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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
★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
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.
★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℃
【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.
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
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.
FINE FLOW ADJUSTMENT — This 1/4 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.
1/4 NPT MALE-FEMALE FIT — This 1/4 NPT valve has a female inlet and male outlet. Use the male-female needle valve only in the direction shown by the body arrow, and verify both mating threads before installation.
RATED OPERATING RANGE — This hydraulic needle valve is rated up to 900 PSI and from -40°F to 400°F. The fluid metering valve should be operated within both limits and installed only in a compatible line.
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...
Last update on 2026-10-15 / 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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