With the rapid development of science and technology, the manufacturing technology of diaphragm pumps is constantly updated, but no matter how the development of diaphragm pumps, some problems will never change. Here, we will sort the top ten of the most common problems solved by pneumatic diaphragm pumps.

　　 1. How to determine the type of pneumatic diaphragm pump I want to buy?

　　Although this may seem like a complicated problem, but as long as you understand a few points, you will know how to choose the right pump for a specific application.

　　Fluid: The type of pump you intend to make is the most important factor of fluid when choosing a pump. To avoid wear or corrosion, determine the chemical composition and consistency of the fluid. Is it a clean liquid or slurry (semi-fluid mixture)?

　　Viscosity: Fluid viscosity is an important factor in the pump selection process. Robust pumping equipment is required to move highly viscous fluids.

　　Flow rate: To select the appropriate pump, it is important to determine the flow rate, measured in gallons per minute (GPM) — or simply, the existing pump size (diameter). Usually if you desire a higher flow rate, you need a large pump and a larger pipe size.

　　 Pressure: The determination of the potential pressure conditions at the pump outlet and inlet will help establish the correct equipment required.

　　Temperature: The temperature of the fluid determines the most suitable pump material for a specific application.

　　 2. What kind of fluid transmission is the diaphragm pump?

　　 Diaphragm pump will be almost any kind of fluid. Some common examples of fluid pumps using diaphragm pumps are water, oil, and acid.

　　 Diaphragm pumps pump high-viscosity fluids from adhesives to gear oil lotions, surfactants and resins. Rule of thumb: if it pours, it's pump. When pumping viscous fluids, in some cases triple the pump port, please use a large suction line. The pump should also be positioned close to, or even below the liquid level. High-viscosity fluids cause the pump's stroke speed to be slow; on adjustment, the air control valve of the pump that slows the air flow will keep the pump from stroking too quickly.

　　 3. Are there any specific precautions for plastic diaphragm pumps?

　　 Plastic diaphragm pumps are the most suitable for applications involving chemicals such as acid, caustics and bleach. Some chemicals are not suitable for eg styrene and some plastic pumps like isocyanate and polyol resin.

　　 The common follow-up question is, "Don’t plastic pumps always leak?" The answer is no; however, they should be checked and re-tightened regularly, more frequently than metal or stainless steel pumps. The frequency of deflation depends on the application; pressure, hours in service, and fluid temperature all affect the flow of plastic. Remember, the plastic material stream is compressed. Tightening the fasteners on your plastic diaphragm pump should be part of any preventive maintenance program, based on the pump's service obligations.

　　 4. What are the key factors for diaphragm pump maintenance?

　　 In order to avoid expensive repairs and delays and keep your production going smoothly, you should implement a regular pump maintenance schedule. The good news: The air diaphragm pump is very easy to clean and maintain, compared with other types of pumps, a large number of electrical components and parts. Even better, in most cases, you only need a wrench and screwdriver to keep your pump in optimal working condition.

　　 There are four main tasks to keep in mind when performing routine pump maintenance:

　　 Air quality: Since the air diaphragm pump depends on the air being operated, air quality and air humidity are the keys to keeping your pump healthy. Check the air filter regularly, it can become dirty and clogged with poor air quality. In addition, moisture in the air should be monitored to ensure proper pump flow.

　　Elastic elements: Check the elastic elements of the pump every two months to prevent uneven wear.

　　Inlet/Store: Consistently check your pump inlet/outlet, also known as suction side discharge. It is common rock or other debris material to establish and block pump flow.

　　 Torque setting: Especially with plastic diaphragm pumps, the torque of the pump bolts should be checked regularly. Plastic parts can be compressed over time.

　　 5. What kind of facilities use diaphragm pumps?

　　 All sizes of facilities, and in a wide range of industries, use pneumatic diaphragm pumps. These include petrochemicals, metal manufacturing, mining, water, construction, cleaning, food and beverage, and printing and inks.

　　 6. How to adjust the flow of diaphragm pump?

　　 There are three methods to adjust the flow of the diaphragm pump.

　　Increase or decrease the air pressure to ensure that you are operating within the limits of the pump.

　　Increase or decrease the valve used on the air line.

　　 Open or close the flow of fluid to the valve.

　　 There is only one firm warning when regulating the flow rate: it will not restrict your pumping lines to be smooth. Restricting the fluid line will cause your diaphragm to fail and start to empty, causing the parts to wear out quickly and run in a state where the liquid is pumped to create a vacuum void foaming state.

　　 7. Can I replace another brand of diaphragm pump?

　　 Sometimes. The key factor when considering different brands of diaphragm pumps is your existing footprint. Several major manufacturers, including all Flo, produce almost every diaphragm pump that is specific to delivery specifications. This means that most of our pumps can be used in any existing footprint. If you are looking to make switches, consider your existing set carefully, and ask your distributor to help determine the appropriate alternative.

　　 8. What suction stroke can I expect from the diaphragm pump?

　　 Features like suction tendency vary widely among manufacturers, depending on factors such as the size of the pump, fluid viscosity and whether you are looking for a damp or dry elevator. A safe, average range will be between 8 and 15 feet (2.44 to 4.57 meters) depending on the elastomer of the pump.

　　 9. Can the diaphragm pump be submerged?

　　 Yes, the diaphragm pump can be submerged if the fluid is compatible with the pump housing and fasteners, and the level of the exhaust pipe fluid.

　　 10. How much does it cost to run a diaphragm pump?

　　With everything about diaphragm pumps, the cost of running it depends on several factors including pump size and hours of service. Another key factor is the pump you choose and the efficiency rating of the product. To give you an idea, 2 inch (51 mm) diaphragm pumps range in price from US$1400 to US$6000 and can be operated anywhere from US$3000 to US$11,000 per year.

The cost of running a diaphragm pump can often far exceed the cost of the pump itself. Because of this, a lot of time and research are spent on maximizing pump efficiency, making significant progress, and reducing operating costs.

　　Across multiple industries, pump users demand equipment that works as reliably and efficiently. When your device performs versatility and the durability required by your application, you can keep things running smoothly. Pneumatic diaphragm pumps are rugged, lubricating oil-free, stall/chilled water pumps that provide high-quality, trouble-free, continuous output — even under the harshest conditions.