The 20 best diaphragm pump brands
Wilden, SANDPIPER and ARO lead our ranking of 20 diaphragm pump brands. Compare what each brand makes, visit its official site, or shop it online.
Diaphragm Pump brands, ranked
TSCentral is reader-supported: we may earn a commission when you shop through links on this page. It does not affect the ranking.
-
1
Wilden
Wilden makes air-operated double diaphragm pumps for industrial chemical, slurry, and general fluid transfer.
Website: wildenstore.psgdover.com |Brands like Wilden
Popularity 10.0/10
-
2
SANDPIPER
Sandpiper makes air-operated double diaphragm pumps for industrial fluid handling, including chemical and slurry service.
Website: sandpiperpump.com |Brands like SANDPIPER
Popularity 7.0/10
-
3
ARO
ARO, part of Ingersoll Rand's pump line, makes air-operated double diaphragm pumps for industrial and process use.
Website: arozone.com |Brands like ARO
Popularity 6.8/10
-
4
KNF
KNF makes diaphragm pumps and vacuum pumps for laboratory, medical, and industrial applications.
Website: knf.com |Brands like KNF
Popularity 6.2/10
-
5
Graco
Graco makes air-operated diaphragm pumps, including its Husky line, for coatings, chemicals, and industrial transfer.
Website: graco.com |Brands like Graco
Popularity 4.8/10
-
6
Dayton
Dayton sells air-operated diaphragm pumps under its own name, supplied through its industrial distribution channel.
Website: dayton-phoenix.com |Brands like Dayton
Popularity 4.0/10
-
7
Ingersoll Rand
Ingersoll Rand makes air-operated double diaphragm pumps, mainly through its ARO brand, for industrial fluid transfer.
Website: ingersollrand.com |Brands like Ingersoll Rand
Popularity 4.0/10
-
8
PULSAtron
PULSAtron makes diaphragm metering pumps for chemical dosing in water treatment and industrial processes.
Website: pulsatron.com |Brands like PULSAtron
Popularity 3.6/10
-
9
ITT
ITT is a multinational technology and manufacturing business that assists clients in overcoming difficult issues. The company is dedicated to helping clients in sensing, effects, and mission systems, propulsion, energy, environment, weapons systems, military electronics, and aerostructures deliver technical advances....
Website: itt.com |Brands like ITT
Popularity 3.4/10
-
10
Gast
Gast makes diaphragm vacuum pumps and compressors for laboratory, medical, and industrial air and vacuum applications.
Website: gastmfg.com |Brands like Gast
Popularity 3.4/10
-
11
Pulsafeeder
Pulsafeeder makes diaphragm metering pumps for chemical dosing and process fluid control in industrial settings.
Website: pulsafeeder.com |Brands like Pulsafeeder
Popularity 2.5/10
-
12
Jabsco
Jabsco, a Xylem brand, makes marine and RV diaphragm water pumps for freshwater, bilge, and sanitation systems.
Website: jabscoshop.com |Brands like Jabsco
Popularity 1.7/10
-
13
Pfeiffer
Mortar, coal, gypsum, and ceramic materials industries may rely on Pfeiffer for innovative plant solutions. They only make commitments that they are confident they can keep. Very trustworthy, with top-notch outcomes. This brand can be trusted for long-term financial prosperity....
Website: gebr-pfeiffer.com |Brands like Pfeiffer
Popularity 1.5/10
-
14
Newport
The Newport Daily News is Southern New England's local news and information source. Local news, sports, business, politics, features, and entertainment are all covered in real-time. With every breaking article, live scoring updates, and coverage of local events around the...
Website: newportri.com |Brands like Newport
Popularity 1.1/10
-
15
Fisher
Fisher Scientific Company, Inc. is a global provider of goods and services for molecular biology, genomics, biotechnology research, and the diagnostics business, which supports clinical laboratories. Fisher Scientific also provides a wide range of laboratory equipment, tools, instruments, and consumables...
Website: fishersci.com |Brands like Fisher
Popularity 1.1/10
-
16
Aquatec
Aquatec makes small diaphragm water pumps for recreational vehicles, marine systems, and water treatment equipment.
Website: aquatec.com |Brands like Aquatec
Popularity 1.1/10
-
17
Agilent
Agilent makes laboratory vacuum pumps, including oil-free diaphragm vacuum pumps for analytical instrument use.
Website: agilent.com |Brands like Agilent
Popularity 0.7/10
-
18
VEVOR
VEVOR sells a broad range of budget equipment under its own name, including small diaphragm water and transfer pumps.
Website: vevor.com |Brands like VEVOR
Popularity 0.7/10
-
19
Millipore
Millipore, the life sciences brand of Merck, makes laboratory diaphragm vacuum pumps for filtration and sample preparation.
Website: emdmillipore.com |Brands like Millipore
Popularity 0.7/10
-
20
Tuthill
Tuthill has been committed to delivering more fantastic goods for a wide range of customers since its inception. Tuthill Corporation understands that performance is everything. Their industrial goods are created and built to satisfy the demands of their clients. They...
