Merry Christmas all!
I'm replacing some of the engine room pumps, and I'm wondering if I need a backflow preventer?
I've installed a Marco gear pump (UP3/E) for the fresh water system. It doesn't run unless a faucet is opened so it doesn't seem to need one. (By the way, this is a noisy pump, you don't need a red light on the panel to know it's running).
I also have installed a March AC-5C-MD pump to replace the airconditioning pump. What's the reason Amel put a backflow preventer on the orginal centrifugal pump? Would backflow damage a centrifugal pump?
By the way, this pump has a lot of openings around the rotor so I'm making a cover for it for when there is anything wet happening in the engine room. They make a sealed version of this pump but it's twice the cost.