When it comes to a gate valve, we should all be familiar with it. In short, a gate valve is a gate with opening and closing parts, and its movement direction and fluid direction are perpendicular to each other. In addition, the gate valve can only be fully opened or fully closed, and it can not be adjusted or throttled. However, people have been puzzled about the expression method and the meaning of gate valve models.
A gate valve is a common type of shut-off valve, and it is generally suitable for fullly opening or closing two position operation control, which is mainly used to stop the medium in the pipeline. This is called block methods. With the increasing demand for valves in the mechanical industry, gate valves have become an indispensable part of the control system in modern industry. However, because of more and more complex working conditions and strict use requirements, the correct selection of gate valve models is an adaptability to the medium in the pipeline, and also a safety guarantee for the use of the overall working conditions.
Moreover, as a user, we should have a detailed understanding of the preparation method of gate valve models, so as to avoid problems such as replacement or returning caused by wrong model selection, wrong orders and unknown technical parameters.
Descriptions of gate valve models
1. The first one is the additional code of gate valves: WZ is bellows gate valves, DZ low temperature gate valves, NKZ vacuum gate valves and PZ knife gate valves.
2. The gate valve type is expressed as Z.
3. The gate valve has manual, electro-hydraulic, bevel gear, pneumatic and electric drives.
4. Connection modes: 4 is flange connection, and 6 and 7 are welding and wafer type respectively.
5. Structural forms: 0 is the elastic plate; 1 is the open rod wedge single plate; 2 is the open rod wedge double plate; 3 is the open rod parallel single plate; 4 is the open rod parallel double plate; 5 is the concealed rod wedge single plate; 6 is the concealed rod wedge double plate; 7 and 9 are blind parallel single plates and blind parallel double plates respectively.
6. Sealing materials: the letter W is directly processed for valve bodies, while T and X are alloys and rubber. F is fluoroplastic, H-Cr is stainless steel, Y and M are cemented carbide and Monel alloys.
A gate valve is a common type of shut-off valve, and it is generally suitable for fullly opening or closing two position operation control, which is mainly used to stop the medium in the pipeline. This is called block methods. With the increasing demand for valves in the mechanical industry, gate valves have become an indispensable part of the control system in modern industry. However, because of more and more complex working conditions and strict use requirements, the correct selection of gate valve models is an adaptability to the medium in the pipeline, and also a safety guarantee for the use of the overall working conditions.
Moreover, as a user, we should have a detailed understanding of the preparation method of gate valve models, so as to avoid problems such as replacement or returning caused by wrong model selection, wrong orders and unknown technical parameters.
Descriptions of gate valve models
1. The first one is the additional code of gate valves: WZ is bellows gate valves, DZ low temperature gate valves, NKZ vacuum gate valves and PZ knife gate valves.
2. The gate valve type is expressed as Z.
3. The gate valve has manual, electro-hydraulic, bevel gear, pneumatic and electric drives.
4. Connection modes: 4 is flange connection, and 6 and 7 are welding and wafer type respectively.
5. Structural forms: 0 is the elastic plate; 1 is the open rod wedge single plate; 2 is the open rod wedge double plate; 3 is the open rod parallel single plate; 4 is the open rod parallel double plate; 5 is the concealed rod wedge single plate; 6 is the concealed rod wedge double plate; 7 and 9 are blind parallel single plates and blind parallel double plates respectively.
6. Sealing materials: the letter W is directly processed for valve bodies, while T and X are alloys and rubber. F is fluoroplastic, H-Cr is stainless steel, Y and M are cemented carbide and Monel alloys.
Next: Disadvantages, Common Faults and Maintenance of Gate Valves
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