This was the impeller that came w/ my new water pump I bought years ago (after rebuilding the previous one and having it leak again). I've rebuilt my new water pump a few years ago and w/ a clean HX no dripping. As others have mentioned making sure there is no build up on the seawater inlet side of the HX is key to lower pressure / dripping.
I believe this this impeller was just too old though it sounds like it can happen at any age. I'll say again - bad design. Seems like they should have some splined/keyed texture on the outside of the keyed core.
Back to my old trusty run dry blue globe impeller.
Time to find a good source for a spare (current spare is really old).
I believe this this impeller was just too old though it sounds like it can happen at any age. I'll say again - bad design. Seems like they should have some splined/keyed texture on the outside of the keyed core.
Back to my old trusty run dry blue globe impeller.
Time to find a good source for a spare (current spare is really old).