ÃÛÌÒÓ°Ïñ

enLanguage
Home / Products / Pneumatic Valve / Pneumatic Butterfly Valve

Pneumatic Butterfly Valve

Your Leading Electric Actuator Manufacturer and Supplier in China!
1. Professional Team

We not only have a young & passionate sales team available 24/7 to serve you, but also a well experienced technical team to help you solve any technical challenges in Valve Automation Solutions.

2. Advanced Equipment

We have high-precision CNC machining Center and 6 product line for ensuring the stability and reliability of product quality.

3. Rich Experience

Our workshop is an efficient and well-organized workspace, equipped with modern equipment and skilled technicians. Regular equipment maintenance and upkeep are conducted to ensure seamless production processes.

4. CE/SIL/ATEX/EAC Certified Products

We ensure excellent product quality through rigorous quality control, high-quality materials and manufacturing processes, as well as a focus on customer requirements.

First 12 Last 1/2

What is a Pneumatic Butterfly Valve?

 

 

A pneumatic butterfly valve is a control valve that uses compressed air or gas pressure to regulate the flow of gas or liquid. It's a type of quarter-turn valve that's named after its butterfly-shaped disc. The disc rotates on an axis to open or close the valve.

 

Working Principle of Pneumatic Butterfly Valve

 

It is composed of the connection of pneumatic actuator and butterfly valve. The pneumatic butterfly valve drives the actuator to drive the circular butterfly plate to do 90° rotation movement through compressed air into the pneumatic actuator, so as to be used as the pipeline switch and flow regulation.

 

The Main Advantages of Pneumatic Butterfly Valves

Pneumatic Three-Way High Pressure Explosion Ball Valve

Easy to Install

Small and lightweight, easy disassembly and maintenance. They can be installed in any position.

Three-Piece Ball Valve

Compact Design

Simple and compact structure. Small operating torque. Quick 90 degrees rotating opening

Electric Actuator Ball Valve

Good Performance

The flow characteristics are of a straight line. The regulating performance is good.

Odl Electric PVC Plastic Ball Valve

No-pin Structure

The connection between butterfly plate and valve stem uses the no-pin structure, overcoming the possibility of any internal leakage point.

Pneumatic Wafer Butterfly Valve

Long Lifespan

The outer sphere of the butterfly valve uses a spherical shape, improving the sealing performance and prolonging the valve's service life. Opening and closing under pressure more than 50000 times still remain zero leakage.

Electric Modulating Valve Actuator

Two-way Sealing

The sealing item can be replaced. The sealing is so reliable that two-way sealing can be achieved.

 

Types of Pneumatic Butterfly Valves

Single Seat Pneumatic Butterfly Valve

The single seat pneumatic butterfly valve is the most common type of this type of valve. It features a disc that moves linearly over a seal on a seat. This design relies on an actuator to control pressure and flow rate. It is best suited for controlling low-pressure steam or water applications, as it has limited adjustability. These valves are often made from durable materials like stainless steel and aluminum, ensuring they can withstand wear over time without losing performance or efficiency. Additionally, its linear motion requires minimal force to open and close, making it easy to operate effectively with minimal effort or maintenance.

Double Seated Pneumatic Butterfly Valve

Double seated pneumatic butterfly valves feature an additional mobile seal installed in the cavity along with the first seal. This extra layer of protection allows for precise regulation of pressure and flow rate according to user preferences. The two seals work together to prevent movement or leakage when the valve is closed, while the pressure can still be adjusted by tightening one of the seals. This design also offers more stability than single seat valves and is good for applications with extreme temperature or pressure ranges. It's generally made from durable materials like stainless steel, ensuring it can handle high-pressure scenarios without wearing out quickly.

Triple Offset Pneumatic Butterfly Valve

Triple offset pneumatic butterfly valves are a specialized type of valve used in high-pressure applications. This design features an offset disc with three seals, allowing it to remain tightly sealed even when faced with extreme pressure or temperature changes. The unique geometry of the triple offset valve allows it to handle intense conditions without being prone to leakage or damage. Additionally, this valve requires less maintenance and its performance is more consistent than other types of valves. It's a great choice for handling heavy-duty industrial operations where precision and reliability are essential.

