CE Certification Gear Operated Butterfly Valve - Durable & Reliable Supplier Supplier, Factory

Gear Operated Butterfly Valve – Product Description

A gear operated butterfly valve is a type of quarter-turn valve designed for reliable flow control in large-diameter or high-pressure piping systems. It uses a toothed gear mechanism—usually a worm gear—to actuate the disc, providing mechanical advantage that reduces the effort required to open and close the valve. This makes it ideal for applications where manual lever operation would be too strenuous or impractical.

The valve consists of a circular disc mounted on a rotating shaft; when the gear operator turns the shaft, the disc pivots to either block or allow fluid flow. Gear operators often feature a handwheel, position indicator, and locking device, enabling precise throttling and secure positioning. The enclosed gearbox also protects internal components from dust, moisture, and corrosion, enhancing durability.

These valves are commonly manufactured with bodies and discs in materials such as ductile iron, carbon steel, stainless steel, or aluminum bronze, and can be fitted with soft or metal seats depending on temperature and media requirements. They are widely used in water treatment, power generation, oil and gas, marine, HVAC, and industrial process systems.

Key advantages include smooth operation, excellent shut-off performance, compact design, and long service life. Gear operated butterfly valves are suitable for both on/off isolation and modulating control duties.

Product Description

Turbine operated butterfly valves are crucial components in various industrial systems, offering several distinct advantages over other valve types.

Advantages

Cost-effectiveness

These valves are often more affordable due to their simple design and fewer components. Their manufacturing cost is relatively low, and they also require less maintenance over time, making them an attractive option for large-scale installations where multiple valves are needed.

Compact and Lightweight

Turbine operated butterfly valves have a compact structure and are lightweight. This feature makes them ideal for installations with limited space or where weight restrictions are a concern. Their compactness also simplifies transportation and storage.

Quick Operation

They can be operated rapidly. With a quarter-turn of the turbine, the valve can change from fully open to fully closed or vice versa, enabling efficient and precise flow control. This is especially beneficial in applications that demand frequent adjustments or an immediate response to changing flow conditions.

Low-Pressure Drop

The streamlined design of the butterfly valve disc allows the flowing medium to pass with minimal pressure drop. This characteristic reduces energy consumption, as less energy is required to push the fluid through the valve. It also helps maintain system performance and can minimize the need for additional pumping power.

Good Sealing Performance

Many turbine operated butterfly valves are designed with high-quality sealing materials, such as rubber or PTFE. This ensures a tight shut-off when the valve is closed, preventing leakage and ensuring the integrity of the system.

Specifications

Nominal Diameter

Turbine operated butterfly valves are available in a wide range of nominal diameters, typically from DN50 to DN2000. This wide size range makes them suitable for use in small-scale and large-scale pipelines.

Nominal Pressure

They can withstand different nominal pressures, commonly ranging from 0.6MPa to 1.6MPa. However, valves with higher pressure ratings are also available for specific applications.

Temperature Range

The applicable temperature range varies depending on the materials used in the valve construction. Generally, they can operate in temperatures from -20°C to +150°C. Special materials may extend this range for high-temperature or low-temperature applications.

Body Materials

The valve body can be made from various materials, including cast iron, ball-ductile iron, cast steel, and stainless steel. Each material has its own properties, such as corrosion resistance and strength, making them suitable for different media and operating conditions.

Drive Modes

In addition to turbine operation, they can also be equipped with manual, electric, or pneumatic actuators, providing flexibility in operation according to the requirements of the system.

Market Applications

Water and Wastewater Treatment

Turbine operated butterfly valves are widely used in water supply systems to control the flow of clean water. In wastewater treatment plants, they are used to manage the flow of sewage and sludge. Their ability to handle large volumes of fluid with low-pressure drop makes them suitable for these applications.

HVAC Systems

In heating, ventilation, and air-conditioning systems, these valves are used to regulate the flow of air and water. Their quick operation and precise flow control capabilities help maintain comfortable indoor environments.

Chemical and Petrochemical Industries

Due to their corrosion-resistant body materials and good sealing performance, they are used in the chemical and petrochemical industries to control the flow of various chemicals, gases, and oils.

Power Generation

In power plants, whether thermal, hydro, or nuclear, turbine operated butterfly valves are used in water-steam cycles, cooling water systems, and fuel handling systems. They play a crucial role in ensuring the efficient operation of power generation equipment.

Food and Beverage Industry

In this industry, where hygiene and cleanliness are of utmost importance, the smooth-surfaced and easy-to-clean design of these valves makes them suitable for controlling the flow of food-grade fluids.

In conclusion, turbine operated butterfly valves, with their numerous advantages, diverse specifications, and wide-ranging market applications, are an essential part of modern industrial infrastructure.

Dimensions & Engineering Data

DIMENSIONS in(mm) [DN50 - DN300]
Size A B C2 D E F KxK Top PCD Plate HOLE N-Dia
DN501407010541903011x11704-θ9
DN651527611744903011x11704-θ9
DN801599113044903011x11704-θ9
DN10017810216251903014x14704-θ9
DN12519111918754903014x14704-θ9
DN15020313321654903017x17704-θ11
DN200241170271641253017x171024-θ11
DN250273210330641253022x221024-θ11
DN300308243376761253022x221024-θ11
DIMENSIONS [DN350 - DN600]
Size A B C2 D E F K SxS/d Top Plate Data PCD
DN350413267451508052547022x22125
DN400451309451759058552527x27140
DN4504673184517510965058527x27140
DN5005253504517512772065036x36140
DN6006074104521015485077036x36165
PN10 Specifications [DN700 - DN1000]
SizeABCLфDфKNxфd4xMфEфFa°GHOPфRWeight(Kg)
DN70078458116316989584024xф31/74169515355146146228400361
DN800832655188195101595024xф34/847794.715355146146228400444
DN9009747452032111115105024xф344xM30943864.712.857377170170243450660
DN100010548032162241230116024xф374xM331049965.712.857377170170243450830
PN16 Specifications [DN700 - DN1000]
SizeABCLфDфKNxфd4xMфEфFa°GHOPфRWeight(Kg)
DN70078458116316991084020xф374xM3374169515355146146228400396
DN800926655188195102595020xф404xM36847794.715377170170243450573
DN9009747452032111125105024xф404xM36943864.712.857377170170243450690
DN100011108032162241255117024xф434xM391049965.712.8574761802503024501025

Frequently Asked Questions

What is the primary function of a turbine operated butterfly valve?
It is designed to regulate or completely isolate the flow of fluid through a pipeline using a rotating disc mechanism operated via a gearbox (turbine), allowing precise flow control with minimal pressure loss.
What are the advantages of using a turbine operator instead of a lever?
Turbine (gear) operators provide higher mechanical advantage, making it easier and safer to open and close large-diameter valves or valves in high-pressure pipelines where manual lever operation requires excessive effort.
Which materials are available for the valve body?
Depending on the chemical composition of the media and installation requirements, bodies are typically manufactured from cast iron, ball-ductile iron, cast steel, and various grades of stainless steel.
What standard sizes and pressure ratings do these valves cover?
Sizes generally range from DN50 up to DN2000, supporting standard nominal pressure classes from 0.6MPa to 1.6MPa (PN10/PN16), with higher custom ratings available upon request.
Can alternative actuation methods be fitted to these valves?
Yes, beyond manual turbine operators, the top mounting plates are designed to be compatible with standard electric, pneumatic, and hydraulic actuators for automated control.

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