Dulco Flex Pumps Dulco Flex 1 AGENDA Peristaltic

Dulco. Flex Pumps Dulco. Flex 1

AGENDA § § § § § Peristaltic Pump Theory Peristaltic Pump Features & Benefits Peristaltic Pump Limitations Roller versus Shoe Technology Hose life Dulco. Flex product line Dulco. Flex features Applications Summary Dulco. Flex 2

Peristaltic Pump Theory Per·i·stal·sis (per·i·stal·ses) n. pl. The wavelike contractions of a tubular structure that propel the contents forward by alternate contraction and relaxation. Dulco. Flex As the rotor of the pump rotates the fluid is gently pushed forward until it is expelled through the discharge. In a peristaltic pump this occurs twice per revolution. 5

Peristaltic Pump Theory Peristalsis is regarded as one of the simplest and most efficient means of pumping fluids. Dulco. Flex 6

Peristaltic Pump Features & Benefits Dulco. Flex 7

Peristaltic Pump Features & Benefits Seal-less Design • With the hose being the ONLY contact point of the material, there is no need for any sealing devices whatsoever! • Other PD pumps require mechanical seals, packing glands or ball checks. Dulco. Flex • Since the fluid is held hostage inside the hose, no mechanical components are susceptible to corrosion and wear. 8

Peristaltic Pump Features & Benefits Accurate dosing. • Because of such a high volumetric efficiency, the hose and tubing pumps make excellent dosing and metering pumps. • With repeatability they are accurate to +/- 1% when dosing and metering. Dulco. Flex 9

Peristaltic Pump Features & Benefits Self Priming • The peristaltic hose pump is the ONLY PD pump capable of pulling a “dry” vacuum of 29. 5 feet (9 meters) making it the best suction lift PD pump available. Dulco. Flex 10

Peristaltic Pump Features & Benefits Reversible. • Since there are no sealing devices required for a hose or tubing pump, they can be run in either direction. • Reversing a pump can be an effective way to clear suction line blockages. Dulco. Flex 11

Peristaltic Pump Features & Benefits Low maintenance costs. • The only repair parts required for peristaltic pumps are hoses or tubes. (NOTE: Shoe pumps also require replacement lubricant. ) • A typical hose/tube replacement takes less than 2 hours and the pump does not need to be removed for service. Dulco. Flex • Most replacement tubes/hoses cost less than 10% of the purchase price of the pump! 12

Peristaltic Pump Features & Benefits Run Dry • Some PD pumps cannot run dry or risk catastrophic failure. • Hose pumps are totally capable of running dry for an undetermined amount of time. Dulco. Flex • The peristaltic hose pump can also handle fluids with air entrained or gases. 13

Peristaltic Pump Features & Benefits Gentle pumping action. • Since hose pumps turn at slow speeds, the product is gently pushed through the hose with minimal turbulence. • The hose pump is one of the best pump technologies available for minimizing damage to shear sensitive materials such as water based paints and flocculants. Dulco. Flex 14

Peristaltic Pump Features & Benefits Abrasion resistant. • Hose life is NOT related to a products abrasive qualities. • Due to the slow speeds and gentle pumping action the hose pump is capable of pumping some of the more abrasive liquids such as ink, sludge, and Ti. O 2 Dulco. Flex 15

Peristaltic Pump Features & Benefits No slip. • Slip as defined is “the action of the positive displacement pump to allow some of the pumped liquid to be forced back into the cavity which is now filling with product. ” Dulco. Flex • Hose pumps are very close to being 100% volumetric efficient as slip is virtually eliminated by the complete compression of the hose. 16

Peristaltic Pump Limitations Dulco. Flex 17

Peristaltic Pump Limitations § There a limited amount of elastomeric materials available for hose manufacturing. Inevitably there are some chemicals that hose pumps will not be able to be used for. § Example: Toluene is not compatible with any rubber products associated with hose pumps. Dulco. Flex § Sizing. Compared to other PD pump technologies, hose pumps have a large footprint. 18

Peristaltic Pump Limitations § Maximum flow rates typically are around 230 gpms. § Temperature is restricted based on hose selection. The highest temperature condition is 210º F. § There are pressure limitations based on pump speed. The faster the pump speed the lower the output pressure. Maximum pressure for Dulco. Flex hose pumps is approximately 232 psi. Dulco. Flex 19

