Chemical-resistant diaphragm pumps

Chemical resistant diaphragm pumps for aggressive media

Oil-free diaphragm pumps guarantee a sterile vacuum in the laboratory, allowing aggressive gases to be pumped safely. The use of resistant fluoroplasts such as PTFE and PVDF means that the media only come into contact with acid-resistant materials. The high chemical strength combined with the flexibility of the membranes significantly reduces the frequency of servicing. These devices offer a capacity of up to 28 m³/h at a pressure of 0.6 mbar, operating extremely quietly and without vibration.

The special design of the head facilitates maintenance, which is crucial in industrial processes.

• precise distillation and filtration of substances,
• optimal operation of evaporators and dryers,
• effective recovery of solvents through the side outlet,
• Safe operation in potentially explosive atmospheres in accordance with ATEX,
• compliance with FDA standards for the food industry.

The key to success is the precise selection of parameters for a specific process. The right configuration not only reduces energy costs, but above all increases the overall profitability of the operation.

Chemical resistance – PTFE, PVDF and elastomers

The durability of modern pumping systems is directly dependent on the quality of the materials used in their production. In environments exposed to aggressive chemicals, it is crucial to choose materials that guarantee full safety and corrosion resistance.

The most commonly used construction solutions include:

• PTFE plastic showing complete inertness to strong acids and bases,
• durable PVDF and PP and PE-HD polymers  with high mechanical resistance,
• flexible membranes made of specialized EPDM compounds,
• Viton seals tailored to a specific chemical medium
• metal elements made of AISI 316L steel reinforced with an additional protective coating.

Precise matching of components to the operating conditions allows for a significant extension of  the life of the device. Thanks to the use of modern polymers and high-quality steel, these systems maintain reliable tightness, which effectively eliminates the risk of failure and minimizes costly downtime in industrial processes.

Application of chemical-resistant pumps in industry

Eliminating rotating parts and seals is the key to safer work, especially when pressing thick, viscous or abrasive substances. The lack of friction inside the mechanism effectively protects it from malfunctions, which guarantees process stability and avoids sudden downtime, even in extremely harsh industrial environments.

In the chemical sector, these devices are indispensable for the transport of aggressive media, protecting the plant from the corrosive effects of liquids. Their versatility allows you to maintain full continuity of production in areas such as:

• safe pumping of hydrochloric acid,
• transport of sulphuric acid,
• sending caustic soda,
• operation of flotation systems,
• distribution of fertilizers,
• AdBlue fluid transmission.

The use of modern design solutions ensures maximum reliability and eliminates the risk of failure caused by a difficult working environment.

Occupational safety and ATEX and FDA certifications

Sealed hermetic structures are an effective barrier to dangerous fumes, which directly translates into a higher standard of work in industrial plants. In hazardous areas, pneumatic drives and motors with a reinforced structure, rigorously aligned with the requirements  of ATEX and IECEx standards,  play a key role.

Modern technologies allow for the safe handling of flammable substances and process optimization by:

• effective reduction of emissions of harmful substances,
• use of reinforced components,
• full compliance with international safety certificates,
• use of FDA-certified materials,
• implementation of intelligent control systems,
• ensuring maximum protection for staff and consumers.

In the food and pharmaceutical sectors, the priority is the neutrality of materials in contact with the product. This ensures that the ingredients retain their purity, which is especially important when transporting aggressive solvents. Modern production is based on the synergy of hygiene, precision and reliable safety systems.

Selection of a diaphragm pump for installation

A wide variety of materials – from plastics to metals and certified hygienic versions – allows the devices to be precisely adapted to the specifics of the pressed medium. The high efficiency of the vortex and monoblock models, designed in accordance with ISO and DIN standards, generates real energy savings and guarantees a quick return on investment.

Process stability is supported by modern technical solutions:

• a wide selection of corrosion-resistant materials,
• high energy efficiency in accordance with industry standards,
• modern pulsation dampers stabilizing the flow,
• advanced separators and solenoid valves for vacuum systems,
• SAFERUN system supporting work continuity,
• tight magnetic couplings eliminating the risk of leakage,
• Precise regulators for accurate dosing.

The right selection of the device is based on the analysis of hydraulic parameters and chemical resistance. When transporting aggressive acids, the spill-free design ensures the highest level of safety. Sophisticated technology allows for seamless integration into the plant's infrastructure, guaranteeing many years of uptime and low operating costs.