Gas Stove Replacement: Main Valve Closed, No Gas Flow - Role of Pressure Regulator?

Hello

I am in the process of replacing the gas stove, disconnecting the old kitchen, I closed the main valve before the counter and after turning on the main valve, there is no gas passage, the day before I had a similar problem but I closed the valve, opened it, moved some regulator on the "reducer" (or whatever this is - photo) and it started to work and today, unfortunately, it fails. The gas installation is 15 years old, the meter is outside the house, the pipes are slightly rusty, but does this have any effect?

I made:
1. I closed the main valve
2. I turned on the gas in the stove to let out what is in the pipes
3. Unscrewed the cooker, screwed it on again
4. I opened the main valve, but there is no gas in the stove (at the outlet of the pipe)

There is some regulator (pressure regulator?) At the top of the reducer, maybe I should do something with it? Maybe you need to do something appropriate, such as priming the hydrophore pump, so that it draws water and draws water from the well?

Hello

1 Read what the reducer is for (Google)
2 Watch out for fire sources (cigarettes etc.)
3 Replace the seals, if present, at the connections to the reducer
4 Check the tightness of connections (in domestic conditions, water with detergent)
5 Check the pipes and paint them, because there is probably no rust inside. Check if they are all seamless if it is steel. The same applies to fittings.

Ideally, consider calling in someone who has an understanding of this :!:

Regards

Little edit. I don't know why I haven't seen the attachment. If nothing has changed, then everything in front of the meter belongs to the gasworks and report to them. Let them go through everything and list what is needed. it is terribly neglected. As much as asking for a good paint, because there is probably terrible dampness there.

The question is whether after closing the main valve and reopening it, the gas should "flow" in the pipes without any problems or whether something else should be done. As for me, a strange phenomenon that after closing the valve (probably ball) and re-opening it, there is a problem in the form of a lack of gas at the end of the kitchen.

There is a reducer at the gas meter, it has a built-in protection. After the pressure in the network drops, it blocks the gas flow, if you turn the gas off in front of the regulator, you have a 100% blockage. Look at the reducer somewhere has some windbreaker to unlock.

PS. I just saw the photo, you do not have a valve behind the meter, then look for unlocking on the reducer or call the gas workers, they know what to press-pull to get the gas to go (in my neighborhood they already had an action that after the gas pipeline was interrupted, they had to fly to each reducer and unblock it)

As it turned out, the reducer was damaged, I called the ambulance and they replaced it with a new one, thanks for the response from LOPR.

https://obrazki.elektroda.pl/71_1272573965.png