Air diaphragm pumps are used in the facilities are used in facilities of all sizes, and in a variety of different industries. From petrochemical to food and beverage, these pumps are popular and versatile. Their unique design is ideal for transferring highly abrasive or viscous products. But what we need to think when we select Pneumatic diaphragm pump?   Application What application will the pump be used in? What are you pumping? Do you need lube free operation? What are your performance parameters(capacity, head, air consumption, viscosity, suction lift)? Do i need a pulsation dampener?   Air Distribution System(ADS) What ADS best suits my application needs? How reliable is the ADS? Dose the ADS have anti-freezing technology? Dose the ADS have intergrated variable performance controls?   Installation Before installation pls read the caution section of the pump manual. What are your piping considerations(valves,elbows, pipe friction losses etc)? Do you have su...

Diaphragm pumps, also known as air-operated diaphragm pumps (AODD pump), are positive displacement pumps that operate using compressed air to compress and expand the diaphragm, creating a suction and discharge action that moves fluids. These pumps are ideal for handling viscous or abrasive fluids, including oils, chemicals, and sludge. They are also versatile and can be used in various industries, such as chemical processing, food and beverage, mining, and wastewater treatment.   We offer a wide selection of diaphragm pumps，Our AOK series diaphragm pumps are same as USA GRACO diaphragm pump which can be interchanged with same performance, with high quality.    We are professional diaphragm pump manufacturers in China. We have Aluminum, SS304,SS316, Plastic & PVDF pump body. and about diaphragm material, we have Teflon, Santoprene, Hytrel, Viton, Buna-N. The inlet&outlet size from 1/4-3inch, Max. Flow rate is 1060L/min, the Max. Head is 8.4bar. The pump perfo...

There are many different types of pumps on the market. Not sure whether to choose a centrifugal pump or diaphragm pump? What to consider before selecting a pump?   Both diaphragm pumps and centrifugal pumps transfer fluids from inlet to outlet valves at controlled degrees of pressure and quantities. What makes these pumps differ is the method in which the fluid is transferred as well as the viscosity of the fluid that can be moved and the required suction lift. These variables need to be taken into consideration before selecting a pump. What differences of Centrifugal pump and diaphragm pumps?   1. Working Mechanisms Centrifugal pump use impellers that draw the fluid in at increased velocity, which assists in moving the fluid from the inlet to the outlet valve. Diaphragm pumps, on the other hand, use a flexible diaphragm that moves back and forth to create a pressure differential that moves fluid through the pump. When the diaphragm moves in one direction, it creates a v...

A Diaphragm Pump is a type of Positive Displacement Pump. that uses a set of two internal diaphragms, either made from PTFE or rubber, that work simultaneously to create pressure to push fluid through the pump. The diaphragms operate the internal valves on the side of the pump which help to control flow direction and fluid quantity being transferred to the discharge outlet. DEFU Diaphragm Pumps are able to self-prime up to 5m from a dry suction pipe or 8m from a wetted pipe. We have Plastic diaphragm pumps,Stainless steel diaphragm pumps and Aluminum diaphragm pumps.   Diaphragm Pumps are one of the most common and effective pumps on the market today, offering the ability to pump high volumes at low pressures, and robustness to withstand a variety of applications.    Today i want to share how to change the diaphragm.                   To service the diaphragms first shut off the suction, then shut off the d...

Diaphragm pumps are positive displacement pumps commonly used in wet commercial pumping applications. Air diaphragm pumps run on compressed air and move slurries, solvents, and other high-viscosity liquids.   Selecting the right Air Diaphragm Pump for your operation involves the consideration of several key points:   · Fluid Compatibility: ensure the pump materials are compatible with the fluid you intend to handle as some fluids will corrode certain pump components   · Flow Rate and Pressure: determine your required flow rate (LPM: Litres Per Minute or GPM: Gallons Per Minute) and the maximum pressure (Bar or PSI) the pump needs to deliver and match that with the pump’ specifications   · Suction and Discharge Ports: ensure the size and type of suction and discharge ports are aligned with piping and system requirements   · Viscosity: consider the viscosity of the fluid being pumped. Diaphragm Pumps can handl...

A double diaphragm pump is a positive displacement pump which utilises two flexible diaphragms that reciprocate back and forth, creating a temporary chamber, which both draws in and expels fluid through the pump. The diaphragms work as a separation wall between the air and the liquid. This pump is sometimes referred to as a membrane pump. Diaphragm pumps are self priming and are ideal for viscous liquids.   Dry running is a one of the key features that differentiate Air Operated Diaphragm pumps from other types of pumps. In majority of the cases this will not damage the pump, nor its elements. This is why, AODD pumps are often used in applications in which the fluid may unexpectedly run out (sumps dewatering, tanks and cisterns transfers, etc.).   However, we should be aware of the few side effects resulting from dry running of the pump and costs and risks associated with it.   When running dry the Diaphragm Pump will not overheat - there are no surfa...

We will receive some diaphragm pump inquiries , the application is for diesel and oil. So today we want to share the Role of Diaphragm Pumps in the Oil Industry.   Oil industry requires high safety standards due to the numerous risks: operators work every day with highly flammable chemicals or are faced with the threat of a well with excessive pressure that can lead to a sudden explosion. Furthermore, the plants are often located in difficult-to-access positions that make the installation and transport of equipment very complex to manage.   Air-operated double-diaphragm (AODD) pumps are one of the most critical equipment to the industry. Oil workers count on AODD pumps to not only keep their production moving smoothly, but also to keep them safe.   Double diaphragm pumps used in the oil industry favor the increase in plant performance and energy efficiency while optimizing the production process. Furthermore, the construction and design characteristics of diaph...