High Performance Pneumatic Butterfly Valve

High performance pneumatic butterfly valves are designed for superior durability and reliability in demanding applications. Featuring specialized seals that can handle high-pressure conditions without leakage, these valves are a great choice for operations with extreme temperature or pressure ranges. The valve's tight sealing capabilities also reduce the risk of hazardous material spills, ensuring employee safety in hazardous environments. With their superior design, high performance pneumatic butterfly valves can last multiple times longer than regular valves while still providing accurate control over the process flow rate and pressure.

 

Components of a Pneumatic Butterfly Valve

 

Body

The body is the part that holds all the other parts of a pneumatic butterfly valve. The body is made of very strong metallic materials like carbon steel and stainless steel to ensure high strength. However, there are special category of these valves that are made of wholly plastic materials. The body contains holes to hold bolts used to connect the valve to the pipe.

Pneumatic actuator

This is the part that provides the torque used to open and close the valve. The actuator is connected to the valve disc via the stem. When the actuator turns the stem, the disc turns simultaneously allowing or blocking fluid flow.

Stem

This is the part of a pneumatic butterfly valve that connects the valve disc and the actuator. The stem helps to transmit torque from the actuator to the disc to make the valve open or closed.

Disc

This is the component of a pneumatic butterfly valve that is responsible for starting and stopping fluid flow.

Seat

This component helps to prevent fluid leakage when the valve is closed. The seat serves to provide a surface where the disc seats when the valve closes.

Gasket

This is a component placed between the pipe and valve mating surfaces to prevent fluid leakage between the connections. The gasket is made of different materials depending on working temperature and type of fluid.

 

Our Certificate
201903131647139906681
CE EX for valve actuator
201904150943378510703
ISO9001:2015
201903131647398225081
ODL OHQ CE
201903131650059492132
SIL-3 for valve actuator 01

 

 
Our Factory
20230913160246b8e3bf8d70564e319a890378eb55a5c2
2023091317424213d4eb8020e6402082f123c265716487
20230913160302115959621de240e5a2378f1ea9e0f347
202309131743179651752a3dcd41669ce47c229ad69e08

 

Ultimate Guide for Pneumatic Butterfly Valve

Q: What are structural features of pneumatic butterfly valves?

A: Pneumatic actuator uses new-style AT pneumatic actuator, with double-acting and single-acting types (spring reposition), driven by gear and rack with high dependability. big diameter valves are driven by AW pneumatic actuator in a pull-extraction manner, with reasonable structure and are large output torque as well as double-acting and single-acting type (spring reposition).

Q: Where can you find butterfly valves?

A: Lightweight butterfly valves are mostly found in water lines and potable water control services. Other light-duty valves such as PVC butterfly valves can be used for aquariums and sprinkler systems. Some general butterfly valves are also meant for fuel flow control.

Q: How often should a pneumatic butterfly valve be serviced?

A: The frThe frequency depends on the valve's type, size, and application. In general, most valves should be inspected at least once a year.equency depends on the valve's type, size, and application. In general, most valves should be inspected at least once a year.

Q: How long do pneumatic butterfly valves last?

A: Pneumatic butterfly valves can last 10 years to over 100 years. This depends on how they are maintained, what type they are made of, and how often they are used.

Q: How to open or close a pneumatic butterfly valve?

A: Turn the handle partway to open the valve. To close the valve, turn the handle perpendicular to the stem.

Q: What are the benefits of using a pneumatic butterfly valve?

A: Butterfly valves offer great benefits over other types of valves, including their compact design, cost-effectiveness, and flexibility. These valves are small and lightweight yet highly efficient when controlling flow rates. They also require minimal maintenance due to the adjustable seal which increases its accuracy when controlling flows. Furthermore, butterfly valves are relatively easy to install and operate, making them ideal solutions for a wide range of applications in diverse industries such as agricultural equipment manufacturing and oil production. Additionally, they can be configured with various levels of pressure control depending on the type of valve and installation, offering further benefits from an operational standpoint.

Q: What types of industries use butterfly valves?

A: Butterfly valves are versatile, durable and cost-effective solutions for a wide range of industries. In the chemical industry, pneumatic butterfly valves are used to control process flow and regulate temperature, pressure, and other variables. In the food processing industry, they are used to ensure safe product packaging. They are also employed extensively in industrial air conditioning applications such as cooling towers and heat recovery systems. Other industries that make use of these valves include power plants, oil refineries, manufacturing facilities, HVAC systems and pharmaceuticals.

