Diaphragm Pumps Ltd

Topair Air Operated Double Diaphragm (AODD) Pumps are becoming the most common pumps for use when Only Air is available or when pumping solid laden liquids or slurries. Topair Diaphragm Pumps have no seals as the diaphragm acts as the barrier between the Liquid side and the drive side of the pump. When the liquid pressure reaches the air pressure, the Topair pump reaches a point of balance and stalls without the need for bypasses or overload protection.Topair Diaphragm Pumps can run dry indefinately and have the ability to self prime to 7 metres or more in some cases. They can handle viscosities up to 20000 Centipoise as standard and some Topair models can handle cPs into the 100's of 1000's. Topair Pumps are some of the most reliable AOD's in the marketplace, Self Priming, Dry running, Intrinsically safe, these are just a few of the features of Topair Diaphragm Pumps. Models include pumps for pumping hygienic products, aggressive chemicals aswell as standard industrial duties. High pressure models are also available for filter press applications or for pumping into closed systems. ATEX regulated Topair pumps are offered for Zone 1 environments. Topair Pumps and spares are available from Diaphragm Pumps Ltd, Stoke On Trent, England. As one of the largest stockists of pumps and spares in Europe, we hope we can supply all your Topair Pump needs.

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• Air Control
• Pulsation
• Diaphragm Gauge
• Batch Controllers
• Level Control
• Spill Prevention

Calculators

• Pressure Loss
• Pipe Sizing
• Conversion Tables
• Calculator
• Compatibility

TopAir-series

The TopAir-series is one of the most complete lines of Air Operated Double Diaphragm pumps on the market. With eight sizes up to 800 l/min in a wide range of material combinations Topair can offer pump solutions for all types of industries.

Features/Benefits

• High performance - long life diaphragm
• Abrasive and corrosive materials handled without problems
• Able to pump solid particles
• Wide range of material combinations
• Low and high viscous liquids, alkalis or acids
• Dry start - self-priming
• Can run dry without damage or overheating
• Flexible installation
• Can be installed with flooded suction condition
• Possible to submerge
• Air drive - sparkless conditions
• Explosion proof
• Variable Flow control
• High capacity
• Reliable operation - no-stalling air valve
• Simple design
• Easy maintenance

Suitable for

TopAir will pump any liquid which flows or moves through a pipe - from clear water and volatile liquids to highly viscous and abrasive or chemically aggressive liquids.

Some examples of media handled by TopAir: clays, glazes, acids, alkalis, latex, solvents, cement slurry, sump and pit drainage, electroplating solutions, milk of lime, oil, polishing slurries and pastes, varnish additives, coal sludge, grouting motor, resins, wood preservative, glue, pulp and paper slurry, ink, petroleum, benzine, ointment, alcohol, waste water, sewage.

General Technical data for TopAir-series

• Wetted parts: Polypropylene, Poly Vinyl Chloride, Kynar^®, Aluminium, Stainless Steel, Cast Iron, Teflon^®
• Diaphragms: Nitrile, Neoprene, Nordel^® Viton^®, Hytrel^®, Santoprene^®, Teflon^®
• Max. differential pressure: 7 bar
• Max. temp: 60-120°C, depending on materials

Performance overview

• Max capacity l/min Max size solids mm
• TA-5 100 .2
• TA-10 20 1
• TA-15 45 1
• TA-20 100 2
• TA-25 160 3
• TA-40 450 7
• TA-50 650 8
• TA-80 800 10

Accessories
A range of accessories are available for the TopAir line.
These include the following:

• Pulsation damper
• Diaphragm leak sensor
• Speed generator EDP1
• Electronic stroke counter for dosing
• FRL - Filter, Regulator and Lubricator
• Flange connections
• Pneumatic stroke counter for preventative maintenace
• Air motors
• Drum pump conversion kit for TA-20