What are the general advantages of slurry valves?

Release time:

2022-06-09

The slurry valve has the following advantages: Its structure is simple because it adopts a flange-type design. Compared with conventional valves, this valve boasts a smaller size and lighter weight. Its installation location is unrestricted, making it easy to set up. Due to its compact footprint and minimal space requirements, it plays a positive role in reducing plant floor area, lowering building height, and saving on capital investment.

　　The slurry valve has the following advantages: Its structure is simple due to its use of a clamp-type design. Compared with conventional valves, this valve features a compact size and light weight. Its installation location is not restricted, making it easy to set up. Because it occupies less space, it plays an active role in reducing plant floor area, lowering building height, and saving infrastructure investment.

　　This valve features low fluid resistance; its fully open passage is akin to a short pipe section with smooth valve walls, which effectively prevent media from depositing inside the valve. As a result, the valve operates smoothly and sensitively, with no sticking or jamming, and is highly resistant to blockage. The gate, which boasts excellent wear resistance, corrosion resistance, and sealing performance, is made of stainless steel of varying grades tailored to the specific properties of the medium. Rubber sealing rings can also be used inside the valve.

　　This ensures excellent sealing performance of the valve. Operational tests have demonstrated that this valve boasts a long service life—3 to 4 times longer than that of conventional valves. The slurry valve series offers a wide variety of specifications, making it easy to select the right model for specific applications. It can be used not only in wastewater and sludge treatment projects but also in industries such as coal, metallurgy, papermaking, chemical processing, power generation, and sugar production.

　　The device features a simple and convenient repair design. This valve employs a clamp-type connection, in which the valve is clamped between two flanges on the pipeline and secured by bolts passing through the bolt holes in both the flanges and the valve body. It offers excellent economic benefits because this type of valve has a long service life, reducing daily maintenance costs and minimizing production downtime caused by valve blockages that would otherwise require replacement. The direct and indirect economic benefits are significant.

The vast majority of stainless steel knife gate valves employ forced sealing: that is, when the valve is closed, an external force is applied to forcibly press the gate against the high-pressure valve seat, thereby ensuring a tight seal on the sealing surfaces. Some gates can also be designed to undergo slight deformation, which helps improve their manufacturability and compensate for any misalignment in the sealing surface angles that may occur during the manufacturing process. Such gates are referred to as flexible gates. The majority of knife gate valves rely on forced sealing—meaning that when the valve is closed, an external force is used to press the gate firmly against the high-pressure valve seat, thus guaranteeing a secure seal on the sealing surfaces. Valves of this type are generally installed horizontally in pipelines.

2023-05-11

Next, let’s talk about several operating procedures for knife gate valves.

When a gate valve is closed, the sealing surfaces rely solely on the pressure of the medium to achieve a seal—specifically, the sealing surface of the gate is pressed against the valve seat on the opposite side by the medium’s pressure, thereby ensuring a tight seal. This type of sealing is known as self-sealing. In contrast, most gate valves employ forced sealing: when the valve is closed, an external force must be applied to press the gate against the valve seat in order to guarantee the sealing performance of the sealing surfaces. Such valves should be installed vertically in the pipeline.

2023-05-11

Next, let’s talk about whether knife gate valves have fire-resistant and anti-static requirements.

When an electrostatic knife gate valve is opened or closed, the sphere and the valve seat experience mutual friction. The static electricity generated by this friction tends to accumulate on the sphere—something that is unacceptable for ball valves used in gas, fuel, and chemical pipelines, as it could potentially lead to pipeline explosions. Ball valves with antistatic designs are equipped with static discharge devices.

2023-05-11

Next, let’s talk about some important considerations for the installation, operation, and maintenance of pneumatic knife gate valves.

Pneumatic knife gate valves have a wide range of applications, spanning from ordinary fields to more diverse industries—from coal preparation, gangue removal, and slag discharge in coal-fired power plants to urban wastewater treatment; from general industrial pipelines to pipeline systems used in food, sanitation, and pharmaceutical industries. So, what are the key considerations when installing, using, and maintaining pneumatic knife gate valves?

2023-05-11

Slurry Valve Manufacturer: How are stainless steel knife gate valves good?