In cantilevered designs, the shaft is supported from above the mounting plate, requiring heavy-duty antifriction bearings that can carry the larger loads. The shaft must also be of sufficient diameter to minimize shaft deflection.

The growing demand for potable water across the globe is one of the most important factors boosting the uptake of metering pumps. The shortage of safe drinking water is a major problem in several regions, with a rapid pace of industrialization and urbanization. This has resulted in the adoption of metering pumps in the treatment of wastewater. The global market is also propelled by the rising popularity of digital pumping solutions. Nevertheless, ongoing price wars among leading vendors is anticipated to create hurdles for some, thereby impeding the growth of the metering pumps market.

If the chemical contains any particulates, is a chemical slurry or is potentially a waste chemical with unknown matter in the fluid, centrifugal pumps may struggle and have frequent breakdowns because they cannot handle the solids in the fluid very well.

The pumping of waste fluids is an important requirement in a host of different industries and liquid waste can frequently contain varying amounts of solids, from sludge, slurries and solids in municipal and industrial waste applications, to slurries laden with rocks, pebbles and other particulates in the mining industry. Air Operated Double Diaphragm pumps triumph over other pump designs such as those with close-fitting or rotating mechanisms where abrasive slurries can cause serious wear to functioning parts. As a result this can cause significant restoration costs and could suspend productivity. Due to the size of AODD pumps, these issues rarely occur. Of course AODD pumps are not restricted to pumping waste containing solids – they are equally well suited to pumping other types of waste, including aggressive chemicals and even viscous fluids since the flow rate is directly proportional to the speed of the pump. Where AODD pumps are different when it comes to pumping viscous materials is that the pump automatically reduces the pumping rate as the level of viscosity increases, it also cleverly stops pumping when the liquid can no longer move in order to stop the potential for damaging itself. Other pumps struggle with viscous materials and can lose friction within the pump itself as well as between the walls of the pipe and the liquid.

NPSHa is the amount of NPSH that the system has available at the eye of the pump impeller. This NPSHa value is entirely a function of the liquid, its properties, ambient conditions and the suction system design and geometry. Essentially, the calculation is about the suction system itself and has nothing to do with the pump. This calculation should be completed by the system owner, the end user and/or their engineer or consultant. For liability reasons, manufacturers are normally directed to not be involved in the customers’ calculations; however, as time marches on, the manufacturer is getting more involved mostly as a preservation issue.

“Global Double Diaphragm Pumps Market Report 2019-2025” helps the clients to take business decisions and to understand strategies of major players in the industry. The report also calls for market – driven results deriving feasibility studies for client needs. Marketinsightsreports ensures qualified and verifiable aspects of market data operating in the real- time scenario. The analytical studies are conducted ensuring client needs with a thorough understanding of market capacities in the real- time scenario.

The typical needle wash process involves forcing deionized (DI) water, solvent, surfactant (soap solution), sodium hypochlorite (NaClO) or other liquid through a needle that is positioned inside a wash station (volume ~10 to 25 mL open-top well; 5 to 50 mL of liquid typically consumed).

Rotating assembly: The rotating assembly of the flexible-liner pump consists of an eccentric rotor that is mounted on an overhung, frame-mounted shaft, and is completely isolated from the pumped fluid. The liner acts as a joint gasket between the pump body and cover plate, and between the body and the bearing frame. Since the aggressive fluid does not contact the rotor, the rotor does not require special materials of construction. As the rotor oscillates within the liner, it creates a sealed, rolling contact point between the inside surface of the body block and outer surface of the liner. This imparts a progressive squeegee action on the trapped fluid.

As already mentioned, there is a huge choice of AODD pumps from a large number of manufacturers, so it can be useful to consult with independent pump suppliers, who are not tied to a particular manufacturer, for advice on the most suitable pump for a given application within the allocated budget.

Further advancements like use of diaphragm pumps in artificial hearts, boats industry and its increasing use in process applications in several industries is helping the market to grow. Graco Inc. launched a double diaphragm pump Husky 1050e which consists of a combination of properties of air operated pumps and electric pump in 2015. Hillenbrand, Inc. acquired ABEL Pumps LP, leading manufacturer of diaphragm pumps to enter the flow control market in 2015.

The key drivers increasing the adoption of modern liquid handling technologies are the inclusion of automation in research and medical institutions. The latest automated liquid handling systems have significantly reduced the time spent in liquid handling and provided quality results. These automated liquid handlers are capable of handling laboratory tasks such as serial dilutions, stamping and plate reformatting.

For lower flow rate applications or higher pressure applications, users will probably enter the realm of positive displacement pumps: rotary lobe, gear, peristaltic and progressive cavity, for example. Although the positive displacement style pumps generally do not provide as high of flow rate as their centrifugal counterparts, they offer the ability to accurately measure flow (meter) since they are positive displacement. If this is important to an application, it can be a deciding factor.