Valves for the trumpet were developed around the year 1800.
I don't completely understand what you mean by that. As in an average trumpet, the valves literally face upwards. In terms of how to put them in the trumpet, such as after oiling them, it is different for every trumpet. Often, the valves will have small numbers engraved on them, in which case the numbers almost always face front, or towards the direction of the mouthpiece. If they don't have numbers, they will often have some sort of notch that fits into the valve casings on the trumpet.
A standard trumpet(not a piccolo)usually has three valves. However, the higher-pitched piccolo trumpet has four.
Trumpet valves Motorized pumping valves are two sets of valves.
The buttons on a trumpet are called valves.
They are called valves on a trumpet.
It's not recommended. Mineral oil is a bit too thick to be used on trumpet valves.
A trumpet uses valves and is pitched higher than a trombone. The trombone uses a slide instead of valves, and is pitched between the trumpet and the tuba.
There are several types of trumpet; the most common is a transposing instrument pitched in B♭ with a tubing length of about 148 cm. Earlier trumpets did not have valves, but modern instruments generally have either three piston valves or, more rarely, three rotary valves. Each valve increases the length of tubing when engaged, thereby lowering the pitch. The trumpet is used in many forms of music, including classical music and jazz.
Valves
Trumpet.
The Trumpet is a brass instrument. Has three keys called VALVES.