Yes, DAMPERS is a Scrabble word!

Letter values in Scrabble US: D 2, A 1, M 3, P 3, E 1, R 1, S 1.

Is it a valid word?

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

a movable iron plate that regulates the draft in a stove or chimney or furnace
a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations
a depressing restraint