Basket Filter Housing

Basket Filter Housing

• How does it work

A basket filter is mainly composed of inlet and outlet pipes, filter cartridges, filter baskets, upper covers, sealing rings, and fasteners. When the fluid enters the filter cartridge equipped with a filter screen of a certain specification, the solid impurity particles are blocked in the filter basket, and the clean fluid passes through the filter basket and is discharged from the filter outlet. When cleaning is needed, open the drain valve, drain the remaining liquid, remove the upper cover, remove the filter basket, clean it, then reinstall it.

• Application

A basket filter is an indispensable device in the pipeline of conveying medium. It is usually installed at the inlet of a pressure-reducing valve, pressure relief valve, fixed water level valve, or other equipment to filter impurities in the medium to protect the valve and equipment. Basket filter is widely used in the industries of chemical, petrochemical, petroleum, paper, mining, electric power, liquefied gas, food, pharmaceuticals, water supply and drainage, municipal project, mechanical equipment, electronics, construction, and other fields.

• Specification

Material: AISI304, AISI316L, carbon steel

Design pressure: 1.0MPa, 1.6MPa, 2.5MPa

Inlet and outlet: DN25-300 flange

Filter aperture: 10-500 mesh or higher

Sealing ring: silicone rubber, EPDM, fluorine rubber

Filter elements: metal single-layer filter basket, metal sintered filter basket, etc.

• How to select the proper filter

1. Inlet and outlet diameter: in principle, the inlet and outlet diameter of the filter shall not be smaller than the inlet diameter of the matching pump, and it is generally the same as the inlet pipe diameter.

2. Nominal pressure: pressure level of the filter shall be determined according to the highest pressure that may occur in the filter pipeline.

3. Selection of aperture: key factor to be considered is the particle size of impurities to be intercepted, which is determined according to the processing requirements of the medium. Please ask us for the info on the particle size that filters can intercept.

4. Material: material of the filter is generally the same as the material of the connected process pipeline. Different materials such as stainless steel, carbon steel, or low alloy steel will be chosen according to your working conditions.

5. Opening area: opening area of the filter basket is 2-3 times larger than the area of the inlet pipe, and the pressure difference is 0.05-0.15MPa.

• How to install

1. Before installation, please make sure the fastening of the screws and the filter are clean. The basket filter is generally installed horizontally. The direction of the inlet and outlet should be consistent with the direction of the arrow on the valve body. Install before the pipe inlet ( Before the pump). During installation, please pay attention to the sign of flow direction.

2. The core part of filtering is the cylindrical screen. The screen is made of wire mesh or wedge wire. The screen is wearing part and it needs to be regularly maintained.

3. After working for a period of time, certain impurities can be precipitated in the filter basket. The pressure drop will increase and the flow rate will decrease consequently. Therefore, the impurities in the filter basket must be removed in time.

4. Filter basket shall be protected from deformation or damage when cleaning impurities, otherwise poor performance of filtering will occur.