twin valve

10 LETTERS · STARTS WITH T

twin valve is a valid 10-letter word worth 18 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1W4I1N1V4A1L1V4E1

1 + 4 + 1 + 1 + 0 + 4 + 1 + 1 + 4 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does twin valve mean?