First Octave F: 1st valve
G: 2nd Valve
A: 1st valve
Bb: 2nd Valve
C: 1st and 2nd valves
D: 1st, 2nd and 3rd valves
Second Octave F: No Valves
Gb: 2nd valve
G: 1st valve
A: 2nd valve
Bb: 1st and 2nd valves
C: 1st, 2nd and 3rd valves