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Needle valve
Product classification of Meiyan One Pump Valve
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- ShangHai Meiyan Yi Pump & Valve Co.,LTD.
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
Needle valve
Needle valves have the characteristics of high applicable pressure, multiple structural forms, easy installation and disassembly, tight connection, and high fire prevention, explosion prevention, and pressure resistance. The needle valve products produced by Shanghai Meiyanyi Pump Valve have the characteristics of good sealing performance and high quality at a low price. Needle valves are a type of globe valve in the series, and their working principle is the same. The usage situation depends on the site conditions. Each valve corresponds to a certain working pressure. Generally, globe valves can be used for pipelines with larger diameters, while needle valves are generally used for pipelines with small diameters and high pressures. The needle valve connection methods produced by Shanghai Meiyan Yi Pump Valve include various specifications and models such as internal thread, external thread, welded pipe, flange connection, internal and external thread, also known as instrument valve, instrument valve group, etc. The applicable pressure can reach up to 32Mpa or 15000psi. The following product pictures are for reference only.
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Flange Needle Valve
The main connection method for flange needle valves is flange connection, which generally has straight through and angle structures. Needle valves are suitable for high pressure, so the flange surface is mainly concave flange, convex flange or concave convex surface. Of course, flange needle valves selected in low-pressure pipeline equipment also have flat flanges. The working principle of the flange needle valve produced by Shanghai Meiyanyi Pump Valve is to control the fluid through a pointed conical opening and closing component. When the needle valve is closed, the opening and closing member completely closes the valve port, and fluid cannot pass through; When the needle valve is opened, the opening and closing member gradually opens the valve port, and the fluid can gradually pass through. The opening and closing components of the needle valve can be directly driven by the handwheel to drive the valve stem, achieving rotational opening and closing. The structural characteristics of needle valves include a needle shaped valve plug, which can achieve maximum fine adjustment from closing to opening.View details>>
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Welding Needle Valve
Welding needle valve is a type of valve that is connected to pipeline equipment using welding technology, mainly including butt welding, socket welding, and welded pipe. One special attention to welding valves is the actual size of the welding head, which must be accurately known about the diameter of the welded pipe (i.e. the inner diameter of the pipe) and the outer diameter of the welded pipe (usually represented by Ø). The working principle of the welded needle valve produced by Shanghai Meiyanyi Pump Valve is to control the flow rate and pressure of the fluid by changing the distance between the valve core and the valve seat. When the valve core is separated from the valve seat by different distances, different annular gaps are formed between the valve core and the valve seat, thereby changing the channel area of the fluid and achieving flow regulation. Due to the generally small diameter of welded needle valves, coupled with the design and structural characteristics of needle valve stems, they can adjust and change flow and pressure very accurately.View details>>
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Threaded Needle Valve
Threaded needle valves are pointer valves (needle valves) that are connected using threaded connections, mainly including internal and external threads, as well as common internal and external thread needle valves. In terms of thread standards, they can also be divided into commonly used British G-thread, American NPT, taper thread, etc. Threaded connected needle valves are very convenient to install and use, can effectively improve installation efficiency, and are suitable for various high-pressure pipeline equipment. The threaded needle valves produced by Shanghai Meiyanyi Pump Valve are widely used in various situations that require precise flow control, such as flame cutting, where the needle valve is used to adjust the flame temperature; In instrument measurement pipeline systems, threaded needle valves are important components for opening or cutting off pipeline pathways, especially used as pressure gauge needle valves.View details>>
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Card sleeve needle valve
The valve core of the sleeve type needle valve is a pointed cone, and its main feature is that it is connected to the pipeline in a sleeve type connection. The card sleeve needle valve produced by Shanghai Meiyan Yipump Valve can withstand greater pressure and has better sealing performance than other valves of the same type. It is generally used for sealing gas or liquid media with smaller flow rates and higher pressures. Card sleeve needle valve is an important component of pipeline systems, which is used to open or cut off pipeline passages. It has the advantages of easy installation and disassembly, tight connection, high fire prevention, explosion prevention, and pressure resistance, and good sealing performance. It is an advanced connection method valve in power plants, refineries, chemical plants, and instrument measurement pipelines, and is more suitable for situations with small load changes and low requirements for speed stability.View details>>
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High pressure needle valve
High pressure needle valve refers to a needle valve suitable for pipeline equipment with pressures ranging from 10Mpa to 100Mpa, while the American standard ranges from 1500LB-2500LB. The connection methods for high-pressure needle valves can be threaded, welded, or flanged. High pressure valve body materials include forged steel A105, forged stainless steel 304, 304L, 316, 316L and other materials. Applicable temperature: -196 ℃~+440 ℃, -70 ℃~-240 ℃, ≤ 540 ℃, ≤ 570 ℃ and other working conditions. The working principle of the high-pressure needle valve produced by Shanghai Meiyanyi Pump Valve is to control the flow rate and pressure of the fluid by changing the distance between the valve core and the valve seat. When the valve core is separated from the valve seat by different distances, different annular gaps are formed between the valve core and the valve seat, thereby changing the channel area of the fluid and achieving precise adjustment of the flow rate.View details>>
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Pressure gauge needle valve
Pressure gauge needle valve refers to a needle valve with one end suitable for connecting various pressure gauges. It is mainly used to observe the pressure of pressure vessels and pipelines, and can effectively cut off the channel between pipeline equipment and pressure gauges. The structural form of pressure gauge needle valves can be diversified according to the actual needs of instrument pipelines, including straight through type, angle type, etc. The working principle of the pressure gauge needle valve produced by Shanghai Meiyanyi Pump Valve is to control the fluid through a pointed conical opening and closing element. When the needle valve is closed, the opening and closing member completely closes the flow channel to form a seal; When the needle valve is opened, the opening and closing member gradually opens the valve port, and the fluid can gradually pass through. The opening and closing component of a needle valve is the valve stem, which can be directly driven to move by a handwheel to achieve rotational opening and closing.View details>>
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Instrument Valve Group
Instrument valve group refers to a needle valve composed of multiple instrument valves, generally including two valve group, three valve group, five valve group, etc. It is mainly used for various complex multi pipeline equipment, and controls the flow rate, pressure, direction and other functions of the equipment through multiple control units of one valve. The instrument valve group is suitable for various working conditions such as temperature: -20 ℃~+440 ℃ -70 ℃~-240 ℃ ≤ 540 ℃ ≤ 570 ℃. The valve body materials include A105, 304, 304L, 316, 316L, WC6, WC9, etc. The instrument valve group produced by Shanghai Meiyanyi Pump Valve is widely used in the semiconductor industry for precise adjustment of nitrogen purging volume and control of air flow. It has the advantages of easy installation and disassembly, tight connection, high fire prevention, explosion prevention and pressure resistance, and good sealing performance.View details>>
Contact us
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
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