To prevent the drain from becoming blocked with sewer water, a tundish is fitted with an air gap to ensure that the water from the shower is draining fully. Some other water appliances that require water to drain may need a tundish for the same reason, such as dishwashers, washing machines and even sinks.

What is the point of a tundish?

What does a tundish do? A tundish is installed to prevent cross-contamination between an overflow pipe and a drain pipe. Unsanitary water from the drain pipe could theoretically enter the system if a tundish is not installed to block this.

What is a tundish air conditioning?

A tundish helps to stop cross-contamination between an overflow and a drain pipe. A tundish also serves as an air gap and provides an inspection window to check for water leaks. ... This inwall tundish is easy and economical to set up for air conditioning discharges.