The knife gate valves and ordinary gate valves are two commonly used valve types, however, they exhibit significant differences in the following aspects.

1.Structure

The blade of a knife gate valve is shaped like a knife, while the blade of an ordinary gate valve is usually flat or inclined. This design allows the knife gate valve to cut off the medium flow more effectively when closed. Compared with ordinary sluice valve gates, knife gate valves are small in size, simple in structure, light in weight, flexible in operation, and require less installation space.

2.Scope of application

Double seal knife gate valves are usually used for the flow control of viscous media containing solid particles, such as mud, pulp, coal pulp, etc., so knife valves are widely used in pulp industry, beverage industry, chemical industry, etc. The design of the knife-shaped ram can scrape the impurities on the sealing surface and maintain good sealing performance. The ordinary wedge gate valve is more suitable for the flow control of clean media, such as water, oil, etc.

3.Service life

Due to the structural characteristics of the knife gate valve, its sealing performance is relatively better, so the service life is usually longer than that of rising gate valves.

In general, wcb knife gate valves and ordinary gate valves have advantages and disadvantages, which type of valve to choose depends on the specific application scenario and needs. When selecting the valve, the nature of the medium, flow rate, pressure and other factors should be fully considered to ensure that the selected valve can meet the actual needs and has good performance.

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