Integral Bonnet Needle Valves-Dual Ferrule Types

Integral Bonnet Needle Valves-Dual Ferrule Types

SIYelectric Needle Valves are used for precise regulation of liquid and gas flow in industrial process lines, instrumentation systems, calibration equipment, and laboratory applications.

The valve uses a tapered needle stem to control the opening area gradually, allowing operators to make fine flow adjustments rather than only opening or closing the line. This makes needle valves suitable for low-flow control, sampling lines, pressure testing, calibration loops, purge systems, and high-pressure fluid control.

With forged body construction available, SIYelectric needle valves provide strong mechanical performance, reliable pressure resistance, and good durability in demanding environments. The compact one-piece body design helps reduce leakage risk and supports stable operation in oil & gas, chemical processing, power generation, testing systems, and general industrial fluid control applications.

Applications

Flow Regulation

Accurate flow adjustment
Used in gas and liquid pipelines where the flow rate needs to be adjusted slowly and precisely.

Low-flow process control
Suitable for sampling systems, purge lines, instrument lines, and auxiliary process lines where small flow changes need to be controlled carefully.

Testing and Calibration

Pressure testing and calibration systems
Commonly used in laboratories, test benches, calibration equipment, and process control systems to regulate test liquids or gases.

Instrument protection and adjustment
Can be used with pressure gauges, pressure transmitters, manifolds, and test devices to control filling, venting, pressure release, or fine pressure adjustment.

Gas and Liquid Distribution

Industrial fluid distribution
Suitable for gas and liquid distribution systems in oil & gas, chemical, pharmaceutical, food and beverage, and general industrial applications.

Branch line control
Used where operators need reliable local control of flow in small pipelines, sampling points, or instrument connection lines.

Pressure Control

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

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

Advantages

• Precise liquid and gas flow control for process lines and instrumentation systems.
• Tapered needle stem enables gradual and accurate flow adjustment.
• Forged valve body option provides higher mechanical strength and pressure resistance.
• One-piece compact structure helps reduce potential leakage points.
• Suitable for testing, calibration, sampling, purge, and pressure control applications.
• Applicable to high-pressure or high-temperature service, depending on material and sealing selection.
• Multiple material options can be selected for different media and operating conditions.