Technical paper by Erik Solfelt:

Thanks to its simple yet innovative design, the AODD pump has proven to be able to consistently meet the demands of chemical processors while building a reputation as a go-to pumping technology where basic fluid-transfer capabilities are required. The AODD pump, which possesses a stable of notable operational characteristics, has become a first-choice technology for chemical manufacturers who are searching for a pump that meshes cost-conscious air consumption with reliable and safe production rates.

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Energy efficiency and reducing the operating costs is important as well for user of drum pumps. With the development of the new MDx compressed air motors, Lutz has taken account of this requirement.

With the oil-free, 1000 watts air motor you can achieve the same delivery capacity with 20 % less connection pressure and 4 % less air consumption comparable to other products. The motors have a good start-up behaviour also with low pressure.

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Crane ChemPharma & Energy developed a new generation of air operated double diaphragm (AODD) pumps. The line named Depa DH is manufactured in cast stainless steel (316L). This new range will include five sizes that are certified to Atex Zone 0 and five that are certified to Atex Zone 1.

The DH pumps are developed for operations within industrial and chemical applications. Acc. a company’s information “the Depa DH pump features an optimized pump design that can improve efficiency by up to 57% and increase flow rate by up to 10%.”

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This 13 mm (½”) clamped metal AODD pump PS1 is equipped with the energy-efficient Pro-Flo Shift Air Distribution System and its clamped configuration allows for easier maintenance, diaphragm replacement and cleaning.

The footprint of this AODD pump matches that of the Wilden PX1, which enables direct replacement of a PX1 with no repiping necessary. With less components and 7% more efficient than the PX1, the backward capability of the PS1 makes it an easy way to enhance and upgrade existing pump performance.

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Wilden, focused on air-operated double-diaphragm (AODD) pump technology, announced the launch of its new e-commerce store.

The Wilden Store provides end users with an online shopping environment. Not only can end users easily find appropriate and authentic spare parts and accessories for their Wilden pumps, but they can also find comparable Wilden pumps based on competitor part numbers.

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The new TC pumps are fitted with LEAP – Low Energy Air Pump – technology used in AODD pumps to reduce the minimum operating air pressure by reducing internal losses and friction. LEAP uses a indirect system to detect the position of the diaphragm shaft controlling the diaphragm movement automatically.

The TC pump is able to start pumping at 0.1 bar without stalling. Key benefits are

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The Wilden Advanced FIT pumps feature bolted product containment and easier maintenance. No repiping necessary, the Advanced FIT pumps precisely fit bolt-to-bolt and pipe-to-pipe in existing fluid-handling piping systems. The FIT pumps come equipped with the wetted path that minimizes the number of fasteners and allows for single socket reassembly for faster, easier maintenance. These pumps also come equipped with the energy-efficient Pro-Flo Shift air distribution system.

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This new high-pressure pump series AHD/AHS are developed for applications up to 15 bar (218 psig) such as filter press applications.

The “D” in AHD stands for Duplex, which means the reinforcement of the drive pressure is more than 2:1 by the internal pressure boosting stage. This is achieved thanks to a maximum drive pressure of 7 bar (100 psig), which allows the AHD to build up discharge pressures up to 15 bar (218 psig). AHD Series pumps are available in three sizes (AHD 15, 25 and 40) with maximum capacities of 4, 10 and 20 m³/h (17, 44 and 87 gpm).

The new AHS Series, which does not include an internal pressure booster, features an extremely rugged housing making it suitable for higher discharge pressures. The “S” in AHS stands from Simplex, meaning the drive pressure is transferred to the medium in a ration of 1:1.

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The two new 1-1/2-inch (38 mm) high pressure bolted metal AODD pump models feature redesigned liquid paths to reduce internal friction to maximize output and efficiency. They are shear sensitive, dry-run capable, externally serviceable, completely submersible and comply with all CE and Atex requirements. These pumps also come equipped with the Pro-Flo Shift air distribution system.

The two new high pressure pump models are

• the HS400S, which is available in aluminum, and
• the HS430S, which comes in stainless steel.

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The Stallion series are developed for pumping fluids with high solid content. A shock-absorbing polyurethane screen base absorbs the impact from constant assault by solid particles. The pumps also feature a large internal clearance and flow-through design to keep the pump from clogging; an integrated suction strainer; and an altered ball/seat check valve assembly. These pumps are made for rugged utilitarian applications that require a robust design.

Stallion pumps now also come equipped with the Wilden Pro-Flo Shift ADS.

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