Precision Needle Valve Fine Metering Stainless Steel for Oil Gas Laboratory Industrial Suppliers and Manufacturers

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Needle Valve

A needle valve is a micro valve with a fine pointed needle shaped valve core (usually a cone) used to precisely regulate the flow and pressure of fluids such as gases or liquids. Its core function is to change the gap between the valve core and the valve seat by rotating the valve core, achieving the opening, closing or fine flow control of the flow path, especially suitable for low flow and high-pressure environments. The main features include high adjustment accuracy, good sealing, and high pressure resistance, which are widely used in flame cutting temperature adjustment, instrument systems, laboratory equipment, and industrial control scenarios.

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Maintain convenience
Safety adaptability
Corrosion resistance and wear resistance
Compact structure optimization
High pressure sealing reliability
Ultra precision flow regulation

Maintain convenience

01
Modular valve core component
The integrated valve disc stem structure only requires replacement of vulnerable parts after damage, reducing maintenance costs by 70%.
02
Tool free disassembly design
The card sleeve type connection structure can be quickly disassembled without the need for specialized tools.

Safety adaptability

01
Fire and Explosion Proof Certification
Compliant with API 607 fire protection standard, the valve stem anti flying structure avoids the risk of high pressure impact.
02
Multi condition compatibility
Supports a temperature range of -196 ℃ to 450 ℃, suitable for extreme media such as liquid oxygen and high-temperature steam.

Corrosion resistance and wear resistance

01
Preferred anti oxygen corrosion material
The valve body is made of 316 stainless steel and nickel based alloy, which is resistant to acid and alkali corrosion (pH 2-12) and extends the service life of chemical media scenarios.
02
Mirror polishing channel
The surface roughness Ra of the inner cavity is ≤ 0.4 μ m, reducing particle adhesion and preventing medium contamination.

Compact structure optimization

01
Angular channel design
The right angle valve body saves 90 ° elbow space and is suitable for narrow environments such as ship engine compartments and aviation hydraulic systems.
02
Lightweight valve body
The weight of the stainless steel valve body is 60% lighter than that of the same specification gate valve, reducing the support load of the pipeline.

High pressure sealing reliability

01
Hard sealing structure
The surface of the valve disc is plated with hard chromium or welded with cobalt based alloy, with a sealing surface hardness of HRC50 or above, a maximum pressure resistance of 32MPa (PN320), and a leakage rate of ≤ 10 ⁻⁶ cc/s.
02
Multiple sealing design
The double sealing structure of corrugated tube and graphite packing prevents valve stem leakage and is suitable for flammable and explosive media.

Ultra precision flow regulation

01
Micron level adjustment accuracy
Needle shaped valve core (cone angle usually 2 ° -15 °) combined with fine threaded valve stem (pitch 0.5-1mm), the displacement accuracy of the valve core reaches 0.01mm, achieving micro flow control of 0.1-10L/min, suitable for laboratory instrument and meter calibration.
02
Linear flow characteristics
The clearance between the conical surface of the valve core and the valve seat varies linearly, ensuring stable regulation under low flow conditions (such as precise control of flame cutting temperature).

Valve Application

Oil & Gas Transportation

Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
Chemical Raw Material Control

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High Temperature SteamPipeline in Power System

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Other Industries

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.