If a suction pipe is connected through the sump cover, what should it have?

A suction pipe connected through the sump cover should have a flexible coupling to accommodate any movement between the sump and the connected piping. This flexibility is crucial because it allows for thermal expansion, vibration, and other movements that may occur in the system without causing stress or damage to the connections.

Using a flexible coupling can help manage misalignments and is especially important in systems where the piping may not be perfectly aligned due to settling or shifts in the building. Such couplings can absorb movement and prevent cracking, leaks, or disconnections, ensuring a reliable and long-lasting system.

While solid or rigid connections might provide a strong bond, they lack the necessary flexibility to withstand the operational stresses often encountered in piping systems. Simple clips would not provide the adequate support or flexibility needed for effective performance in this scenario.