Peristaltic Pump Limitations Pulsation § All peristaltic pumps pulsate. This pulsation can affect sensitive in-line equipment such as flow meters and can cause excessive vibration in pipe lines. § It is recommended that a pulsation dampening device be installed near the pump discharge. Dulco. Flex 20

Roller versus Dulco. Flex Shoe Technology 21

Roller versus Shoe Technology SLIDING SHOE TECHNOLOGY • A set of fixed shoes slide over the surface of the hose causing it to compress the hose twice per revolution. • Since the compression causes friction heat, the chamber is filled with a glycerin based food grade lubricant. Dulco. Flex 22

Roller versus Shoe Technology ROLLER TECHNOLOGY • Rollers are mounted on permanently greased bearings. • This allows the rotor to rotate smoothly during compression. • The hose and outer roller surface are lubricated with silicon grease which reduces friction creating a lower starting torque, lower operating torque and less mechanical stress on the hose. Dulco. Flex 23

Roller versus Shoe Technology • Because of reduced hose stress, roller pumps can increase hose life by 30% over shoe compression pump hose life! • Because of reduced torque, the roller pumps typically consume less HP. • Roller technology is limited to 116 psi (8 bar) operating pressures. Shoe technology is suitable for operating pressures to 232 psi (16 bar ). Dulco. Flex 24

Roller versus Shoe Technology § Shoe pumps have a difficult time maintaining system pressure when operated below 3 rpms. However, a similarly sized roller pumps can maintain system requirements at speeds below 1 rpm! Dulco. Flex 25

Hose Life Dulco. Flex 26

Hose Life Factors affecting hose life: § § § Speed Temperature Process chemical Discharge pressure Suction conditions Dulco. Flex 27

Hose Life SPEED KILLS! § The single biggest impact on a hoses life is speed. § With a hose life expectation of 10, 000 restitutions before performance decline, you can see how the proper selection of the pumps speed is so critical. § 10, 000 / 2 / pump rpm / 60 = approximate hose life. § 10, 000 / 2 / 40 / 60 = 2083 hrs. § 10, 000 / 2 / 30 / 60 = 2778 hrs. Dulco. Flex By selecting a pump 10 rpms slower, the hose life expectation increases by 25%!!! 28

Hose Life Typical hose life curve – DFC pumps Dulco. Flex 29

Hose Life Temperature § Higher operating temperatures can cause the hoses to swell. § This makes it more difficult to compress the hoses. § Dulco. Flex hoses are limited to 175º F on the NR, NBR and Hypalon. § The EPDM hose has a temperature limit of 210º F Dulco. Flex 30

Hose Life Process Fluid § § Peristaltic pumps have a limited availability of hose materials. Selecting the wrong material can cause premature failure of the hose/tube. § For example: § A fluid containing oils or fats/greases is not compatible with natural rubber. NBR would be the hose of choice. § There are numerous chemical compatibility charts available to help select the correct hose material. Dulco. Flex 31

Hose Life Suction Conditions § Extremely high suction lifts can cause premature wearing of a hose. § At greater lifts, the hose has a hard time restoring itself to it’s original shape. § If the hose does not reconstitute itself back to it’s original shape, there is a reduction in the flow. § A vacuum device can be installed to help the hose reclaim its original shape. Dulco. Flex Discharge Pressure § Extremely high discharge pressures make it very difficult for the roller or shoe to completely compress the hose. § Slip can increase causing a decline in performance 32

Hose Life § Dulco. Flex reinforced hoses are manufactured to very specific engineered tolerances. § The nylon reinforcement is hand wrapped assuring good quality control. § The frequency of the wrap is also important. § Increasing the frequency of the wrap extends hose life. Dulco. Flex 33

Hose Life Dulco. Flex Competitors hose. Less frequency of reinforcements Dulco. Flex hose. More frequency of reinforcements – longer life! 34

Hose Life Dulco. Flex reinforced hose available in: § § Natural Rubber (175º F max) Nitrile Buna Rubber (FDA approved) (175º F max) EPDM (175º F max) Hypalon (175º F max) Dulco. Flex tubing available in: Dulco. Flex § Norprene (30 psi max) § Tygon (30 psi max) 35

Dulco. Flex Product Line Dulco. Flex 36

Dulco. Flex Product Line DFAa Series DFDa Series DULC DFBa Series Dulco. Flex O f le x DFCa Series 37

