Which fittings are recommended for cleaning and inspection of a water column?

Cleaning and inspecting a water column require fittings that can facilitate clear access and ensure appropriate flow dynamics. Crosses and tees are particularly favorable in this context because they allow for multiple branching points, making it easier to access different sections of the water column for maintenance purposes.

Using crosses enables connections to multiple pipes in a way that permits effective cleaning and inspection. Tees can provide lateral connections to the water column without disrupting the main flow, allowing for the insertion of cleaning tools or inspection cameras, as well as providing an opportunity to access the interior of the column without needing to dismantle the entire system.

Other types of fittings, such as elbows and bends, can change the direction of flow but may not provide the necessary access for cleaning and inspection. Reducers and joints, while useful for modifying pipe diameters, do not enhance the ability to inspect or clean the water column. Flanges and caps might allow for sealing connections but do not inherently facilitate access for cleaning and inspection in the same manner. Thus, the use of crosses and tees is ideal for ensuring effective and thorough maintenance of a water column.