Zhejiang NIUMAIDI Automatic Control Equipment Co., Ltd.

About us

ABOUT US

ABOUT NIUMAIDI

Specialized in Pneumatic Actuators, Delivering Usable, Trustworthy and Reliable Fluid Control Solutions for Global Industries

The company has deep‑rooted expertise in the industrial automation sector, focusing on the R&D and manufacturing of core products. Its business scope covers manufacture of pneumatic power machinery and components, industrial automatic control system devices, intelligent instruments and meters, general valves and cocks (excluding special‑equipment manufacturing), fluid‑gas‑hydraulic components and systems, as well as hardware products. With a diversified product portfolio, it addresses automation fluid control and supporting requirements for customers across various industries.

PRODUCT CENTER

Our products are built for demanding operating conditions

Our business covers manufacturing of pneumatic power machinery & components, industrial automatic‑control system devices, intelligent instruments and meters, general valves and cocks (excluding special‑equipment manufacturing), fluid‑gas‑hydraulic components and systems, and hardware products. With a diversified product portfolio, we satisfy automation fluid control and supporting needs for customers from various industries.

AT‑Series Pneumatic Actuator

AT SERIES PNEUMATIC ACTUATORS

The AT‑series pneumatic actuator adopts a new‑type rack‑and‑pinion transmission mechanism. It is innovatively designed based on extensive field installation and product application experience, integrating the latest pneumatic actuator technologies and applied materials.

AT‑Series Pneumatic Actuator

3‑Position Pneumatic Actuator

The three‑position pneumatic actuator is a special‑specification actuator, which provides three‑position operation modes of 0°, 45°, 90° or 0°, 90°, 180°.

3‑Position Pneumatic Actuator

Diaphragm‑type Fluorine‑lined Control Valve

The diaphragm‑type fluorine‑lined control valve adopts pneumatic diaphragm actuation. Its valve body is lined with fluoroplastic to resist various highly corrosive media. It adjusts the opening degree according to control signals to precisely regulate medium flow and pressure. It is mostly used in pipelines under corrosive working conditions such as chemical processing and pickling.

Diaphragm‑type Fluorine‑lined Control Valve

Pneumatic Control Valve

The pneumatic control valve takes compressed air as power source. It receives control signals to adjust valve opening, so as to precisely regulate the pressure, flow rate and temperature of pipeline media. When matched with a positioner, it achieves a high level of automation, and is widely applied in process pipelines of petroleum, chemical and thermal industries.

Pneumatic Control Valve

Self‑operated Control Valve

The self‑operated control valve requires no external air supply or power supply. Driven by the pressure of the process medium itself, it automatically stabilizes pressure, pressure differential or temperature. With simple structure and easy installation & maintenance, it is widely deployed in heating, gas and water supply‑drainage systems to stabilize pipeline working conditions.

Self‑operated Control Valve

Pneumatic Ball Valve

Actuated by a pneumatic actuator, the pneumatic ball valve rotates the ball to achieve rapid media shut‑off in pipelines and supports remote automatic control. It features low flow resistance and reliable sealing. Multiple valve‑body materials and connection types are selectable according to working conditions. It is widely applied in automated pipelines of chemical, gas and water‑treatment industries.

Pneumatic Ball Valve

3‑Piece Butt‑Weld Ball Valve

The 3‑piece structure consists of three combined valve‑body segments with butt‑weld connection, enabling easy disassembly, assembly and maintenance. It delivers high pressure‑bearing capacity and reliable sealing performance. It is commonly used in high‑temperature and high‑pressure pipelines for petroleum and chemical industries to transport media such as oil products and gas.

3‑Piece Butt‑Weld Ball Valve

3‑Way Ball Valve

The 3‑way ball valve is equipped with three ports. It changes the medium flow direction by rotating the ball to realize flow splitting, mixing or flow diversion. It is available in two port configurations: L‑type and T‑type. It is frequently used for process switching in chemical, HVAC and fluid pipelines.

3‑Way Ball Valve

Manual Ball Valve

The manual ball valve realizes pipeline shut‑off by directly rotating the ball via a handle. It features simple structure, quick operation and low flow resistance. Available in multiple materials such as stainless steel and cast steel, it is widely used for manual media shut‑off in water supply‑drainage, oil‑gas and chemical pipelines.

