A spit valve.
yup. If you mean the water key, yes.
the key word is WATER
He played a B-flat trumpet
Dizzy played a Bb (B flat) trumpet.
a B flat trumpet will tune to an A by playing a B. A C trumpet will tune to an A by playing an A.
As a general rule, when a part indicates "Trumpet" it is for the b-flat trumpet, so there is no difference. Depending on where you play, you may sometimes see a part for "trumpet in C" or some other key, but unless you play in a symphonic orchestra, that isn't all that common.
You can use any instrument to play jazz but the "Jazz" trumpet (A trumpet with Valves) in the key of Bb is the best.
If the bugle is in the normal key of B-flat, then the notes played by the bugle correspond to the open notes of the trumpet - no valves pressed down at all. If the bugle is in a different key than the trumpet, you will need to transpose the bugle notes into the key of the trumpet to find which notes to play on the trumpet. After you have done the transposition, it should be the case that the same valve combination can be used for all the bugle notes in that key.
A Bb and a C trumpet are two different instruments, A Bb trumpet is set in the key of Bb while the C trumpet is set in the key of C (or concert) so seeing as they are two different instruments i would say they are equally as good.
Safe and Sound is in the concert key of C (or no flats or sharps). On a B flat trumpet, that would be the key of D (or 2 sharps).
the key inlay
A concert F on a trumpet is the G note. Since a trumpet is pitched in Bb, trumpet players will always play one note above the concert pitch. Along with that trumpet players will always play in a different key from the concert pitch. Trumpet players will add two sharps to the concert pitch. i.e. If the concert pitch is Eb, 3 flats, then trumpet players will play in the key of F, 1 flat. trumpetman52