Pentair rhymes with:
santerre, altair, astaire, santerre, solitaire, stair, stare, stehr, sterr, tear, voltaire, westair
Pentair sounds like:
painter, pander, pandora, panter, panther, pantry, papandrea, papandreou, paynter, pender, pendry, pinder, pintar, pinter, pointer, pomodoro, ponder, pounder, poynter, punditry, punter