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Needle Valve
Needle Valve
Needle Valve
Needle Valve

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Next: Plug Valve

Needle Valve

A needle valve is a high-precision valve used for accurate regulation of very small flow rates. Its core design features a slender tapered valve core (needle-shaped) that fits precisely with the valve seat to achieve fine fluid control. It is mainly applied in laboratory instruments, hydraulic systems, gas regulation, and high-precision industrial processes. Domestic design standards include JB/T 7747, or it can be designed according to ASME B16.34 or GB/T 12224.
Size:
NPS1 and below.
Material:
Body material as per customer order; forged steel.
Internal Parts/Stem:
Structure:
Globe valve type with needle-shaped disc.
Operation Mode:
Manual, electric, etc.
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The previous: Knife Gate Valve

Next: Plug Valve

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Bellows Seal Valve

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For applications with extremely strict sealing requirements—such as toxic, flammable, explosive, or highly corrosive media—bellows seals are employed. Both gate valves and globe valves can be designed with bellows sealing. Their design incorporates a dual sealing structure of bellows combined with packing to ensure zero leakage. The previously mentioned standards for gate and globe valves apply here, along with additional reference to bellows valve standards such as MSS SP-117, GEST 89/140, JB/T14315, and JB/T11150.
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Plug Valve

Plug Valve

A plug valve is a valve that controls fluid flow or regulation by rotating a valve core (plug). Its core structure is simple and provides reliable sealing, making it suitable for high-viscosity, particulate-containing, or corrosive media conditions. It is widely used in industries such as petroleum, chemical, and food processing. MECCO plug valves are designed and manufactured according to API 6D, API 599, GB/T 22130, and other standards, with pressure ratings of CL150, CL300, CL600, CL900, CL1500, CL2500 (or PN16\~PN420).
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Needle Valve

Needle Valve

A needle valve is a high-precision valve used for accurate regulation of very small flow rates. Its core design features a slender tapered valve core (needle-shaped) that fits precisely with the valve seat to achieve fine fluid control. It is mainly applied in laboratory instruments, hydraulic systems, gas regulation, and high-precision industrial processes. Domestic design standards include JB/T 7747, or it can be designed according to ASME B16.34 or GB/T 12224.
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Knife Gate Valve

Knife Gate Valve

Knife gate valves are widely used in mining, metallurgy, chemical, sewage treatment, and food processing fields. They are suitable for media containing solid particles, fibers, or suspensions, especially for handling slurry, ash, and other complex materials. MECCO knife gate valves are designed and manufactured according to ANSI/AWWA C520, MSS SP-81, MSS SP-135, JB/T 8691, and other standards, with pressure ratings of CL150, CL300, CL600, CL900, CL1500, CL2500 (or PN16\~PN420).
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Orbit Ball Valve

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