valve generator

15 LETTERS · STARTS WITH V

valve generator is a valid 15-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4A1L1V4E1G2E1N1E1R1A1T1O1R1

4 + 1 + 1 + 4 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does valve generator mean?