National standard check valve H41H-25 DN150

National standard check valve H41H-25 DN150It is a common lift check valve, which will be introduced from its meaning, structural characteristics, application, installation and other dimensions as follows:

Model meaning

H: Indicate the type of check valve, here representing a lift check valve.

4: The connection form is flange connection.

1: The structural form is a straight through type.

H: The sealing surface material is alloy steel.

25: The nominal pressure is 2.5 MPa.

DN150: The nominal diameter is 150mm.

structural characteristics

Excellent Material Selection: Compliant with relevant domestic and international standards, the materials are of high overall quality, ensuring the reliability and durability of the valve under different working conditions.

Good sealing performance: The sealing surface of the valve disc and seat is made of iron-based alloy or Stellite cobalt based hard alloy by welding, which has good wear resistance, high temperature resistance, corrosion resistance, abrasion resistance, long service life, and can effectively prevent medium leakage.

Precision manufacturing process: Designed and manufactured according to the national standard GB/T12235, the pressure bearing parts of the valve are cast using precision casting technology, with beautiful surface quality, no surface defects such as sand adhesion and cold insulation, stable internal quality, and no internal defects such as looseness, sand holes, cracks, etc.

Multiple connection methods: Various piping flange standards and flange sealing types can be used to meet various engineering needs and user requirements.

Main performance parameters

Nominal pressure: 2.5MPa, capable of withstanding the medium pressure at this pressure level.

Test pressure: The shell test pressure is 3.75MPa, and the sealing test pressure is 2.75MPa

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Applicable temperature: The general working temperature range is -29 ℃ to+550 ℃, depending on the valve body material and sealing material

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Applicable media: Suitable for various media such as water, oil, steam, acidic media, etc

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Application field

Petrochemical industry: used in petroleum refining, chemical production and other processes to prevent medium backflow in pipelines, ensuring the safety and stability of the production process.

Electric power industry: used in power plants such as thermal power and hydropower, for steam pipelines, water supply pipelines, etc., to prevent medium backflow from causing damage to equipment.

Water supply and drainage system: In urban water supply and drainage pipelines, it can prevent backflow of water, ensure the normal operation of the water supply system, and avoid water pollution and other problems.

National standard check valve H41H-25 DN150Installation precautions

Installation direction: During installation, pay attention to the direction of medium flow, which should be consistent with the arrow direction marked on the valve body to ensure the normal operation of the check valve.

Installation position: The lift type horizontal disc check valve should be installed on a horizontal pipeline, and the valve cover should be facing upwards for ease of inspection and maintenance.

Pipeline support: Do not let the check valve bear weight in the pipeline system. Large check valves should be independently supported to prevent them from being affected by the pressure generated by the pipeline system.