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Knowledge of Strainer

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Knowledge of Strainer

Strainer is a small device for removing a small amount of solid particles in the liquid, which can make a compressor, a pump, an instrument and other equipment work normally. When the fluid enters the Strainer cartridge which has the strainer with a certain size, the impurities are blocked and the clean liquids are discharged through the Strainer outlet. If you want to clean the Strainer, you just need to take out the strainer which can be assembled. Install the strainer again after it is washed. Therefore, a Strainer is easy to be used and maintained. The debris such as scale deposits, rust, composite sealant, welding slags and other solid particles in the pipeline often causes damage to the equipment. We often use a Strainer in the pipeline in order to prevent the fluid containing dust and particles affecting the equipment. A Strainer should be installed at the upstream pumps so as to prevent the pump from being harmed by construction waste left in the pipeline. A Strainer can filtration solid particles in liquids or gases and protect the device from being damaged and the pipeline from being blocked.

Strainer is equipped with a filter net on the flow surface. When the liquid passes the Strainer, most impurities will be blocked by the strainer. The Strainer needs regular cleaning to avoid blocking the liquid.

Applications of Strainers

A Strainer is applied to liquid and gas materials used in chemical, petrochemical and light industrial production to Strainer solid impurities. A Strainer is usually installed at the inlet of a pump and a compressor or in front of a flow meter in order to protect this kind of equipment or instrument.
 

Standard Strainers include metric and British two series. Metric series include PN10, PN25 and PN40 three pressure ratings, while British series include Class150 (PN20) and Class300 (PN50) two pressure ratings. Pressure of the metric series Strainer such as Strainers with top ends and flat ends start from PN6 and the pressure include PN6, PN10 and PN25.
 

The main structural materials of the standard Strainer are cast iron, carbon steel, low alloy steel and austenitic stainless steel four kinds. The working temperature ranges of the Strainer are as the following. The working temperature range for cast iron is from -20 to 300C℃, carbon steel -20~400℃, low alloy steel 40~ 400℃ and stainless steel -196~400℃.
 

The stainless steel wire mesh is adopted for the Strainer, and it can intercept solid particles with a particle size of not less than 614μm.

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