check valve

11 LETTERS · STARTS WITH C

check valve is a valid 11-letter word worth 27 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3H4E1C3K5V4A1L1V4E1

3 + 4 + 1 + 3 + 5 + 0 + 4 + 1 + 1 + 4 + 1 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does check valve mean?