Advantages of Air Operated Diaphragm Valve Features of Air Operated Diaphragm Pump

The pneumatic diaphragm control valve has a simple structure, small flow path resistance, larger flow force than other valves of the same caliber, no leakage, can be used for the adjustment of high viscosity and suspended particle fluids, according to the different diaphragm materials (rubber or PTFE) is suitable for adjusting strong alkali and strong corrosive media. It is composed of a pneumatic diaphragm regulating valve and a regulating valve actuator. The "mountain" shaped protruding surface between the diaphragm and the valve body is sealed, isolated from the outside world (no stuffing box), especially suitable for corrosion-resistant and highly toxic occasions.

The pneumatic diaphragm control valve has a modular design and can be combined with a variety of accessories.

There are 4 major design features of the pneumatic diaphragm control valve.

1. The pneumatic diaphragm control valve adopts a light actuator, and the height and weight can be reduced by 30%.

2. The inner surface of the pneumatic diaphragm regulating valve is coated with a variety of materials to avoid direct contact with the medium and withstand the corrosion of the corrosive medium of the strong valve.

3. When the pneumatic diaphragm control valve is closed, the internal and external leakage is zero, which is especially suitable for highly toxic media or valve sections that do not allow polluted media.

4. The flow path is simple, the resistance is small, the rated flow coefficient is larger than that of a single seat of the same caliber, and the sleeve control valve is larger.

Go to Anyimai and have a look, it should be able to help you.

Advantages: The biggest difference between the pneumatic rubber-lined diaphragm valve and other valves is that it adopts the structure without stuffing box; The rubber diaphragm can make the corrosive medium in the flow channel completely isolated from all the driving parts, so as to eliminate the disadvantages of "running, rising, dripping, leaking" and other disadvantages of the usual valves.

Due to the smooth flow path of the diaphragm valve, the flow resistance is small, so a large flow rate can be obtained.

The pneumatic diaphragm valve is a special form of shut-off valve that appeared in the 20s of the 20th century. Its opening and closing parts are a diaphragm made of soft materials, which separates the valve body cavity from the valve cover cavity and the driving parts, so it is called a pneumatic diaphragm valve. The most prominent feature of the pneumatic diaphragm valve is that the diaphragm separates the lower valve body cavity from the upper bonnet cavity, so that the valve stem, disc and other parts located above the diaphragm are not corroded by the medium, eliminating the packing sealing structure, and will not produce medium leakage.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The air-operated diaphragm pump is a centrifugal pump that works on the pneumatic principle. It has the following features:

Good self-priming performance: The pneumatic diaphragm pump can start to suck the medium in a dry state, and can discharge it by itself even if the inhaled liquid contains impurities such as gas, sediment, and solid particles.

Leak-free: The air-operated diaphragm pump uses two diaphragms to separate the liquid and compressed air, so there is no leakage and the medium is not contaminated.

Suitable for all kinds of media: The air-operated diaphragm pump can convey all kinds of chemically corrosive media, high-viscosity liquids, particle-containing media, volatile and flammable liquids, etc.

Low energy consumption: The air-operated diaphragm pump only needs compressed air when working, and does not need additional energy such as electricity or fuel, which has low energy consumption and is environmentally friendly and energy-saving.

Easy maintenance: The air-operated diaphragm pump has a simple structure and easy maintenance, and can quickly replace the diaphragm and liquid contact parts, with low maintenance costs.

High reliability: The air-operated diaphragm pump has no mechanical seals and bearings, which has a long service life and high operational reliability.

In general, the air-operated diaphragm pump has the advantages of wide range of use, simple maintenance, low energy consumption, environmental protection and energy saving, etc., and is a relatively practical pump product.

Pneumatic diaphragm pump: Pneumatic diaphragm pump is a new type of conveying machinery, which is the most novel type of pump in China. Using compressed air as the power source, it can be used to absorb all kinds of corrosive liquids, liquids with particles, and high-viscosity, volatile, flammable and highly toxic liquids.

The air-operated diaphragm pump is available in four materials: plastic, aluminum alloy, cast iron and stainless steel. The diaphragm pump is made of nitrile rubber, neoprene, fluoroelastomer, PTFE and PTFE according to different liquid media.

to meet the needs of different users. It is placed in various special occasions and used to pump a kind of medium that cannot be pumped by conventional pumps, and satisfactory results have been obtained.

Due to the above characteristics of air-operated diaphragm pumps, air-operated diaphragm pumps are gradually invading the market of other pumps in the world since their birth and occupy a part of them. For example, diaphragm pumps in the painting and ceramic industries have occupied an absolute dominant position, while in some other industries, such as environmental protection, wastewater treatment, construction, sewage discharge, and fine chemicals, it is expanding its market share, and has an irreplaceable position for other pumps.

Rongpeng Pneumatic has been focusing on the production of diaphragm pumps for 26 years, and the quality and after-sales are guaranteed.

According to the structural form, diaphragm valves can be divided into six types: house type, DC type, globe type, straight-through gate type, and right-angle type. Many users do not understand the classification and characteristics of diaphragm valves. Here's a brief introduction to this question. Users in need can come to a brief understanding!

