Valve Grades
WCA (0)
WCB (34)
WCC (15)
LCB (20)
LCC (16)
CF3 (19)
CF8 (20)
CF3M (18)
CF8M (23)
CF8C (1)
WC1 (0)
WC4 (0)
WC5 (1)
WC6 (23)
WC9 (22)
C5 (5)