Another RV wives tale de-bunked. "You'll burn out your water pump if you run it dry". You guessed it, nitwit me, left the CG this AM, drained the fresh tank and the water heater, dumped holding tan...
Yeah, hydrostatic pumps have no trouble running dry. I left mine running dry twice over the last 14 years. When I traded in our trailer I kept that pump and put the stock one back in. The old pump works so well that after the warranty expires on our new TT, I will install it in the new rig.