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Sanitary
Changeover Valve for water tank
4
hace 6 años
hace 6 años
Good evening dear
Please, can you give me a hand with this topic:
overflowing the ague tank. I changed the float and thought it was a resolved issue, but no, it still overflowed.
Reading a little I see that there is something called a non-return valve and it may have been damaged causing the water to return to the tank.
Because of this, I understand that I have to change it and there my problems begin and I ask for advice because I don't know where to start. I attached a picture of the tank and all the tubes
1 do I have to empty the water tank?
2 disassemble the entire section and reassemble with a new valve, replacing the cups and threads that are needed?
3 Can you put the double union anywhere?
4 recommend me to do or stop doing something?
5 do I have to use only teflon or something else?
Thank you very much from now to who can give me a hand, because I want to do the job but I lack technical knowledge.
Hug!!!
1.740
hace 6 años
hace 6 años
You should not empty the tank, just saw the stopcock, cut after the T that goes up to the float, there you put between PPN thread, you must disassemble the bobbin down and disassemble everything until the stopcock, then enter the tap once again T down the bobbin, there you can put your non-return valve, then using the materials you have you add a double union and you get back to the stopcock .... Solved, and use teflon if you want or sellarosca (you can add hemp, but with teflon it is enough.)
1.740
hace 6 años
Jsolsno in other places this is the type of connection that is used, network water is used up the tank through the same pipe that lowers the water of the tank, the check valve causes the tank not to fill below, it is a system like Reserve tank
4
hace 6 años
hello danny_rosario! thanks for replying! I abuse your trust !!
Let's see if I understood your solution well because I get dizzy with what Raul Edgardo advises me ...
It is very clear not to have to empty the tank and just close the stopcock. Then I decided to cut after the T that goes up to the float, that is the first between threads going from left to right, and reassemble by putting a tap first, then the water rise and then the non-return valve and the double union before the stopcock Is the order correct?
1.740
hace 6 años
Excuse me, after the T of ascent to the float, cut that nipple ... you will replace it with a thread, this is to gain space for when you need to put the double union .... if you will not go further outside and it would be the rise to the float is getting worse, I say by the inclination, then disassemble everything and put it on the floor as you take out, it is to put everything back as VAT.
1.740
hace 6 años
The non-return valve has to close in the direction of the tank, your problem is in the valve this bed and is filled with tartar and dirt, preventing the seal closing, it would have to be stopped, but you would have to change the entire installation.
31
hace 6 años
hace 6 años
The valve prevents the tank from loading where it should be unloaded.Its loading and unloading installation is wrong..and I also notice that the cleaning key is missing..probably dirt does not allow the valve to close at the moment of loading and the tank is load there .. the comment as a suggestion the colleague is correct what suggests you to change the loading and unloading installation .... luck.
4
hace 6 años
Thank you very much Dear for your comment and suggestion
I don't quite understand the issue of changing the installation ... is changing the order? surely the valve broke down because of the dirt in the tank .... I asked Danny Rosary to confirm if the order is wrong or I don't quite understand
31
hace 6 años
Surely it worked like that for a while ... these types of connections use a single pipe to load and unload ... if a water lift pump loads the tank or the same network pressure the load ... the valve, (non-return or retention ), at the moment that the tank is loaded, the valve closes by hydraulic action causing the water to pass through the float until it is full ... when the hydraulic pressure no longer increases, the water reserved in the water makes a hydraulic pressure. tank and thus the valve opens by pressure of the water fall by gravity and the tank unloads .. valve change solution
31
hace 6 años
Ok. Buy double union and twist and some thread sealant. The double union allows you to remove an installation and reattach it so you replace the broken valve ... if you blow in one direction it closes ... in the other it opens ... the part that closes you place it in the opposite direction to the tank discharge and the one that opens the column in the direction of the tank outlet
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