Yes, PLATANS is a Scrabble word!

Letter values in Scrabble US: P 3, L 1, A 1, T 1, A 1, N 1, S 1.

Is it a valid word?

PLATANS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits

Also: plane tree.