Q: Are there different sizes and designs available when it comes to butterfly valves?

A: Butterfly valves are available in a variety of sizes and designs to meet the needs of different industries. Standard butterfly valves come in sizes ranging from 2-inch butterfly valve up to 80 inch. There are also specialized types such as full port, high capacity and low torque which provide solutions for unique applications. These valves can also be made from different materials such as cast iron, stainless steel and PVC depending on the application they will be used for. Additionally, certain types of butterfly valves are designed with adjustable trim components which enable them to work even better under specific circumstances such as higher temperature or pressure levels.

Q: What to consider when choosing butterfly valves?

A: Type of Fluid
The next step is to identify the kind of liquid or substance circulated through the system. Butterfly valves generally can handle gasses and liquids; however, they cannot accommodate bulk solids. Find out the characteristics of the media. It may be corrosive, which means it requires the valve body to be made of stainless steel as well as the disc. But, you can utilize carbon steel or less expensive alloys for common fluids such as water.
Once you know the kind of fluid, you will select the operation mode that the valve will operate. Manufacturers and suppliers typically have various options in this regard.
The choice will be based on the area of the valve, its application, price, and the frequency at which you must switch off and on the valve. Mode of Installation
Then, be aware of whether you need to flange the valve on both ends or if you need to weld it or screw it between two pipes.
Once you have gathered this information, you will be able to identify the technical specifications for the butterfly valve you are installing as aligned with the manufacturer or the supplier.
Capacity
The capacity is the flow rate or the rate the material can pass through. This also includes the safety of the internal pressure capability for the valve. Be sure to verify the specifications for the butterfly valve to ensure you purchase the right valve for your system requirements.
Level of Precision
Every valve manufactured by a company has specifications that define the leakage quantity or volume. It also specifies the shut-off specifications, the passageway’s length, and the amount of fluid it can hold when fully open.
Operating Life
Typically, you will find the operational life of the valve in its specifications sheet. In general, butterfly valves offer lower maintenance requirements and still provide a tight, bubble-free shut-off.
Pressure Drop
Pressure drop is an essential aspect to consider when selecting the appropriate valve to suit your particular needs. It defines the variation in pressure between the outlet and the inlet of the butterfly valve.

Q: How to maintain pneumatic butterfly valves?

A: ¡ñEnsure that the working conditions and environment meet the specified requirements. Take precautions to prevent the entry of impurities such as water and oil into the actuator or valve, as they can reduce the valve's lifespan. Regular maintenance is essential, including the addition of lubricating oil and the removal of surface dirt and dust.
¡ñDuring installation, follow the appropriate connection method to attach the valve directly to the pipeline. In most cases, it can be placed at any position within the pipeline but should be easily accessible for maintenance. Note that when using a shut-off valve, the medium flow should be directed upwards from the vertical valve disc.
¡ñWhen utilizing a pneumatic butterfly valve, be aware that it should only be fully opened or fully closed. Attempting to use it for flow rate adjustments can lead to erosion and increased wear of the sealing surface.
¡ñIn case of disassembly, take care to protect the valve body's sealing surface from damage caused by collisions or scratches. If any abnormal issues arise, preventing normal operation, shut off the air supply and the medium to identify the cause. The valve can be used again after successful testing.
¡ñWhen opening and closing the pneumatic butterfly valve, use the handwheel. Avoid using levers or other tools to prevent valve damage. Turn the handwheel clockwise to close the valve and counterclockwise to open it.
¡ñFor long-term storage, ensure the valve is stored in a well-ventilated and dry location. When storing the pneumatic butterfly valve, close and block both ends of the passage to prevent damage caused by moisture or extended exposure to the elements.

We're known as one of the most professional pneumatic butterfly valve manufacturers and suppliers in China, providing high quality products with competitive price. Please be free to buy durable pneumatic butterfly valve in stock here from our factory. For pricelist and quotation, contact us.

Pneumatic Double Eccentric Butterfly Valve, Pneumatic PVC Butterfly Valve, Pneumatic Stainless Steel Butterfly Valve

(0/10)

clearall