Procedure for Removing Radiator with Underneath Connection: Valve Operation and Bleeding

Good morning,
Nowhere can I find such a heater and instructions on how to remove it, so I am sorry if it was already somewhere.
I would like to make sure that to remove the radiator with the connection as in the picture, all I need to do is turn the two flat screws and I can easily unscrew the nuts above?
Are these screws valves? Do I have to turn the water off somewhere else?
Is it enough to unscrew these screws and bleed the radiator after reinstalling them? (apartment in a block of flats, new)



Thank you for your help.

Buddy, this is a double bottom radiator radiator connection. Just treat these screws with a flat screwdriver.

https://sklep.jarbud.opole.pl/pl/p/Zawor-grzejnikowy-dolny-katowy-HONEYWELL/166

These pins for a flat screwdriver are shut off valves. Set them horizontally, which cuts the radiator away from the installation. At the other end, put a bowl under the cork at the bottom of the radiator, cover the wall. Slowly unscrew the cap until it is unscrewed, water will start flowing out. Unscrew the breather in the upper plug (key for 3 bad not a screwdriver!). After the water flows out, close the cap at the bottom, screw the vent on top. put a rag under the valves at the bottom, unscrew both nipples (they are at the valves so when viewed from above according to the directions) something else will flow onto the rag (and this is a slush with low oxidized iron so black and dirty). Lift this side of the radiator up so as not to splash the apartment. Make yours. Put on the heater logical rest.
Greetings

Everything as described by a colleague @ Szczecin62 only the vent should be unscrewed first to check if the valves are holding

Fresh up the matter.
I removed the radiator in the kitchen with such a connection. After the renovation was completed, I put the rest on, opened the installations, vented the radiators and none of them heat up. The question is whether I have plugged the connector after the liquidated socket in the correct way. Namely, I put plugs on the cold water supply and drainage. Or maybe I should connect them with a tube or a suitable fitting ?? Maybe the circuit is not closed?
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Moderated By Topolski Mirosław:

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It all depends what the installation is. If so, it means that they are "serial" (the heating medium must have flowed through the removed radiator), but such installations are rare. A more precise answer could be seen from the photo or diagram (drawing) of this installation (how the radiators were connected to each other).

Everything is fine and warm. There is a temperature sensor on the substation that opens the valve with hot water. If it is warm during the day, it is impossible for the radiators to warm up. It was cool in the evening and the heating went on.