Filter is to remove a small amount of solid particles in the liquid of the small equipment, can protect the normal work of the equipment, when the fluid into the filter cartridge with a certain specifications of the filter, its impurities are blocked, and the clean filtrate is discharged by the filter outlet, when it is necessary to clean, as long as the removable cartridge is removed, reloaded after treatment.

1. Filter inlet and outlet diameter:

In principle, the inlet and outlet diameter of the osmosis water filter should not be smaller than the inlet diameter of the matching pump, which is generally consistent with the caliber of the inlet pipeline.

2. Nominal pressure selection:

The pressure level of the filter is determined by the maximum pressure that may occur in the filter line.

3. Selection of the number of holes:

The choice of the number of filter holes mainly considers the particle size of the impurities to be intercepted, which is determined according to the process requirements of the medium process. The particle size of the various specifications of the screen can be intercepted Check the following table "Filter Specifications".

4. Filter material:

The material of the filter is generally the same as the material of the connected process pipe, and for different service conditions, consider choosing a filter made of cast iron, carbon steel, low alloy steel or stainless steel.

5. Calculation of filter resistance loss 

Water filter, under the general calculation of the rated flow rate, the pressure loss is 0.52 ~ 1.2kpa.

What filters do you know?

1.  water pump

The power device of the filter system, divided into submerged type and away water type, driven by frictionless electromagnetic rotor, can theoretically run permanently, the submersible type is a fully sealed structure, relying on the water body to cool down, after leaving the water, the rotor coil will be burned due to high temperature.

2. Upper filter  

The filter tank (box) mounted on the upper part of the fish tank is driven by a submerged water pump or a away water pump, and the water flows back to the fish tank by the laxative orifice, and the maintenance interval is shorter and the maintenance is more convenient, but it is not recommended for the aquatic grass tank for filling co2.

3. spin down sediment filter 

The spin down sediment filter box (barrel) with filter cotton or deepening cotton is directly installed at the inlet under the submersible water pump, the maintenance interval is short, the cleaning is more inconvenient, and the price is easy.

4. External filter

Generally for the barrel structure, the pump is generally directly built in the barrel lid, through the pipeline from the fish tank pumping water, in the bucket after the physical and biochemical filtration, and then through the outlet pipe back to the fish tank, the filter body is larger, the maintenance interval is longer, the cleaning is more inconvenient, the price is expensive.

5. Plug-in filter  

The weakened version of the external filtration, hanging on the outside of the fish tank, with a water pump, some pumps in the filter box, some pumps in the inlet, through the pipeline from the fish tank pumping, in the filter box biochemical and house filtration, and then through the outlet pipe back to the fish tank, due to the limited filter space, small flow, the filtration effect is less than ideal, the price gap is cheap, generally as an auxiliary filtration equipment appears.



Stainless steel filters are widely used in pipelines of steam, air, water, oil, and other media; Protect all kinds of equipment, pumps, valves, etc. of the pipeline system; Protected from clogging and damage caused by impurities such as rust and welding in the pipeline. Stainless steel filter has strong stain resistance, convenient sewage discharge, large circulation area, small pressure loss, simple structure, small size and light weight. The filter is made of stainless steel, which has strong corrosion resistance and long service life.