How to Select Chemical Pumps Image Credit: All-Flo Pump Company, LLC. | Gorman-Rupp Industries | Clark Solutions   Chemical pumps are pumps designed to move chemicals or chemical slurries. They are designed and constructed to handle substances with varying levels of viscosity, corrosiveness, and abrasiveness. Some of these pumps are also metering pumps, which provide flow measurement and control for applications which require precise volumes...
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Q & A on Chemical Pumps

We asked our users for their input on Chemical Pumps. Here are the results of 96 users familiar with Chemical Pumps.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing chemical pump design?
15 answers
Answers:
µ-Process Dosing Pumps leakage free, pulsation free, high accuracy flow from 1µl/h up to 100l/h. Pressure 0-100 bar. Fluid touche Materials Stainless Steel-Teflon, Hastelloy-Teflon and Metalfree.
~Willi H, Design Engineer, Siegen, Germany
I do not know if it is new but the lining methods of steel materials and the magnetic coupling technologies are very important ones.
~Viorel P, Engineering Consultant, Ploiesti, Romania
Better materials of construction and seals or seal-less to fit application.
~Franklin H, Pump Project Manager, