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Navigating the world of arts and crafts often requires specialized tools to achieve professional results. For sewing and knitting projects, precise control over fluid flow, such as in yarn treatments or specialized dyeing processes, can be critical. Selecting the right needle valve ensures consistent application and protects your delicate materials from damage.
Needle Valves are designed to regulate flow to an instrument or other industrial application. They are rugged enough for the oil & gas market, and suitable for most industrial applications
It can be used to open and close the propane. If you need a long time and stable control, it would be better to use with a regulator
The flow works in either direction. If it leaks, you can replace the O ring inside with pliers, or a bit of Teflon tape is recommended for sealing on both end
Working Pressure: Rated to 600 PSI. Temperatures range from -4 to 450 F
Package include: 2 PCS 1/4" Female * 1/4" Male Needle Valve with 4 PCS Silicone O ring
Needle Valves are designed to regulate flow to an instrument or other industrial application. They are rugged enough for the oil & gas market, and suitable for most industrial applications
It can be used to open and close the propane. If you need a long time and stable control, it would be better to use with a regulator
The flow works in either direction. If it leaks, you can replace the O ring inside with pliers, or a bit of Teflon tape is recommended for sealing on both end
Working Pressure: Rated to 600 PSI. Temperatures range from -4 to 450 F
Package include: 2 PCS 1/4" Female * 1/4" Female Needle Valve with 4 PCS Silicone O ring. Any Problems just contact us to resolve
FINE FLOW ADJUSTMENT — This 1/2 needle valve works as an inline needle valve to meter water, oil, or gas in single-direction lines. The needle mechanism supports gradual adjusts instead of simple on-off control.
304 STAINLESS STEEL — The valve body and stem use 304 stainless steel. This flow control valve also serves as a fine flow adjustment valve for compact fluid lines where controlled metering is needed.
FEMALE-TO-FEMALE CONNECTION — This 1/2 NPT valve has a female inlet and outlet. Use the 1/2 NPT straight flow control needle valve only in the direction shown by the body arrow, and verify both mating threads before installation.
RATED OPERATING RANGE — This hydraulic flow control needle valve is rated up to 900 PSI and from -40°F to 400°F. The metering valve should be operated within both limits and installed only in a compatible line.
WATER, OIL, AND GAS — This needle valve 1/2 supports compatible water, oil, and gas lines. The 1/2" npt flow control valve package includes one unit for replacement, maintenance assemblies requiring directional control.
PAY ATTENTION TO THE SIZE — Female NPT 1/2 is nearly 3/4 inch ID.
★Needle valve is an important part of the instrument measurement pipeline system, used to adjust the flow to the instrument or other industrial applications, open or cut off the pipeline path
★Generally used in water, steam, gas, oil and other media with smaller flow and higher pressure. It is often used in industrial automatic control piping systems such as ships, oil refining, chemical, electric power, medicine, and food
★Made of high-grade solid brass, exquisite processing, can withstand greater pressure than other types of valves, good sealing performance, if you need a long time and stable control, it is best to use it with a regulator
★Working pressure: rated ≤15MPa. The temperature range is -40℃ to 200℃
Needle Valves are designed to regulate flow to an instrument or other industrial application. They are rugged enough for the oil & gas market, and suitable for most industrial applications
It can be used to open and close the propane. If you need a long time and stable control, it would be better to use with a regulator
The flow works in either direction. If it leaks, you can replace the O ring inside with pliers, or a bit of Teflon tape is recommended for sealing on both end
Working Pressure: Rated to 600 PSI. Temperatures range from -4 to 450 F..When purchasing fittings, consider the application, as this will affect material type, shape, size, and required durability
Package include: 2 PCS 1/4" Male * 1/4" Male Needle Valve with 4 PCS Silicone O ring. Any Problems just contact us to resolve
Versatile Multipurpose Set: enjoy the convenience of 4 pcs 1/4-inch compression-type brass needle valves in one set, ideal for various daily applications; Whether for personal use, replacements, or sharing with others, these valves offer flexibility and...
Product Dimensions: the threaded pipe fitting is 1/4 inch, 4.5cm/1.77 inches long, 3.5cm/1.37 inches wide, and 1.5cm/0.59 inches high; Its unibody construction ensures optimal robustness and durable quality
Superior Material Quality: composed of lead-free brass, these valves offer excellent corrosion resistance, thermal conductivity, and mechanical strength; This ensures longevity and adaptability for use with various media like water and oil, With an...
