Controlliamo la valvola Presta e la camera d'aria.

Controlliamo is the present tense, first-person plural form of controllare.

So it means we check / we are checking / let's check, depending on context.

The ending -iamo is the normal ending for noi (we) in many Italian present-tense verbs:

• io controllo = I check
• tu controlli = you check
• lui/lei controlla = he/she checks
• noi controlliamo = we check
• voi controllate = you all check
• loro controllano = they check

In instructions or practical contexts, controlliamo can sometimes sound a bit like let’s check.

Italian often leaves out subject pronouns when they are not needed.

The verb form controlliamo already tells you the subject is noi (we), so Italian usually does not say noi unless it wants extra emphasis or contrast.

So:

• Controlliamo la valvola Presta... = normal, natural
• Noi controlliamo la valvola Presta... = more emphatic, like we are the ones checking it

This is very common in Italian.

Italian uses definite articles much more often than English does.

Here, both nouns are specific items being referred to, so Italian naturally says:

• la valvola Presta
• la camera d'aria

Also, when two singular nouns are joined by e (and), Italian usually repeats the article if each noun has its own article:

• la valvola Presta e la camera d'aria

That sounds more natural than trying to use one article for both.

Yes. Both nouns are feminine singular:

• la valvola = feminine singular
• la camera = feminine singular

That is why the article is la in both cases.

A useful thing to remember is that grammatical gender in Italian does not always match what an English speaker might expect, so it is best to learn each noun together with its article:

• la valvola
• la camera d'aria

D' is just di with elision.

When di comes before a word beginning with a vowel, Italian often drops the i and replaces it with an apostrophe:

• di aria → d'aria

So:

• camera d'aria = literally something like air chamber, the standard term for an inner tube

This kind of contraction is very common in Italian:

• l'amico from lo amico (historically)
• un'amica
• d'acqua
• d'estate

In this sentence, Presta identifies the type of valve. It is best understood as a name/type label attached to the noun valvola.

So valvola Presta means Presta valve.

Even though it comes after the noun in Italian, that is normal. Italian often places this kind of classifier or label after the noun:

• valvola Presta
• valvola Schrader

It is not a regular descriptive adjective like grande or nuova. It is more like a technical name or category.

It is capitalized because Presta is a proper name, used here as the name of a valve type.

In technical writing, brand names, surnames, and named systems/types are often capitalized. So:

• valvola Presta
• valvola Schrader

You may sometimes see variation in less formal writing, but capitalization is normal and safest here.

Not usually.

This is an important false-friend warning. In many contexts, controllare means:

• to check
• to inspect
• to examine
• to verify

English to control often corresponds instead to verbs like:

• controllare in the sense of to monitor/manage
• dominare
• regolare
• gestire

So you should not automatically assume controllare means English control every time. In a mechanical or practical sentence like this one, it usually means check or inspect.

The normal word for and is e.

Sometimes you may also see ed, especially before another word beginning with e to avoid an awkward sound:

• e Elena
• sometimes ed Elena

But in modern standard Italian, e is the default form, and ed is much more limited.

Since the next word here is la, there is no reason to use ed:

• la valvola Presta e la camera d'aria

This is normal Italian word order.

The basic structure is:

Verb + direct object + e + direct object

So:

• Controlliamo = verb
• la valvola Presta = first object
• e = and
• la camera d'aria = second object

Italian word order is often similar to English in simple statements, although Italian is sometimes more flexible. This sentence is straightforward and natural.

Then you would change the verb form.

For an informal command to one person (tu), you would say:

• Controlla la valvola Presta e la camera d'aria.

For a formal command to one person (Lei), you would say:

• Controlli la valvola Presta e la camera d'aria.

For a command to more than one person (voi), you would say:

• Controllate la valvola Presta e la camera d'aria.

So controlliamo is not the direct command to you; it is we check / let's check.