Air-operated double diaphragm pumps(AODD) are used to transfer liquid in mining, coating,Chemical, oil, water/waste water treatment and some other industrial. They are relatively low cost and reliable. And they can be run dry.   This article will cover how to operate diaphragm pump correct.   1. Installation and Start-up Locate the pump as close to the product being pumped as possible. Keep the suction line length and number of fitting to a minimum. Don’t reduce the suction line diameter. For installations of rigid piping, short sections of flexible hose should be installed between the pump and piping. The flexible hose reduces vibration and strain to thee pumping system.   2. Air Supply Air supply pressure cannot exceed 125psi(8.6bar). Connect the pump air inlet to an air supply of sufficient capacity and pressure required for desired performance. When the air supply line is solid piping, use a short length of flexible hose between the pump and the ...

The double diaphragm pump is a versatile workhorse that enables users across a hugely diverse range of industries to standardies on a single pump type that for handling a wide variety of fluids. So long as there is a compressed air supply available the pump can be installed wherever it is required and should circumstances change it can be moved round a plant and switched to other operations with ease. Whether to fluid be handled requires a gentle pumping action, is chemically or physically aggressive the positive displacement AODD pump offers an efficient and low maintenance solution.   This article will show how to install Pneumatic Diaphragm Pump.   Tightening Threaded Fasteners Before First Use Before using the pump for the first time, check and retorque all external fasteners. After the first day of operation, retorque the fasteners. Although pump use varies, a general guide-line is to retorque fasteners every two months.   Installation/Mountings l These pumps c...

Motor-driven diaphragm pumps are often used for metering, dosing or dispensing applications but AODD pumps tend to be general workhorse devices, typically used in transfer applications. Air operated diaphragm pumps are ideal for transferring a huge range of liquids including diesel, fuel, water as well as dirty and used oils. Great for many applications including tapping into air lines around work shops to move motor oils and hydraulic oils. The twin diaphragm design allows for periods of pump dead heading as well as transfer of fluids with particulate matter up to a few mm in size. They are relatively low cost and reliable; they can be run dry and can pump dirty/contaminated liquids. The following lists some typical applications of air diaphragm pumps: Mining  (Can operate in classified/hazardous areas)  -Dewatering above and below ground sites and quarries -Transferring abrasive slurries and sludge mixtures -Dosing reagents -Transferring solvents for separating mineral...

Air operated double diaphragm pumps 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 how to choose the pump material? The pumps are available in 6 different materials(Plastic, Aluminum,Stainless steel304&316, PVDF, Cast iron, Teflon) for the pump body and 5 different materials (Teflon,Santoprene, Hytrel, Viton, Buna-N) for the diaphragms. This makes it possible to select the best solution for your application.   When it comes to pumping chemicals, pump materials matter. Materials widely used in pumps for chemical transfer include polypropylene (fitted with PTFE or Santoprene diaphragms). Santoprene is very popular because of its excellent chemical resistance, flex life, abrasion resistance and low cost. Stainless steel units are a great choice because they work we...

DEFU air operated double diaphragm pumps (AODD pumps) are designed for general fluid transfer. Our diaphragm pumps reliably transfer a wide variety of fluids, from clean, light viscosity to medium viscosity. They can pump large particles without damage. Plastic diaphragm pump casings can easily handle corrosive and abrasive fluids.   5 Advantages of DEFU pneumatic diaphragm pump:   1. Oil-free lubrication, 100% does not crash. 2. The unique patented design of the air valve (external maintenance air valve system) is repaired from the outside of the pump body, reducing downtime and improving efficiency.   Air valve of aluminum center block a.  Stainless steel valve plate adopt surface grinding process, low coefficient of friction. b.  Plastic parts material to be improved acetal material, excellent wearing resistance. Good self-lubricating. c . These parts can ensure the air valve operating smooth, reduce the air consumption &nb...

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...

Air Diaphragm pump is driven by air, with features of simple structure, convenient disassembly and repair, stable liquid delivery, low vibration, low noise, strong self-priming ability, high viscosity of conveyed liquid, and has many advantages of self-priming pump, submersible pump, mud pump and impurity pump and other conveying machinery.   The diaphragm pump uses compressed air as the power source, which can be used to pump all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, highly toxic liquids, and liquids that are not easy to flow. Diaphragm is the core component of diaphragm pump, according to different media, we have cast iron,Aluminum Alloy, PVDF, SS304, SS316 and plastic pump body for choosing.     The diaphragm pump is a deceptively simple design. A diaphragm, or membrane, is positioned in a pumping chamber, usually form-fitted to achieve efficient gas or fluid movement. The membrane can be made of Teflon...

In order to select the appropriate air diaphragm pump, it’s important to understand the required flow rate in order to achieve maximum AODD pump efficiency.    Diaphragm pump flow rate is the volume of fluid you can transport within a given time. Knowing the diaphragm pump flow rate will help you to determine the correct pump for your application.   If you desire a higher flow rate, you’ll need a larger pump with larger port sizes. The higher the flow rate, the faster your job gets done. This ensures deadlines are met and allows increased production. When more product is produced in a shorter amount of time, profits soar. That's why it's important to purchase diaphragm pumps that require less air to operate and offer high flow rates.   Today i will introduce our 1inch diaphragm pump flow rate to you. Suction& discharge size: 1inc*1inch(25mm*25mm) flange DIN/ANSI Suction lift  dry : 4m   Wet: 8m Max particle diameter: 4mm...

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...