Dulco. Flex Product Line DFAa – Tubing Pump Series § § § § § Flow range: . 05 gph to 190 gph. Working pressure 30 psi max. 3 roller design. Suction lift to 15’. Tube sizes: §. 8 mm, 1. 6 mm, 2. 4 mm, 3. 2 mm, 6. 4 mm, 8. 0 mm Wall thickness: 1. 6 mm & 2. 4 mm Tube materials: Norprene, Tygon. Easy tube replacement. Reversible. Low cost maintenance. Dulco. Flex 38

Dulco. Flex Product Line DFBa Roller Pump Series Uniquely designed for reinforced hose OR tubing! § Heavy duty pump. § Flow range: 0. 1 gph – 390 gph (6. 5 gpm) § Suction lift approximately 27’ § Viscosity to 15, 000 cps § Max pressure: § hose – 115 psi § tube – 30 psi § Sizes available: § 10 mm, 13 mm, 16 mm § 19 mm, 22 mm NO FILL LUBRICANT REQUIRED Dulco. Flex 39

Dulco. Flex Product Line DFCa Series Roller Hose Pump § § § § § Medium/High flow Heavy duty applications. Flow range: 1. 3 gpm – 132 gpm. Max pressure: 115 psi. Self priming to 27’. Viscosities to 60, 000 cps Roller technology. Cartridge type bearing system. Reversible rotation. Available sizes: § 30 mm, 40 mm, 50 mm, 60 mm, 70 mm NO FILL LUBRICANT REQUIRED! Dulco. Flex ex o. Fl c l Du 40

Dulco. Flex Product Line DFD Series Shoe Compression Pumps § § § § § Medium/High flow Heavy duty applications. Flow range: 1. 3 gpm – 225 gpm Dulco Flex Max pressure: 230 psi. Self priming to 29’. Viscosities to 60, 000 cps Shoe technology. Cartridge type bearing system. Reversible rotation. Available sizes: § 25 mm, 32 mm, 40 mm, 60 mm, 70 mm, 80 mm, 100 mm Dulco. Flex 41

Dulco. Flex Hose Pump Features Dulco. Flex 42

Hose Connection § The majority of hose leaks occur closest to the discharge connection. § The hose acts like a small “accordion” and because the hose is under system pressure at this point – most failures occur there. Dulco. Flex 43

Hose Connection Several hose pump manufacturers have “external” hose connections. External hose failures can create environmental and safety hazards. Dulco. Flex 44

Dulco. Flex Features Introducing the Dulco. Flex Disaster Proof Connections. Dulco. Flex § § The flange housing is cast right into the pump. A beveled “C” clamp is attached to the hose. The insert is installed into the hose. The flange assembly is then attached which closes the “C” clamp firmly around the hose. § Any leaks are now contained within the pump. 45

Dulco. Flex Features Heat dissipation § Shoe compression pumps create a tremendous amount of heat. § As we have learned, heat can affect hose life (shorten). § Dulco. Flex has designed our pumps to maximize heat dissipation. § Heat sync tabs have been cast into the housings of our pumps. § Keeping the hoses cool helps extend their life. Dulco. Flex 46

Applications Municipal applications Clean water: § Chemical transfer § Chemical feed § Chemical metering Dulco. Flex Dirty water: § Sludge transfer § De-watering feed § Chemical transfer § Chemical feed § Chemical metering 47

Applications Industrial Markets § § § § § Mining Chemical Pulp & Paper Food Ceramic Cosmetics Slaughter houses (blood) Breweries/Wineries Fish Industrial wastewater Dulco. Flex 48

PD Pump Comparison Feature Pro Cav Lobe Double Disc Piston Hose Flow 2000 gpm 600 gpm 550 gpm 230 gpm Pressure 1500 psi 150 psi 40 psi 130 psi 230 psi Suction lift Excellent OK to Poor OK OK Excellent Shaft seal Mech/pack Ball checks None Run dry Poor Limited Good OK Excellent Pump air entrained fluid OK OK Good OK Excellent Volumetric Efficiency Good OK OK Excellent Ease of repair Poor Good BAD! Excellent Repair cost Poor Good BAD! Good Dulco. Flex 49

Summary Dulco. Flex peristaltic pumps: § § § § § Low maintenance Great suction lift capability Seal-less design Reversible Abrasion resistant Accurate dosing/metering Disaster proof hose connections 21 different models available Flows to 225 gpm Pressures to 230 psi Dulco. Flex 50

Pro. Minent USA Thanks you! THANK YOU FOR YOUR TIME! Dulco. Flex 51