AODD pumps can be easily moved and require only a source of compressed air to operate. Some users choose to cart-mount pumps, allowing for even easier mobility and application versatility. A single AODD pump can be easily used for different jobs around the plant. AODD pumps do not have to be permanently affixed to a single location and do not require an electric power source. With suction/discharge hoses and an air line, you can simply place the pump on the floor and get to work. Some plants even use AODD pumps in a pinch to temporarily replace other pumping technologies while they are being repaired, as they can take much longer than AODD units to repair when taken out of service. But how do I know what type of air diaphragm pump to buy?   Here are the some important considerations for choosing an AODD(Pneumatic diaphragm pump).   1.Flow rate and pressure(head): In order to select the appropriate double diaphragm pump, it’s important to understand t...

Air Double Diaphragm Pump is a common industrial pump that delivers liquid through pneumatic. The characteristic of this pump is that an elastic diaphragm is set inside the pump body to separate the inlet and outlet, and the diaphragm is periodically vibrated by the action of compressed air to promote the flow of liquid.   Important parts: 1.Pump body: usually made of Plastic, Aluminum alloy, SS304&SS316, TEFLON,PVDF, it has corrosion resistance and pressure resistance, and can withstand the transportation of different media.   2. Diaphragm: Located inside the pump body, it is made of elastic material( Teflon, Santoprene, Hytrel, Viton) and can be completely isolated from the liquid to prevent leakage and contamination.   3. Inlet and outlet valves: Located on both sides of the pump body, the flow direction and speed of the liquid are adjusted by controlling the opening and closing of the valves.   4. Driving device: usually a pneumatic piston, which generates v...

Electric diaphragm pumps and pneumatic diaphragm pumps are two common industrial pumps. The following are the differences between them in terms of energy drive, operating principle and applications:   1. Energy drive and operating principle: Electric diaphragm pump：It is a diaphragm pump that uses electrical energy to drive the pump. It is mainly composed of a series of components such as motor, reducer, clutch, diaphragm pump, and sensor. The electrically driven reducer is a primary component that reduces the speed of the electric motor to a speed that can drive the diaphragm pump. Electric diaphragm pumps are powered by an electric motor, converting energy into mechanical motion to drive the diaphragm to work. Its working principle is based on the reciprocating piston principle, and is connected to the diaphragm through a motor-driven connecting rod to realize the suction and discharge of liquid.   Pneumatic diaphragm pump：It is a pump that use compresse...

Air pipes and suction pipes are indispensable accessories for pneumatic diaphragm pumps. How are they installed? What should you pay attention to? This article will introduce them to you.   1. Installation of Air pipe The diameter of the suction pipe of the diaphragm air pump should not be smaller than the diameter of the pump inlet. It is necessary to use an unbent suction pipe at the inlet side so that a high vacuum state can occur. The diameter of the outlet pipe should be at least equal to the outlet diameter, or slightly larger to reduce resistance and losses. All pipes and joints must be sealed, otherwise the self-priming capacity of the pump will be reduced.   Pneumatic diaphragm pump device: If the details of the device are ignored, it may lead to unsafe pumping effects and affect the service life of the pump.   Purpose: The orientation of the double diaphragm pump must be convenient for use and facilitate daily inspection and debugging by maintenance p...

The role of air operated diaphragm pump has been greatly appreciated by people in the industry. Because the pneumatic diaphragm pump plays an important role in the transportation of dangerous and corrosive media, how should it be used correctly to increase the service life of the pneumatic diaphragm pump? What are the methods of use?   1. Installation and startup: ​ Place the air membrane pump as close to the product as possible, so that the suction pipeline is short and the number of configured parts is reduced. Do not reduce the pipeline diameter. In order to extend the life of the diaphragm, keep the pump as close as possible to the liquid being pumped. When the inlet pressure exceeds 10 feet (3 meters) of liquid column, a pressure relief adjustment device needs to be installed to extend the life of the diaphragm. If hard piping is installed, use a short length of flexible connection between the pump and the pipe. Flexible connection can reduce vib...

Maximizing Performance of Industrial Applications with AOE Metal Pump Series   In the world of industrial operations, efficiency and reliability are critical. The AOE metal pump series is designed to provide both, offering robust, corrosion-resistant solutions that meet the demanding needs of various industries. Whether it's for chemical processing, wastewater treatment, or handling abrasive materials, this series stands out as a top choice. These pumps, part of the AOE membrane pump family, take industrial operations to the next level with their powerful air-operated technology.   Why Choose AOE Metal Pump Series? The AOE metal pump series is more than just a pump—it's a powerhouse of durability and precision. Constructed with high-grade materials like stainless steel or aluminum, these pumps can withstand extreme temperatures, corrosive environments, and heavy-duty cycles. The air-operated mechanism reduces wear and tear, ensuring long-term functionality with minimal ...

Lightweight, Corrosion-Resistant Solutions for Industrial Applications In industries where corrosive chemicals, liquids, and sensitive materials are a common challenge, having the right equipment is crucial. The AOE plastic pump series is engineered to deliver exceptional performance in such environments, offering a lightweight yet durable solution that resists corrosion, chemical damage, and abrasive wear. With a focus on efficiency and long-lasting service, these pumps are the ideal choice for industries ranging from chemical processing to pharmaceuticals.   Key Features of the AOE Plastic Pump Series The AOE Plastic pump series is designed with high-grade plastics such as polypropylene (PP) or PVDF (polyvinylidene fluoride), known for their chemical resistance and strength. Additionally, these pumps can be paired with high capacity air operated membrane pumps to further enhance performance, especially in industries where large volumes of fluids need to be transferred efficientl...