1. House type. Roof diaphragm valves are also called ridge diaphragm valves. The fluid resistance of the ridge diaphragm valve is greater than that of the right-angle diaphragm valve, but the sealing area is large and the sealing performance is good, which can be applied to pipelines with high vacuum.

2. DC type.

The difference between the valve of the DC diaphragm valve and other valves is that the valve of the DC diaphragm valve adopts the structure of no stuffing box; The rubber diaphragm completely isolates the corrosive media in the flow path from all drive components. So as to eliminate the usual valve is easy to "run, run, drip, leak" and other drawbacks.

3. Cut-off type.

The structure of the cut-off type is relatively simple, and the manufacturing and maintenance are more convenient. The cut-off sealing surface collapse is not easy to wear and abrasion, and has good sealing and long life. The disc stroke is smaller, the opening and closing time is shorter, and the valve height is smaller.

However, the cut-off type has a large flow resistance. The starting and closing torque is large, and the opening and closing are more laborious. The direction of media flow is restricted.

4. Straight-through.

The diaphragm material of the straight-through diaphragm valve is commonly made of natural rubber, neoprene, butyl rubber, nitrile rubber, isobutadiene rubber, fluorinated rubber and polyfluoroethylene propylene plastic (F46). The disadvantage of the diaphragm valve is that the pressure resistance is not high, generally within 6kgf cm2 (; The temperature resistance is also limited by the diaphragm, generally only the bending can withstand 60 80, (fluorinated rubber) is not more than 180.

5. Brake type.

The structure of the ram diaphragm valve is very different from the general Zheng dismantling valve, which relies on a soft rubber mold or plastic film to control the fluid movement.

6. Right-angle type.

The right-angle diaphragm valve, also known as the flange diaphragm valve, is a basic one, commonly coded (G41). The body of a right-angle diaphragm valve is lined. The diaphragm valve body lining is designed to give full play to its corrosion resistance.

Pneumatic diaphragm pump is a new type of conveying machinery, is a relatively new type of pump in China, the use of PP PVDF as the pump body material, the use of compressed air, steam, industrial waste gas as the power source, for all kinds of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid, can be pumped out.

1. There is no need to lubricate with oil, even if it idle, it has no effect on the pump, which is a major feature of the pump.

2. No shaft seal, no leakage, spacious flow channel, no shaft seal diaphragm to separate the pumped medium from the moving parts of the pump, the working medium is completely separated, and the conveyed medium will not leak outward. Therefore, when pumping toxic, volatile or corrosive media, it will not cause environmental pollution and endanger the height viscosity of people (viscosity can reach 10,000 centipoise).

3. The head is up to 50m, the electric pump is up to 30m, and the outlet pressure can be reached. The head and flow rate can be adjusted steplessly through the opening of the air valve, and the air pressure can be adjusted between 1-7kgf cm2. The electric pump does not have this function, and the import needs to be controlled by a regulating valve.

4. There is no need for irrigation and diversion, strong self-priming ability, suction stroke up to 7m, dry breathing for a long time, and no damage to the pump. Once the load is overloaded, the pump will automatically shut down, and when the load returns to normal, it can automatically start running, with self-protection function (electric pumps do not have this function).

5. It does not require power supply, and is more suitable for medium transportation in flammable and explosive occasions. The wide flow shelter and good passing performance allow the QBY pneumatic diaphragm pump to pump both flowing liquids and some media that are not easy to flow, with many advantages of conveying machinery such as self-priming pumps, submersible pumps, mud pumps and impurity pumps.

6. It can be immersed in the medium to work, and there is no power supply to pass through, which is more reliable.

7. The structure is simple, the wearing parts are few, the pump has a simple structure, easy installation and maintenance, and the medium conveyed by the pump will not contact the moving parts such as the distribution valve and the connecting rod, unlike other types of pumps due to the wear and tear of the rotor, piston, gear, blades and other components, and the performance gradually declines.

8. The pneumatic diaphragm pump is easy to use, reliable to work, the pump only needs to simply open and close the gas valve, even if it runs without medium for a long time or suddenly stops due to unexpected circumstances, the pump will not be damaged, once overloaded, the pump will automatically shut down, with self-protection performance, and when the load returns to normal, it can automatically start running.

9. No rotating parts, good passing performance, allowing the diameter of particles to pass up to 10mm. The liquid flows without shear, the wear of the pump's own parts is small, the damage to the conveyed material is small, and the sludge can be transported.

10. The pneumatic diaphragm pump is made of PP, which has the characteristics of being resistant to various corrosive liquids, small size and light weight.

Can be dry suction, can be idling.

Can work by submersion in media.

Explosion-proof, can be used in flammable, explosive places.

The structure is simple, easy to install and maintain, and there are few wearing parts.

Diaphragm pumps with different materials and different diaphragms can be selected according to different working conditions.

It can be adjusted, the head, the flow rate can be adjusted by the air pressure.

Low shear, good through-performance, can pump particles, viscous liquids.

There is no need to irrigate water, the suction lift is up to 7 meters, and the head can reach 70 meters.

The pump uses compressed air as a power source, so it does not heat up and affect the medium.

There is no shaft sealing device, so there is no need to worry about leakage.