Diaphragm pumps are a versatile and popular choice for transferring fluids in a variety of industrial, agricultural, and chemical applications. They are appreciated for their reliability, ease of use, and ability to handle corrosive, abrasive, and viscous fluids. However, when it comes to dry materials, choosing the right diaphragm pump can be a bit challenging, as the type and texture of the material, as well as the flow rate and pressure requirements, can vary greatly. In this blog, we will discuss some key factors to consider when selecting a diaphragm pump for dry applications, and highlight some top models in the market.
Firstly, it's essential to determine the nature of the dry material you need to transfer. Is it a dust, powder, or granule? Is it fragile, friable, or sticky? Is it a food ingredient, a chemical, or a pharmaceutical product? Each type of material has its peculiarities, and the pump that works well with one may not be suitable for another. For instance, a pneumatic diaphragm pump is ideal for transferring fine dust or powder, as it creates low shear and agitation, minimizing the risk of clogging or damage to the material. On the other hand, a peristaltic pump may be preferred for transferring fragile granules or tablets, which can be easily crushed or broken by other pumps.
Secondly, you should consider the flow rate and pressure requirements of your application. Diaphragm pumps come in different sizes and designs, ranging from small, portable units for low-volume intermittent use to large, heavy-duty machines for continuous high-flow operation. The flow rate, measured in gallons per minute (GPM) or liters per minute (LPM), depends on the diameter of the pump inlet and outlet, as well as the speed of the diaphragm. The pressure, measured in pounds per square inch (PSI) or bar, depends on the stiffness and thickness of the diaphragm, as well as the power of the motor or air compressor that drives the pump. Most diaphragm pumps can handle pressures up to 100 PSI or 7 bar, but some specialized models can reach 250 PSI or 17 bar.
Thirdly, you should consider the environmental conditions and safety requirements of your application. Some diaphragm pumps are designed for use in hazardous or explosive environments, such as mines, refineries, or chemical plants, and are equipped with explosion-proof motors, non-sparking materials, and grounding wires. Others are suitable for sanitary or sterile applications, such as pharmaceutical or food processing, and are made of FDA-approved materials, such as stainless steel, Teflon, or EPDM rubber. Additionally, you should make sure that the pump is compatible with the electrical or pneumatic power source available on your site, and that it has the necessary accessories, such as hoses, couplings, filters, or pressure regulators.
Based on these factors, some of the best diaphragm pumps for dry applications are:
1. Wilden Pro-Flo SHIFT.
The Wilden Pro-Flo SHIFT is an air-operated, double-diaphragm pump that combines high flow rates, energy efficiency, and low maintenance. It features the SHIFT (Solids Handling Integrated Technology) system, which reduces the air consumption by up to 60%, thereby extending the diaphragm life, reducing the noise level, and improving the safety. The pump has a wide range of elastomers and plastics to choose from, ensuring compatibility with various dry materials and solvents. It is suitable for applications in the chemical, mining, paint, and food industries, among others.
2. Graco Husky 3300.
The Graco Husky 3300 is a pneumatic double-diaphragm pump that offers ruggedness, versatility, and ease of use. It can handle up to 275 GPM and 125 PSI, making it suitable for high-flow, high-pressure transfer of dry materials, slurries, and abrasive fluids. The pump has a modular design, which allows for easy maintenance, repair, and replacement of parts, such as air valves, check balls, and diaphragms. It also has a range of materials of construction, including aluminum, stainless steel, and polypropylene, to fit various applications and budgets.
3. Almatec E-Series.
The Almatec E-Series is an electrically driven double-diaphragm pump that offers precise flow control, reliability, and hygiene. It has a compact footprint, low pulsation, and smooth, repeatable flow, making it suitable for dosing and filling of dry, liquid, or gaseous products, in pharmaceutical, cosmetic, or food applications. The pump has a hermetic design, which prevents leakage, contamination, or product loss, and requires no external lubrication or maintenance. It is also available in ATEX or EHEDG versions, for use in explosive or hygienic environments, respectively.
In conclusion, choosing the right diaphragm pump for dry applications requires careful consideration of the material properties, flow and pressure requirements, environmental and safety factors, and budget constraints. By evaluating these criteria and consulting with reputable suppliers or experts, you can select a diaphragm pump that meets your needs and exceeds your expectations.
If you want to learn more, please visit our website diaphragm pump dry, electric diaphragm pumps for sale, powder pump.