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What are the different working conditions and media suitable for gate valves made of different materials?
Gate valve is not allowed to be used as a throttling device. During use, the valve seat should be avoided from opening slightly, because the mudstone of the high-speed flowing medium will accelerate the damage of the sealing surface.
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2024.05
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Do you know about pneumatic butterfly valve?
Pneumatic flange butterfly valve is composed of rubber seal butterfly valve, carbon steel or stainless steel valve plate and valve stem. It is suitable for regulating flow and intercepting media in water supply, drainage and gas pipelines with temperatures ≤80~120℃ such as food, chemical industry, petroleum, electric power, textile, paper making, etc.
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2024.04
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A Comprehensive Guide to Lug Butterfly Valve
Designed for reliable performance and easy operation, the lug butterfly valve has become a cornerstone in various applications, ranging from water treatment plants to chemical processing industries.
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2024.04
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Unveiling the Versatility and Efficiency of Knife Gate Valves
The knife gate valve stands out as a vital component in various industries, from wastewater treatment plants to mining operations and beyond.
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2024.03
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What characteristics should a high quality gate valve have?
A high quality gate valve should have the following characteristics: ① Sealing performance The sealing performance of the valve refers to the ability of each sealing part of the valve to prevent the leakage of the medium, which is the most important technical performance indicator of the valve. There are three sealing parts of the valve: the contact between the opening and closing parts and the sealing surface of the valve seat; Packing with the valve stem and stuffing box; The connection between the valve body and the valve cover. The leakage in the first place is called internal leakage, which is usually referred to as lax closing, which will affect the ability of the valve to cut off the medium. For cut-off valves, internal leakage is not allowed. The latter two leaks are called external leaks, that is, the medium leaks from inside the valve to outside the valve. Leakage will cause material loss, pollute the environment, and cause accidents in serious cases. For flammable and explosive, toxic or radioactive media, leakage is not allowed, so the valve must have reliable sealing performance. ② Action sensitivity and reliability Refers to the sensitivity of the valve to changes in medium...
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2024.03
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The most widely used valve – gate valve
Gate valve is one of the most commonly used opening and closing valves, using the seat (that is, the opening and closing part, in the valve the opening and closing part is called the seat or gate, and the cylinder is called the seat or gate seat) to dial (fully open) and cut off (fully closed) the medium in the pipeline. It is not allowed to be used as throttling, and it should be prevented from opening the seat in a small amount during use, because the mudstone of the high-speed flowing medium will accelerate the destruction of the sealing surface. The seat in the plane parallel to the gate seat channel center line for lifting movement, like the gate to cut off the medium in the oil circuit, so it is also called gate valve. Features of gate valve: ① Small flow resistance. The medium channel inside the valve is straight through, the medium flows in a straight line, and the flow resistance is small. ② Less effort when opening and closing. Compared with the stop valve, because whether it is open or closed, the direction of the seat movement is parallel to the direction of the medium flow....
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2024.03
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Why choose knife gate valve when the medium is mud?
Mud is a fluid medium with high particle content and high viscosity, which has high requirements on valves. In the process of handling mud, it is necessary to choose a valve that can effectively control the flow of fluid and prevent mud leakage. The knife gate valve is a valve that can meet these requirements.
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2024.02
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What are the installation and contraindications for valves such as gate valves and butterfly valves?
During the installation process of gate valves, butterfly valves and other valves, the quality of the installation will directly affect the normal operation in the future, so you must pay attention to it. So, how to install gate valves and butterfly valves? Five key points for installing the five major valves: 1. Direction and location Many valves are directional: For example, stop valves, throttle valves, pressure reducing valves, check valves, etc., if installed upside down, will affect the use effect and life (such as throttle valves), or will not work at all (such as pressure reducing valves), or even Causing hazards (e.g. check valves). Generally, valves have direction marks on the valve body. If not, it should be correctly identified based on the working principle of the valve. The valve cavity of the stop valve is asymmetrical from left to right, and the fluid must pass through the valve port from bottom to top. In this way, the fluid resistance is small (determined by the shape), and it is labor-saving to open (because the medium pressure is upward). After closing, the medium does not press the packing, which is convenient for maintenance. , this is why the stop valve cannot...
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2024.02
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Analysis of causes of gate valve leakage
Gate valve is the most common industrial valve and is widely used in industrial fields such as petroleum, petrochemicals, power stations, long-distance pipelines and shipbuilding. As a kind of fluid control equipment, the opening and closing part of the gate valve is a gate plate. Through the up and down movement of the gate plate, the open and closed states are switched, thereby realizing the function of cutting off or connecting the medium in the pipeline. If the gate valve leaks, it can easily cause hidden dangers to pipelines, equipment and facilities, and even affect the safety of personnel and equipment.
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2024.02
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You don’t even know about gate valve
The opening and closing part of the gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.
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2024.01
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Why is the triple eccentric butterfly valve so popular?
The new triple eccentric structure design realizes zero friction, more stable performance, and longer sealing service life. The delicate design ensures that the butterfly valve can be opened and closed flexibly from low to high temperatures, and the sealing performance is excellent, which is fully in line with the sealing standard of zero leakage of the valve under severe working conditions.
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2024.01
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What are the main types of gate valves classified according to gate plates?
Generally, it is recommended when the usage conditions or requirements require reliable sealing performance, high pressure, high pressure cutoff (large pressure difference), low pressure cutoff (small pressure difference), low noise, cavitation and vaporization phenomena, high temperature medium, and low temperature (cryogenic). Wedge gate valve. Such as electric power industry, petroleum refining, petrochemical industry, offshore oil, water supply engineering and sewage treatment engineering in urban construction, chemical industry and other fields.
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2023.12
