Diaphragm Pumps
Verified by Mel Sykes, Industrial Supply Chain Specialist - April 2026
| Specification | Details |
|---|---|
| Types | Air-operated double diaphragm (AODD), electric, mechanically driven |
| Flow rates | 1 to 1,000 l/min |
| Advantages | Self-priming, runs dry safely, handles solids and viscous liquids |
| Standards | ATEX certified models available |
| Brands | Wilden, ARO, Yamada, Versamatic |
What are Diaphragm Pumps?
Diaphragm pumps are positive displacement devices that use alternating diaphragms to move fluids efficiently and reliably. They're versatile for handling a wide range of liquids and solids.Types and variants
There are three main types: air-operated double diaphragm (AODD), electric, and mechanically driven. AODD pumps like the Wilden series are popular due to their strong design and ability to run dry without damage. Electric models, such as those from Yamada, offer precise control and high efficiency. Mechanically driven pumps, like Versamatic's designs, provide consistent performance for continuous duty applications.Materials and specifications
Diaphragm pump materials vary based on application needs. AODD pumps often use A2-70 stainless steel diaphragms or EPDM rubber wetted parts to handle corrosive chemicals. Electric models may feature EN8 carbon steel casings with AISI 316L stainless steel components for durability and corrosion resistance. Standards such as ISO, BS, and DIN guide material selection and manufacturing processes.Selection criteria
Choosing the right Diaphragm Pump depends on several factors: flow rate requirements (1 to 1,000 l/min), suction lift capacity, pressure needs, fluid viscosity, and environmental conditions. ATEX-certified models are important for explosive environments. Consider load ratings, temperature ranges, and required certifications like CE or PED.UK suppliers
MLC lists verified suppliers from Companies House that offer high-quality Diaphragm Pumps. For instance, companies like CBM (Company No. 06834751) and BIAFD (Company No. 02398579) provide a wide range of AODD pumps suitable for industrial applications.Common applications
Diaphragm Pumps are used in diverse sectors such as chemical processing, oil and gas refining, food manufacturing, and pharmaceutical production. They excel in handling abrasive slurries, corrosive chemicals, and viscous liquids without clogging or damaging internal components. Their self-priming ability makes them ideal for transferring fluids from tanks with low liquid levels.Diaphragm Pumps are indispensable in industries where reliable fluid transfer is critical, ensuring efficient operations across various sectors.
References
Verified UK Suppliers
| Company | Company No. | Location |
|---|---|---|
| Mixall Limited | 12469076 | Bredgar Road, Gillingham, ME8 6PL |
| Green Energy Engineering Ltd | NI601109 | 198a Lurgan Road, Dromore, BT25 1HL |
| Motor Technology Ltd. | 01895277 | Motec House Chadkirk Business Park, Romiley, Stock |
| Motors Fans And Pump Solutions Limited | 05042981 | 87 North Road, Parkstone Poole, Dorset, BH14 0LT |
| J.B.J. (Techniques) Limited | 01185469 | 28 Trowers Way, Holmethorpe Industrial Estate, Red |
Frequently Asked Questions
What are Diaphragm Pumps?
Diaphragm Pumps are engineering components used in industrial applications. Browse verified UK suppliers on MLC.
Where can I buy Diaphragm Pumps in the UK?
MLC lists verified UK diaphragm pumps suppliers with Companies House data. Browse by product category or search by location.
What are the main types of Diaphragm Pumps available?
The main types of Diaphragm Pumps include air-operated double diaphragm (AODD), electric, and mechanically driven models. AODD pumps like Wilden series models are known for their strong design and ability to run dry without damage.
How do you choose between an AODD pump and an electric Diaphragm Pump?
An air-operated double diaphragm (AODD) pump is ideal for applications requiring self-priming capabilities, handling solids or viscous liquids safely. Electric models such as Yamada's provide precise control and high efficiency, making them suitable for environments where electricity is readily available.
What standards do Diaphragm Pumps adhere to in the UK?
ATEX certified models are available for use in potentially explosive atmospheres, ensuring safety compliance with UK regulations.
Which brands manufacture Diaphragm Pumps that meet UK industrial requirements?
Leading brands like Wilden, ARO, Yamada, and Versamatic produce Diaphragm Pumps that adhere to stringent UK standards and offer a range of models suitable for various applications.
What are the flow rates typically achievable with Diaphragm Pumps?
Diaphragm Pumps can achieve flow rates ranging from 1 to 1,000 litres per minute (l/min), making them versatile for both small-scale and large industrial operations.
Why might an engineer choose a mechanically driven Diaphragm Pump over other types?
Mechanically driven Diaphragm Pumps, such as those from Versamatic, provide consistent performance suitable for continuous duty applications where reliability is important.
How do I determine the cost and availability of Diaphragm Pumps in the UK market?
Costs vary based on pump type, material, and brand. ARO, Wilden, Yamada, and Versamatic are readily available through UK distributors with prices reflecting their quality and features.
What materials are commonly used in constructing Diaphrag Pump parts?
Common construction materials for Diaphragm Pumps include stainless steel, cast iron, and various plastics depending on the application's chemical compatibility requirements.