DESMI - Diaphragm Pumps - Brochure

INDUSTRYDESMI Diaphragm Pumps – Geared to individual solutionsPROVEN TECHNOLOGYAir valve technology is the heart of the air-powered double dia-phragm pump and determines reliability. The DESMI diaphragm pumps hold three patents on its field proven valve and enjoys a superior reputation throughout the industry.DESMI DIAPHRAGM PUMPS1. Handles a wide variety of fluids with high solids content: No close fitting or rotating parts so liquid with high solids content and/or size can be easily pumped. 2. Self priming: The DESMI diaphragm pumps de-sign (incorporating internal check valves) allows for high suction lift even at dry start-up and with heavy fluids. 3. Ability to run dry: No close fittings or sliding parts are at risk - the pumps can run dry with-out getting damaged. 4. Variable flow rate and discharge pressure: The DESMI diaphragm pumps will run at any setting within their operating range simply by adjust-ing the air inlet pressure and system conditions. One pump can fit a broad spectrum of applica-tions. 5. Portable/simple installation: The DESMI dia-phragm pumps transport easily to the applica-tion site. Simply connect your air supply line and liquid lines and the pump is ready to per-form. There are no complex controls to install and operate.6. Dead head: As the discharge pressure can nev-er exceed the air inlet pressure, the discharge line can be closed causing no damage or wear. The pump will simply slow down and stop. 7. Shear sensitive: The gentle nature and minimal parts contact with the liquid make the DESMI diaphragm pumps an excellent choice for shear sensitive fluids. 8. Explosion proof: The DESMI diaphragm pumps are operated by means of compressed air, therefore, they are intrinsically safe. 9. Submersible: If external components are com-patible - the DESMI diaphragm pumps can be submerged in the liquid by simply running the exhaust line above the liquid level. 10. Pumping efficiency remains constant: There are no rotors, gears, or pistons which wear over time leading to the gradual decline in perform-ance/flow rate.Ten good reasons for choosing a DESMI Diaphragm Pump:Pump series that cover a wide variety of liquids.. for more detalied information on the DESMI Diaphragm Pumps, please visit our website: www.desmi.comMax capacity I/minMax pressure MPaMax size solids mmDDS-05 10 0.7 0.2DDS-10 20 0.7 1DDS-15 45 0.7 1DDS-20 100 0.7 2DDS-25 160 0.7 3DDS-40 450 0.7 7DDS-50 650 0.7 8DDS-80 800 0.7 10Performance overviewRubber compounds Nitrile (NBR) Temperature range: 0°C to 70°CEstimated 10 million strokesExcellent for oil/petroleum based fluidNeoprene (CR)Temperature range: 0°C to 70°CEstimated 10 million strokesExcellent elastomer for use in non-aggressive applicationsGood for abrasive materialNordel® (EPDM)Temperature range: -20°C to +80°CEstimated 10 million strokesGreat for extremely cold applicationsGood resistance to acids and causticsViton® (FPM) Temperature range: -10°C to +120°CEstimated 3 million strokesExcellent for aggressive fluids such as aromatic or chlorinated hydrocarbons and acids.Good for high temperature applicationsThermoplastic compoundsHytrel® (TPEE)Temperature range: 0°C to 80°CEstimated 15 million strokesExcellent general purpose/durable diaphragmLongest life in non-aggressive applicationsSantoprene® (TPO)Temperature range: 0°C to 100°CEstimated 15 million strokesExcellent general purpose/durable diaphragmTeflon® (PTFE)Temperature range: 0°C to 100°CEstimated 30 million strokes for 1/4” pumpsEstimated 10 million strokes for 3/8” to 1/2” pumpsEstimated 3 million strokes for 3/4” to 3” pumpsExcellent choice for pumping highly aggresive fluidsHomegeneous PFTEDiaphragm materialsPlastic pumps in general are recommended for strong acids and caustics but not recommended for high temperatures or slurries. Metal pumps in general are good for abrasion resistance, sol-vents, hydrocarbons, and high temperature applications.Polypropylene (PPG)Temperature range: 0°C to 60°CGood chemical resistanceLight weightNot resistant to petroleum based solventsGlass filledKynar® (PVDF) Temperature range: 0° to 80°High chemical resistanceCarbon filledPoly Vinyl Chloride (PVC)Temperature range: 0°C to 60°CVery good resistance to acids and alkalisAluminium (ADC-12/AC2A-F)Used in many non corrosive, non-abrasive applicationsLight weigtStainless Steel (SCS14/SUS316)Used in chemically active fluidsHigh abrasion resistanceCast Iron (FC) Used in a variety of non-corrosive and slurry applicationsTeflon® (PTFE) Temperature range: 0°C to 80°Inert to most chemicals100% Virgin PTFEMaterials of wetted partsTypical applications• Ceramics• Chemical Industry• Construction• Electronic Industry• Environmental Protection• Machine Industry• Mining• Paint and Lacquer Industry• Petrochemical Industry• Pharmaceutical Industry• Plating• Power Stations• Waste WaterYou can read more about our pump solutions at www.desmi.comwww.desmi.comYou can read more about industry solutions at www.desmi.comDEFENCE & FUELOIL SPILL RESPONSEINDUSTRY UTILITYMARINE & OFFSHORE