Membranes are the constituent elements of accumulators for pumping stations. In this case, these are important devices.
They are designed to separate the capacity of the accumulator into two chambers: air and water. This is the main property of this device. Specialists often confuse these cameras. It must be remembered that water is pumped into the membrane, and the air between it and the walls of the accumulator is compressed, creating the desired pressure.
Product Varieties
For use, there are membranes for accumulators of heating and water supply. Consider each view in more detail.
- Membranes for water accumulators are white. They are made of natural rubber. This material is able to withstand the action of bacteria and meets the standards of hygiene and sanitation.
- Temperature condition: from 0 to 70 ° C.
- Maximum pressure - 7 bar.
- Membranes for heating accumulators can be black. They are made of special rubber - EPDM. This material is resistant to pressure drops and significant temperatures in heating systems.
- Temperature condition: from -10 to 99 ° C.
- Maximum pressure - 8 bar.
Replacing the membrane in the accumulator. Process description
The accumulator membrane almost always becomes unusable solely due to the user's fault. Theoretically, for the specified product, which, for example, is made of EPDM rubber, a guarantee is given for about ten years of service. There are accumulators with a membrane that cannot be removed.
This is regarded as a certain guarantee from the manufacturer, that is, it will be intact in different working conditions. In everyday life, units equipped with the pear-shaped devices indicated are used, and the membrane for the hydraulic accumulator (100 l) resembles the shape of a stocking with inlet and outlet.
Replacing the diaphragm for the hydraulic accumulator of a domestic pump
This process is not so complicated. Initially, you must turn off the power and release the system pressure.
- Despite the unsuitability of the membrane for pressure accumulators, you must once again make sure that there is no air pressure in the device.
- Then we unscrew the bolts, remove the flange and get the damaged membrane.
- Having screwed the flange in its place, inject air to 1.4 atmospheres.
- Then it is necessary to fill the pump with water, connect the power and pump pressure into the system.
After that, you can safely use the device.
Tip
This product is often found on the market, as it is a consumable item. You can also ask about its availability from the manufacturer or supplier of hydraulic accumulators. They will provide the necessary assistance in choosing the specified device. It should be borne in mind that membranes from one manufacturer quite often do not fit the device from another due to differences in the diameter of the neck. Also, do not forget about the periodic check of the air pressure in the device, so that in the near future it would not be necessary to again replace the membrane in the accumulator.