These are the Brass foot valves we use and recommend for 2 inch water suction line.
Weighted and with a spring valve these non return Brass foot Valves / Logi valves are the ideal strainer to have at the end of your water intake line.
using these weighted foot valves you are able to surge the intake line creating a pulse with the valve that draws water into your pump to prime and maintain prime after shutdown.
These have a female thread ready to receive any mail fitting required.