A U type keg coupler is a commonly used device in the UK for tapping kegs, particularly those containing Guinness and Harp beers. As an expert sommelier and brewer, I have had extensive experience with keg couplers and can provide a detailed explanation of what a U type keg coupler is and how it works.
1. Definition:
A U type keg coupler is a specific type of coupler that is designed to connect to the valve on a keg. It is called a “U” type coupler due to its distinctive U-shaped design. This coupler is specifically designed to work with kegs that contain Guinness and Harp beers, although it can also be used with other compatible kegs.
2. Function:
The primary function of a U type keg coupler is to tap into the keg and allow the beer to flow out. When attached to the keg, the coupler creates a secure connection with the keg's valve, ensuring a tight seal. This connection allows the beer to be dispensed from the keg when the tap handle is opened.
3. Components:
A U type keg coupler consists of several components that work together to tap the keg. These components include:
– Probe: The probe is a metal tube that extends into the keg and punctures the keg's valve when the coupler is attached. This allows the beer to flow out of the keg.
– Lever Handle: The lever handle is used to open and close the coupler. When the handle is in the closed position, the flow of beer is stopped. When the handle is lifted, the coupler is engaged, and the beer can flow out.
– Pressure Relief Valve: The pressure relief valve is a safety feature that allows excess pressure to escape from the keg. This prevents the keg from becoming over-pressurized and potentially causing damage.
– Gas Inlet: The gas inlet is where the CO2 or nitrogen gas is connected to the keg. This gas is used to create pressure within the keg, pushing the beer out when the coupler is opened.
4. Tapping Process:
To tap a keg using a U type coupler, the following steps are typically followed:
– Ensure the keg is properly chilled and connected to a CO2 or nitrogen gas source.
– Position the U type coupler over the keg's valve, aligning the probe with the valve opening.
– Push the coupler down firmly to puncture the keg's valve with the probe.
– Turn the lever handle to the open position, allowing the beer to flow out of the keg.
– Adjust the gas pressure to achieve the desired flow rate.
– When finished, close the lever handle to stop the flow of beer and disconnect the gas source.
A U type keg coupler is a specific type of coupler used to tap kegs, particularly those containing Guinness and Harp beers. It is designed with a U-shaped configuration and consists of various components that allow for a secure connection to the keg's valve and the dispensing of beer. By understanding the function and components of a U type keg coupler, one can effectively tap a keg and enjoy a refreshing pint of beer.