ASTM A105 Needle Valve, 1/2 Inch, 6000 PSI, DN15, FNPT Ends

Product Name: ASTM A105 Needle Valve, High Pressure
Body Material: Carbon Steel ASTM A105
Size: 1/2 Inch, DN15
Pressure: 6000 PSI
End Connection: FNPT

The internal thread high-pressure needle valve is a fine-tuning valve featuring a needle-shaped valve plug, primarily used to adjust the throttle flow rate. This valve allows for gradual and continuous adjustments from closed to fully open, ensuring precise flow control. The needle valve plug, typically made of quenched steel long needles, fits tightly against the valve seat, which is often crafted from soft materials like tin or copper. The sealing between the needle and valve seat is achieved through the tight fitting of the conical surfaces. The valve needle typically has a taper with cone angles of 1:50 or 1:60, with the cone surface finely ground to ensure a tight seal. The sealing between the valve stem and seat is maintained through the use of corrugated pipes.

Technical Specifications

» Valve Size: (Imperial) 1/8–1 Inch, (Metric) M6–M28
» Main Materials: Copper, A105, SS 304, SS 316, Carbon steel, and various special materials
» Connection Form: Internal Thread
» Circulation Capacity: 0.4 – 1.2
» Temperature Range: -65°F to 600°F (-54°C to 316°C)
» Pressure Environment: High Pressure

Product Features

» Needle valves offer easy installation and disassembly, with tight connections that provide excellent fire prevention, explosion resistance, high-pressure tolerance, and good sealing performance. They are an advanced connection solution commonly used in power plants, refineries, chemical plants, and instrument measurement pipelines.
» The needle valve is known for its superior sealing performance and long service life. If the sealing surface is damaged, only the vulnerable parts need to be replaced, ensuring continued operation.
» When installing the internal thread high-pressure needle valve, ensure that the flow direction of the medium matches the arrow direction on the valve body.
» Needle valves are highly versatile and widely used in various applications. For instance, they are employed in flame cutting to control flame temperature, with the needle valve knob serving this function. Additionally, the instrument needle valve is a crucial component in measurement pipeline systems, including globe valves and ball valves, primarily used to open or close pipeline passages.