Forged Body Needle Valves-Dual Ferrule Types

Forged Body Needle Valves-Dual Ferrule Types

SIYelectric Needle Valves are designed for precise flow adjustment of liquids and gases in industrial process systems, instrumentation lines, testing equipment, and fluid control applications.

Compared with general shut-off valves, a needle valve uses a fine-threaded stem and tapered needle tip to provide more accurate flow regulation. This makes it suitable for applications where the flow rate needs to be adjusted gradually and controlled with higher precision.

The valve body can be manufactured from forged materials to provide good mechanical strength, pressure resistance, and durability under demanding operating conditions. Its compact body structure helps reduce leakage risk and supports reliable operation in oil & gas, chemical processing, power generation, laboratory systems, and general industrial fluid control.

Applications

Flow Regulation

Precise liquid and gas control
Used in gas pipelines, liquid process lines, sampling systems, and instrumentation loops where the flow rate needs to be adjusted carefully rather than simply opened or closed.

Stable throttling operation
The needle-shaped stem allows gradual flow adjustment, making it suitable for low-flow or controlled-flow applications.

Testing and Calibration

Instrumentation calibration support
Commonly used in pressure instrument calibration, test benches, laboratory systems, and process control equipment to regulate test fluids or gases.

Controlled pressure release
Can be used together with pressure gauges, pressure transmitters, manifolds, and calibration devices to control fluid introduction, venting, or pressure reduction.

Gas and Liquid Distribution

Industrial distribution systems
Suitable for gas and liquid distribution lines in oil & gas, chemical, pharmaceutical, food and beverage, and general process industries.

Process line adjustment
Used where operators need reliable local control of small flow rates, sampling flow, purge gas, or auxiliary process fluid.

Pressure Control

Sensitive fluid handling
Applied in fuel systems, high-pressure systems, hydraulic systems, pneumatic systems, and critical fluid handling applications where pressure and flow need to be controlled carefully.

Hazardous media service
For corrosive, toxic, flammable, or high-pressure media, valve material, sealing structure, pressure rating, and connection type should be selected according to the actual process conditions.

Advantages

• Precise flow control for liquids, gases, test fluids, and instrumentation lines.
• Fine-threaded needle stem allows gradual and accurate flow adjustment.
• Forged valve body option provides higher strength and better pressure resistance.
• Compact one-piece body design helps reduce potential leakage points.
• Suitable for high-pressure and high-temperature applications, depending on material and sealing selection.
• Widely used in instrumentation, testing, calibration, sampling, and process control systems.
• Material options available for different media, including stainless steel and corrosion-resistant alloys.