In the bathhouse section of his country house, he laid a corrugated stainless steel pipe, the moment comes to prepare for pouring the screed. The first step is to pressurize it. That is, build up the pressure in the pipes, twice the working pressure.
This procedure is done to find out the tightness of the pipe before pouring the concrete screed.
Typically, the pressure build-up procedure is performed by a hand operated pressure tester using water. But since I will have an antifreeze liquid (polypropylene glycol) as a coolant, it is desirable to inject it with it. This liquid is not cheap, it costs money, and I don’t have them to buy an anti-freeze so far, I will pressurize it with air.
By the way, the method described below is also suitable for determining the tightness of systems already filled with water. How I did it, I will clearly show it in the gallery, friends, please scroll through the description:
We install our homemade product in its place, we connect the pipes that will be under the screed.
The pressure is generated by a conventional car compressor connected to a battery.
A pressure of 4 bar is enough, because the operating pressure is less than 2 atmospheres. We leave the system for a day, after having smeared the joints in the fittings with soapy solutions, if there are bubbles, then repack the connections.
The next day, having previously installed the beacons, you can start pouring the solution, looking at the pressure gauge. So that in case of depressurization, to know in advance about the problem. I liked working with corrugated stainless pipe in order to avoid questions in the comments. "Where did you get it and how much does it cost"I will leave a link for those interestedhere