator?

If you are operating a traditional horizontal cask with an aspirator system, a breather spile provides the interface between the aspirator and the cask.

What does the non-return valve do?

The integrated valve helps prevent unwanted reverse flow and protects the aspirator system.

Can this be used with homebrew casks?

Yes. It is suitable for both homebrew and commercial cask dispense systems.

Does this replace a soft or hard spile?

No. It forms part of the aspirator system and serves a different purpose within the dispense setup.