Adjusting Needle Valve
Your Professional Adjusting Needle Valve Supplier
Our goal is to become your true partner in the field of adjusting needle valve in China. Hongchuang is a precision automatic machine tool manufacturer specializing in R & D, manufacturing and sales. The company's strategic positioning is to become an industry leader in the field of automation equipment and to provide customers with a full range of product and service solutions. Our company is committed to applying advanced manufacturing technology and strict quality control standards to every product. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
Product Application
Our company's main products include multi-axis multi-station turret machines; automatic punching machines, automatic wire stripping machines, mirror machines, flat head machines; automatic CNC lathes and other special machines. Mainly used in valve manufacturing, automotive parts manufacturing and other industries.
Product Market
The marketing network of these products is spread all over the world, including Russia, India, Bangladesh, the Middle East, Europe and the United States.
Our Team
Our technical team is composed of technical experts and engineers with decades of experience. Our sales team is composed of highly qualified sales staff. Our production team is composed of a group of well-trained, tolerant and productive workers.
Our Service
The company has a professional sales team to provide you with high-quality pre-sales consulting services. During the order production process, customers can communicate with us at any time to understand the production progress. At the same time, we provide high-quality after-sales service to meet the different needs of customers.
Advantages of Adjusting Needle Valve
Precision flow control: Needle valves are essential for precise flow control, which is critical in many industrial applications. The design features a tapered pin and a long, threaded stem, allowing for meticulous adjustments and ensuring accurate flow rate control.
Flexibility and adaptability: Needle valves offer flexibility in adjusting flow rates, accommodating very low to nearly maximum flow without fully opening the valve. This adaptability suits a wide range of applications, from delicate laboratory experiments to robust industrial processes.
High safety level: The precision and adaptability of needle valves contribute to high safety in various applications. Accurate flow adjustments minimize the risk of leakage and potential damage, preventing dangerous situations like over-pressurization or hazardous fluid release.
Compact design: Needle valves are compact, making them advantageous for applications with limited space. Their small footprint does not compromise functionality, making them ideal for installations where space is limited.
Easy shut-off: Despite their precise flow control, needle valves can be shut off easily. The fine-threaded stem allows shut-off with minimal effort, often requiring only finger-tight pressure. This feature ensures quick, reliable operation, crucial for situations needing a rapid response.
Efficiency: By enabling precise flow control, needle valves enhance overall system efficiency. Users can regulate the exact amount of fluid or gas needed, reducing wastage and optimizing resource use.
Control of fluid and gas flow: Needle valves are widely used to control the flow of clean gases and fluids with high precision. In propane and automated combustion control systems, needle valves regulate the burn rate and fuel flow, ensuring optimal combustion and safe operations.
Water management: In water management, needle valves play a crucial role in controlling water pressure and flow rates. They are used in dams, reservoirs, power plants, and water systems to maintain pressure levels and ensure smooth water flow.
Industrial processes: In industrial processes, needle valves shut off pressure gauges, control flow rates in metering devices, and regulate air flow to cylinders, controlling piston speed.
Throttling and bleeding: Needle valves’ precise flow control at low rates makes them ideal for throttling and bleeding applications. They are commonly used as bleed valves in water-heating systems to remove air from the lines, ensuring efficient operation and preventing issues such as airlocks.
Remote and automated operations: Motorized needle valves are useful for remote, closed, or timed operations. They are used in systems where manual adjustments are impractical or where automation can enhance efficiency and safety.
Laboratory and vacuum systems: In labs and vacuum systems, needle valves control gas flow at low pressures in equipment like gas lasers and vacuum tubes, ensuring experimental accuracy and safety.
Automotive and engine systems: In automotive and engine systems, needle valves regulate fuel flow, ensuring proper fuel delivery and optimal engine performance. By providing fine control over fuel flow, needle valves help maintain optimal combustion conditions, reducing emissions and improving fuel economy.
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Product name |
Adjusting needle valve |
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Fluid medium |
Air |
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Max. operating pressure |
0.9MPa |
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Max. vacuum |
-100kPa |
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Operating temperature range |
0～60℃ (No freezing) |
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Mm size(mm) |
φ4, φ6, φ8, φ10, φ12 |
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Inch size |
φ5/32, φ3/16, φ1/4, φ5/16, φ3/8, φ1/2 |
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Metric male thread |
M5x0.8 |
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Taper pipe male thread |
R1/8, R1/4, R3/8, R1/2 |
Types of Adjusting Needle Valve
This type of needle valve features a threaded bonnet that screws onto the valve body, providing a secure seal. It is commonly used in low to medium pressure applications and is suitable for general-purpose fluid control.
Union bonnet needle valves have a bonnet that can be easily removed for maintenance or repair. They are designed for applications requiring frequent access to the valve internals, such as sampling systems and pressure gauges.
Rising stem needle valves feature a stem that moves linearly upwards as the valve is opened, providing visual indication of the valve position. They are commonly used in systems where precise control and visual feedback are necessary, such as laboratory equipment and flow metering devices.
Non-rising stem needle valves have a stem that does not move vertically as the valve is operated. Instead, the stem rotates to control the flow rate. This design is suitable for applications with limited space or where vertical movement is restricted.
Multiport needle valves have multiple inlet and outlet ports, allowing for versatile flow configurations. They are commonly used in complex fluid systems where multiple flow paths are required, such as distribution manifolds and mixing applications.
Brass: Yet, the brass material is ideal for non-corrosive and neutral media. That’s why the primary application of this material is for drinking water.
Stainless steel: Another material used for manufacturing needle valves is stainless steel. The valve manufactured from this material has good chemical resistance for any media. The material can resist high pressure and temperature. Yet, it is durable. It applies to corrosive and aggressive media like salt water. Yet, it will rust unless the stainless steel is exposed to seawater.
Adjusting Needle Valve Of The Installation Precautions
Needle valve installation location, height, import and export direction must meet the design requirements, pay attention to the direction of media flow should be consistent with the direction of the valve body arrow, the connection should be firmly close.
The valve must be installed before the appearance of inspection, the valve nameplate should be consistent with the existing national standard. For working pressure greater than 1.0 mpa and in the trunk pipe to play a role in the disconnection of the valve, the installation should be carried out before the strength and rigidity of the test, qualified after quasi-use. Strength test, the test pressure of 1.5 times the nominal pressure, the duration of not less than 5min, the valve shell, the filler should be no leakage for the qualified. Tightness test, the test pressure is 1.1 times the nominal pressure.
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Packing |
Outside package: Standard export wooden cases. Inner package: Stretch film. |
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Shipping |
Container transport, by sea. |