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

Release time:

2023-02-02

Slurry valve manufacturer: How to improve the compliance rate and productivity of stainless steel gate valves and prevent a large number of maintenance tasks—this is Skafu Valve’s top priority. The stainless steel gate plate effectively prevents sealing leaks caused by corrosion. The stainless steel gate plate effectively prevents sealing leaks caused by corrosion. Features: This valve boasts advantages such as simple and compact structure, reasonable design, lightweight and material-saving, reliable sealing, easy and flexible operation, small size, smooth flow passage, low fluid density, light weight, ease of installation, and ease of disassembly.

Slurry valve manufacturer: Nowadays, there are many well-known brands of stainless steel gate valves on the market, and each company boasts about how excellent their stainless steel gate valves are—this is perhaps understandable, given the purpose of online marketing. As for the price of slag-clearing gate valves, I’d still like to remind all customers to pay attention to the following points:

Slurry valve manufacturer: How much do stainless steel gate valves cost? First, take a look at the company’s qualification certificates; second, examine their entire process—from production and manufacturing to inspection of gate valves. Improving the compliance rate and productivity of stainless steel gate valves and minimizing maintenance tasks are top priorities for Skyfloat Valves. During the production of stainless steel plate gate valves, Skyfloat Valve manufacturers conduct 13 QC inspections, ensuring that the precision of each component reaches 0.05 mm. By setting stringent performance standards for manufacturing, continuously enhancing the machining accuracy and installation precision of parts and components, and improving the reliability of precision, Skyfloat Valve manufacturers have established an important approach to guaranteeing and boosting the yield of high-precision sludge-discharge gate valves.

Slurry valve

Slurry Valve Manufacturer: The electric knife gate valve—also known as the knife-type shut-off valve or knife gate valve—is suitable for pipelines conveying media such as pulp containing suspended particles, textile fibers, wastewater, mineral slurries, and slag-concrete mixtures. It uses a blade-shaped gate with a cutting edge capable of slicing through textile fibers to effectively isolate these substances. In fact, the valve body does not have a chamber; the gate is guided within lateral slots and is tightly pressed against the high-pressure valve seat by lugs at its bottom. If even stronger medium sealing is required, an O-ring sealed high-pressure valve can be employed for double sealing. According to the actuation method, knife gate valves are classified into manual knife gate valves, pneumatic knife gate valves, and electric knife gate valves. Knife gate valves feature light and flexible operation, compact size, smooth flow passage, low fluid resistance, lightweight construction, ease of installation and disassembly. Their nominal sizes range from DN50 to DN800, and they can operate normally under pressures from 0.6 MPa to 1.6 MPa, provided the ambient temperature remains below 100℃. The gate of the knife gate valve has a cutting action that can remove adhering substances from the sealing surfaces, automatically eliminating contaminants. Stainless steel gates help prevent corrosion-induced sealing leaks.

Slurry valve manufacturer: Function: Primarily used for draining and discharging materials from pipelines.

Slurry valve manufacturer: Applicable materials include flue dust, wastewater pulp, wastewater, mineral slurry, ash, and mixtures of slag and water, among others.

Applications: Primarily used in ore dressing, gangue removal, and slag cleaning at mining operations and power plants; can also be applied to wastewater treatment.

Features: This valve boasts advantages such as a simple and compact structure, an efficient design, lightweight construction that saves materials, reliable sealing, easy and flexible operation, small size, smooth flow passage, low fluid density, light weight, ease of installation, and ease of disassembly.

Slurry valve manufacturer: The application areas and applicable substances for knife gate valves are:

1. Mining, coal washing, and the steel industry—used for cleaning coal pipelines, slurry settling pipelines, and ash transport pipelines;

2. Purification device—used for sewage, slurry, waste materials, and clear water containing floating debris;

3. Papermaking industry—used for pulp of all concentration levels and slurry mixtures;

4. Dust removal in power plants—used for slag slurry.

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.