Запорный кран находится под раковиной.

Not quite. Запорный кран usually means a shut-off valve or stop valve—the thing that controls the water supply and can be turned off.

• кран can mean tap, faucet, or valve, depending on context.
• запорный means something like shut-off or closing.

So in this sentence, it is probably the shut-off valve under the sink, not the faucet above it.

Because after под meaning under in a location sense, Russian uses the instrumental case.

Here the phrase means under the sink = location, not motion.

• dictionary form: раковина
• instrumental singular: раковиной

So:

• под раковиной = under the sink (location)
• под раковину = to under the sink / beneath the sink (motion toward that place)

This is a very common pattern with some prepositions in Russian.

No. Под can take two different cases, depending on meaning:

• Instrumental for location:
  под раковиной = under the sink
• Accusative for motion toward a place:
  положить под раковину = to put [something] under the sink

So the case tells you whether something is located somewhere or moves there.

Находится means is located, is situated, or is found.

So:

• Запорный кран находится под раковиной.
  = The shut-off valve is located under the sink.

Russian often does not use a present-tense word for is in simple statements. In many cases, you can just say:

• Запорный кран под раковиной.

That would also be understandable and natural.

Using находится makes it a bit more explicit or formal: is located rather than simply is.

Because it is the verb находиться, which is a reflexive verb.

• infinitive: находиться
• 3rd person singular: находится

In this sentence, запорный кран is singular, so the verb is also singular:

• кран находится = the valve is located

You do not need to translate the reflexive ending literally here. It is just part of the normal Russian verb form.

Because it agrees with кран, which is:

• masculine
• singular
• nominative

Russian adjectives must agree with the nouns they describe.

So:

• запорный = masculine singular nominative
• кран = masculine singular nominative

If the noun changed, the adjective would change too:

• запорного крана = genitive
• запорным краном = instrumental

Agreement is one of the key things to watch in Russian.

In its basic form, кран ends in a consonant, which usually means it is masculine in Russian.

So:

• кран = masculine noun
• therefore: запорный кран
• and the verb is singular: находится

This is one of the most common gender patterns in Russian.

Yes. Very often Russians would simply say:

• Запорный кран под раковиной.

That is a normal sentence in Russian and means essentially the same thing.

The version with находится sounds a little more like:

• is located
• is situated

So the sentence with находится may feel slightly more formal, explanatory, or precise.

Yes, Russian word order is more flexible than English word order.

The neutral order here is:

• Запорный кран находится под раковиной.

But you could also hear:

• Под раковиной находится запорный кран.

That version puts more emphasis on the location: Under the sink, there is a shut-off valve.

So the basic meaning stays the same, but the emphasis can change.

Usually yes, but context matters.

Раковина means sink or basin. In everyday household contexts, it is the normal word.

Depending on the situation, you may also hear related words such as:

• мойка = often kitchen sink or washing area
• умывальник = washbasin / sink in some contexts

But под раковиной is a very standard and natural phrase.

A rough pronunciation guide is:

za-POR-nyy KRAN na-HO-dit-sya pot ra-KO-vi-noy

A few helpful points:

• запорный → stress on -пор-
• кран → one syllable, like krahn
• находится → stress on хо
• под sounds like pot because final д is devoiced
• раковиной → stress on ко

If you want to sound natural, try not to stress every word equally. The main stress in the sentence often falls on кран and раковиной depending on context.

Both can mean under the sink, but the nuance can differ a little.

• раковина = sink/basin itself
• мойка = often used especially for a kitchen sink or sink unit

So in real life, both phrases may be used depending on the speaker and the exact type of sink.

For a learner, под раковиной is perfectly correct and very useful.

One natural way would be:

Запорный кран находится под раковиной на кухне.

Here:

• под раковиной = under the sink
• на кухне = in the kitchen

Notice that на кухне is in the prepositional case after на for location.

This is a good example of how Russian stacks location phrases together.