Aquasystem VAV60 Hydropress tank 60 l

A quality hydropress from AQUASYSTEM that has a food-grade membrane that separates water and air inside the container. The membrane is easily replaceable which is very good

Model 60 ltr

Diam. 365 mm

Height 808 mm

Weight 12,0 kg

Max temp. 100 `c

Max. pressure 10 bar

Test pressure 15 bar

Connection 1″

Installation
It is imperative that the system is flushed to remove any contaminants that may damage the diaphragm before the vessel is put into service.
If a vessel is to be replaced in an existing system, it is important to start by disconnecting the power at the pump control panel and closing the shut-off valve or draining the system.

Check the pre-pressure of the vessel using a suitable air pressure tester; the pressure should be 0.5 bar below the cut-in pressure. The system pressure is read on the pressure gauge, which should be mounted as close as possible to the vessel.

Use a complete valve kit (ordered separately) that also includes a safety valve. The opening pressure of the safety valve must be no more than the working pressure of the vessel or lower, if the system pressure is lower.

Before putting the vessel into operation, perform the following:
Check that the vessel is correctly installed.
Start the pump and fill the vessel until the pressure switch automatically turns off the pump.
Open and close the tap furthest away from the vessel repeatedly to remove the air in the pipes.
Open one or more taps to empty the vessel.
If there is a pause between starting the pump and emptying the vessel, it is necessary to increase the working pressure of the pressure switch or reduce the pre-pressure in the Hydropress.
When the above points are completed, the system is ready to be put into operation.

Replacing the diaphragm
Disconnect the power at the pump control panel and drain the water from the system. Remove the vessel from the system and bleed using the pre-pressure valve. Unscrew the screws and remove the counterflange.
Unscrew the nut, which is on the other side of the tank and holds the
membrane.
Remove the old membrane from the membrane holder.
Insert the holder into the new membrane and insert the whole assembly into the tank through the flange hole, push the membrane holder out through the grommet on the top of the vessel and attach the membrane neck to the flange.
Reassemble the counterflange using the screws. Screw back the nut on the other side of the tank. Fill with air to 1.5 bar.

Function
A hydropress works on the same principle as a hydrophore, i.e. a pressurized water tank that serves as a store of pressurized water to which a pump is connected.
In this way, a pressure is created in the water pipes which will vary between the set pressure for the on and off switching of the pump.
This means that the pump does not start every time a water tap is opened.
A hydropress instead has a rubber membrane between the water and the air.
In a hydropress, the air side of the membrane is “pre-pressurized”.
The hydropress is smaller in size than the hydrophore