Valve filter displays are the core elements that function the filtration function. Their layout have to stability filtration accuracy, go with the flow capacity, and carrier life. Different types of filter screens have significant differences in material, structure, and applicable scenarios. This article delves into these factors across various dimensions.

1. Core Elements of Filter Screens

1.1 Materials

The choice of material for filter screens depends on the properties of the fluid medium (such as corrosiveness, temperature, and pressure). Common materials include:

Metal Materials: Stainless Steel, Brass and Alloy.

Non-metal Materials:Nylon, Polypropylene and Ceramic

1.2 Filtration Precision

Filtration precision refers to the smallest particle diameter that the filter can capture, measured in microns (μm). Common filtration ranges are from 10μm to 2000μm.

Precision Selection:

Filters protecting sensitive valves or flow meters usually require precision between 10-50μm.

For general pipeline impurity interception, a precision range of 100-500μm is acceptable.

1.3 Structural Forms

The structure of the filter screen directly influences the filtration area and impurity holding capacity. Common forms include:

Woven Mesh: Made from either metal or non-metallic wires, this is suitable for most general filtration scenarios.

Perforated Mesh: Created by punching holes in metal sheets,  ideal for filtering large particles such as welding debris in pipelines.

2. Classification of Filter Screens

Based on the type of valve filter, the following categories of filter screens can be identified:

2.1 Y-Type Filter Screen

This filter screen has a conical or cylindrical shape and is designed to match the inclined structure of the Y-type filter. It facilitates the collection of impurities at the bottom of the screen due to gravity, commonly used in steam, water, and oil pipelines.

2.2 T-Type Filter Screen

Resembling a cylinder, the T-type is used for large-diameter pipelines (DN100 and above) due to its large filtration area and low flow resistance.

2.3 Basket-Type Filter Screen

Shaped like a basket, this screen is closed at the bottom, with filter holes on both the sides and bottom.

Conclusion

Valve filter screens are  essential factors in making sure effective filtration of fluid systems, and understanding their materials, filtration precision, and structural types helps optimize their performance for various applications.

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