Website: tuthill.com |Brands like Tuthill
Popularity 0.7/10
Official websites and social accounts
| Brand | Website | X / Twitter | YouTube | |
|---|---|---|---|---|
| Wilden | wildenstore.psgdover.com | – | – | – |
| SANDPIPER | sandpiperpump.com | – | @SandpiperPump | SandpiperPump |
| ARO | arozone.com | /aropumps | @AROpumps | aropumps |
| KNF | knf.com | – | – | – |
| Graco | graco.com | – | – | – |
| Dayton | dayton-phoenix.com | – | – | – |
| Ingersoll Rand | ingersollrand.com | /ingersollrand | @irproducts | IngersollRandAir |
| PULSAtron | pulsatron.com | – | – | – |
| ITT | itt.com | /ITTInc | @ITT_Inc | ITTCorp |
| Gast | gastmfg.com | – | – | GAST Manufacturing |
Diaphragm Pumps Buying Guide
A diaphragm pump is a type of positive displacement pump that uses a flexible diaphragm to pump fluids. It is a versatile and efficient pump that can handle a wide range of fluids, including abrasive and viscous fluids. Diaphragm pumps are widely used in industries such as oil and gas, petrochemical, pharmaceutical, food and beverage, and agriculture. If you're planning to buy a diaphragm pump, this guide will help you understand the factors you need to consider to make an informed decision.
Types of Diaphragm Pumps
There are two main types of diaphragm pumps: air-operated double diaphragm pumps (AODD) and mechanical diaphragm pumps.
Air-Operated Double Diaphragm Pumps (AODD)
Air-operated double diaphragm pumps (AODD) use compressed air to operate the diaphragms. The air alternately pressurizes and depressurizes the diaphragms, causing them to move back and forth and pump the fluid. AODD pumps are simple, reliable, and easy to maintain. They are ideal for applications that require gentle handling of the fluid, such as transferring or circulating chemicals, oils, and solvents. AODD pumps are also suitable for handling abrasive and viscous fluids.
Mechanical Diaphragm Pumps
Mechanical diaphragm pumps use a hydraulic mechanism to operate the diaphragms. The hydraulic fluid pushes and pulls the diaphragms, causing them to move back and forth and pump the fluid. Mechanical diaphragm pumps are suitable for high-pressure applications and handling fluids that contain solids or debris. They are also ideal for dosing or metering fluids, as they can provide precise and consistent flow rates.
Factors to Consider
When buying a diaphragm pump, there are several factors you need to consider to ensure that you select the right pump for your application. Here are the main factors:
Fluid Type and Properties
The type and properties of the fluid you need to pump are the most critical factors to consider when selecting a diaphragm pump. Different fluids have different viscosities, densities, corrosiveness, and abrasiveness, which can affect the pump's performance and life span. AODD pumps are generally suitable for handling low-viscosity fluids, while mechanical diaphragm pumps are better suited for high-viscosity fluids or fluids that contain solids or debris. The material of the pump's wetted parts, such as the diaphragms, valves, and seals, should also be compatible with the fluid to avoid chemical reactions or contamination. Common materials used for wetted parts include stainless steel, polypropylene, PTFE, and neoprene.
Flowrate and Pressure
The required flow rate and pressure are essential requirements for selecting a diaphragm pump. The flow rate is the volume of fluid that needs to be pumped per unit time, typically measured in gallons per minute (GPM) or liters per minute (LPM). The pressure is the force required to move the fluid, typically measured in pounds per square inch (PSI) or bar. The flow rate and pressure depend on the application's requirements and the fluid's viscosity and density. AODD pumps can typically provide flow rates up to 250 GPM and pressures up to 125 PSI, while mechanical diaphragm pumps can provide flow rates up to 150 GPM and pressures up to 230 PSI.
Temperature
The temperature of the fluid can affect the performance and life span of the diaphragm pump. High temperature fluids can cause the diaphragms to degrade or fail prematurely, while low-temperature fluids can make the diaphragms stiff and inflexible, reducing their pumping efficiency. The maximum temperature that a diaphragm pump can handle depends on the pump's materials and design. AODD pumps can typically handle temperatures up to 200°F, while mechanical diaphragm pumps can handle temperatures up to 220°F.
Suction Lift
The suction lift is the maximum height that the pump can lift the fluid from the source to the pump's inlet. The suction lift depends on the pump's design and the fluid's properties, such as viscosity and density. AODD pumps typically have a maximum suction lift of 15 feet, while mechanical diaphragm pumps can have a maximum suction lift of up to 30 feet.
Port Size
The port size is the diameter of the inlet and outlet ports on the pump. The port size affects the flow rate and pressure of the pump, as well as the compatibility with the piping system. AODD pumps typically have port sizes ranging from ¼ inch to 3 inches, while mechanical diaphragm pumps can have port sizes ranging from ½ inch to 2 inches.
Noise Level
The noise level of the diaphragm pump can be an important factor to consider, especially if the pump is used in a noise-sensitive environment. AODD pumps are generally quieter than mechanical diaphragm pumps because they use compressed air instead of a hydraulic mechanism to power the diaphragms. However, some AODD pumps can still produce noise levels up to 90 decibels, which can be harmful to human hearing if exposed for more than 8 hours.
Cost and Maintenance
The cost and maintenance requirements of the diaphragm pump are also factors to consider. AODD pumps are generally less expensive than mechanical diaphragm pumps and require less maintenance because they have fewer moving parts. However, AODD pumps require a source of compressed air to operate, which can add to the operating cost. Mechanical diaphragm pumps are more expensive and require more maintenance, but they can operate without a compressed air source, which can save on operating costs over time.
Conclusion
Buying a diaphragm pump requires careful consideration of the fluid type and properties, flow rate and pressure, temperature, suction lift, port size, noise level, cost, and maintenance requirements. By understanding these factors and selecting a pump that meets your application's requirements, you can ensure efficient and reliable pumping with minimal downtime and maintenance. It's always helpful to consult with a diaphragm pump expert or supplier to ensure that you make an informed decision and get the best value for your investment.