Manual Ball Valve

Italian Type SS Wafer Ultra-thin Pneumatic Quick Cut Ball Valve

Adopting wafer‑mounted ultra‑thin construction, the Italian‑style pneumatic ball valve features compact and lightweight stainless‑steel valve body with good corrosion resistance. Driven by pneumatic actuator, it delivers fast response. Designed mainly for emergency quick shut‑off of pipelines, it occupies little installation space and is widely used in automated oil‑gas and fluid pipelines.

Italian Type SS Wafer Ultra-thin Pneumatic Quick Cut Ball Valve

High‑platform Metal‑seated Ball Valve

The high‑platform metal‑seated ball valve is equipped with an integrated high platform on the valve body. Electric or pneumatic actuators can be mounted directly without additional brackets. Its metallic sealing pair offers resistance to high temperature, high pressure, wear and erosion. Suitable for steam, oil products and high‑temperature process media, it is widely used for quick shut‑off in petrochemical and thermal pipelines.

High‑platform Metal‑seated Ball Valve

Rubber‑lined Butterfly Valve

The rubber‑lined butterfly valve features a rubber lining inside its valve body, delivering favorable corrosion resistance and sealing performance with an economical price. Suitable for clean water, sewage, weak acid and weak alkali media, it is widely applied in municipal water supply‑drainage and sewage treatment pipelines for medium shut‑off and throttling control.

Rubber‑lined Butterfly Valve

Electric Butterfly Valve

The electric butterfly valve relies on an electric actuator to rotate the disc, realizing pipeline media shut‑off or flow regulation. It features fast opening‑closing and convenient remote electric control with a complete range of sizes. Widely used in water supply & drainage, HVAC, chemical and other industries, it can be equipped with soft‑seated, metal‑seated and fluorine‑lined sealing structures to adapt to diverse working conditions.

Electric Butterfly Valve

Wafer‑type Metal‑seated Butterfly Valve

The wafer‑type metal‑seated butterfly valve adopts wafer mounting style. Its sealing pair is made of metallic material, delivering high temperature resistance, high pressure resistance and wear resistance with excellent sealing performance. Suitable for working conditions such as steam, high‑temperature flue gas and oil products, it is widely used in metallurgy, thermal power and petroleum pipelines for media shut‑off and throttling.

Wafer‑type Metal‑seated Butterfly Valve

Pneumatic Fluorine‑lined Butterfly Valve

Driven by a pneumatic actuator, the pneumatic fluorine‑lined butterfly valve has fluoroplastic lining on both the valve body cavity and disc surface. It resists highly corrosive media including strong acids, strong alkalis and strong oxidants. Featuring compact structure and fast opening‑closing action, it is widely used in anti‑corrosion pipelines for chemical, pharmaceutical and environmental‑protection industries for fluid shut‑off and throttling.

Pneumatic Fluorine‑lined Butterfly Valve

Positioner

A valve positioner is a core control component of a control valve. It receives an electrical signal (4–20 mA) from the control system and outputs a pneumatic signal to drive the valve actuator, thereby precisely controlling the opening of the valve plug.

ZSA Pneumatic Piston Linear‑stroke Actuator

ZSA 系列执行器分单作用、双作用两种类型。单作用采用多弹簧式，由于它供气压力大于薄膜执行机构，故输出力较大，通常用于高压或压差较大的调节阀及切断阀等场合。

ZSA Pneumatic Piston Linear‑stroke Actuator

HA Pneumatic Diaphragm Linear‑stroke Actuator

The HA‑series pneumatic actuator adopts a multi‑spring structure, featuring light weight, small size, compact structure and large output force.

HA Pneumatic Diaphragm Linear‑stroke Actuator

EXPLORE PRODUCTS

Providing Reliable Pneumatic Actuator Solutions for Industries Worldwide

Covering core sectors such as petrochemicals, power and energy, environmental protection and water treatment, and general industry, we provide high-temperature-resistant, corrosion-resistant, and high-precision fluid control and automation solutions.

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