Easy Installation: the needle-type handle allows for easy operation and precise flow adjustments; With a simple rotation, users can achieve quick start/stop or fine-tuned flow control, all manually operated without complex tools, no welding or additional...
Reliable for Various Applications: widely applicable in instrumentation, hydraulic, and pneumatic systems, not applicable to natural gas or liquefaction petroleum gas, these valves are a dependable choice for precise flow management; Ideal for industrial...
Product Type —— Needle Valve(1/4" Female NPT),Used for flow regulation, suitable for water, gas, oil, fuel and other media transmission, good sealing, no leakage, used in industry to connect different types, diameters or materials of pipes or...
Product Material —— Forging of 304 stainless steel strength and resistance to corrosion.
Working Temperature —— Temperature range from 32 to 176 degrees F.
Maximum Pressure —— Maximum working pressure is 1450PSI.
Special Feature —— The quality of forged stainless steel is better than casting.
Fine Control for Small Flow Changes - The precision handwheel helps this needle valve make smooth, incremental adjustments, reducing sudden flow swings in pressure gauge systems, instrument lines, and other applications that need controlled regulation.
Compact NPT 1/4 Fit - This 1/4 NPT valve uses a standard male thread connection for broad compatibility across pipelines. If you are looking for a needle valve NPT 1/4 size, this compact format is easy to install.
Built from 304 Stainless Steel - The forged body gives this NPT 1/4 needle valve dependable strength for long-term use with water, oil, steam, and gas media, making it a practical choice for workshop, plant, and equipment maintenance needs.
Industrial Flow Damping Performance - Use it as a hydraulic flow control valve in hydraulic or pneumatic systems where pressure balancing, flow damping, and measured delivery matter more than simple on-off operation.
Metering Valve for Multiple Systems - Ideal as a metering valve for lab instruments, process lines, and compatible gas control setups. It can also serve in selected propane valve applications where system thread, pressure, and media requirements match.
【Material】Lead Free Brass.Which is corrosion resistance, no leaking, ductility at high Which make it much more healthy for human. Design certified to ANSI/NSF-61 and ASSE 1061 product standard for use in potable water and hydronic heating water...
【Application】Needle Valves are designed to regulate flow to an instrument or other industrial application. They are rugged enough for the oil & gas market, and suitable for most industrial applications.It can be used to open and close the propane. If...
【Size】1/4" OD Compression x 1/4" OD Compression.This compression needle valve allows very fine control of water flow. It has 2 compression connections.
【Parameter】Working Pressure: Rated to 600 PSI. Temperatures range from -4 to 450 F.
Last update on 2026-08-31 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Needle Valves
Comparison Tips
Compare materials for chemical compatibility and durability.
Check pressure and temperature ratings against your project's needs.
Evaluate connection types for ease of installation and leak-proof security.
Consider the precision of flow control offered by different valve designs.
Read reviews focusing on leak prevention and ease of adjustment.
Frequently Asked Questions
What is the primary function of a needle valve?
A needle valve is designed for precise flow control of liquids or gases. Its key feature is a fine-tapered needle that fits into a seat, allowing for very small adjustments to the flow rate.
How do I determine the correct material for a needle valve?
Material selection depends on the fluid being controlled and the operating environment. Consider corrosion resistance, temperature tolerance, and potential for contamination. Common choices include brass for general use and stainless steel for more demanding applications.
What does 'pressure rating' mean for a needle valve?
The pressure rating indicates the maximum pressure at which the valve can safely operate. It's crucial to match this rating to the system's operating pressure to prevent failure and ensure safety.
Are needle valves suitable for high-temperature applications?
Many needle valves are designed for high-temperature use, but material selection is critical. High-grade stainless steel and specific sealing materials are often required for elevated temperatures.
How do I ensure a leak-proof seal when installing a needle valve?
Proper installation involves ensuring the mating surfaces are clean and that connections are tightened correctly according to the valve manufacturer's specifications. Using appropriate thread sealant or tape can also help prevent leaks.
Can needle valves be used for shutting off flow completely?
Yes, needle valves can shut off flow, but their primary strength lies in fine regulation. For applications requiring a complete, bubble-tight shut-off, other valve types might be more suitable, though many needle valves offer excellent sealing capabilities.
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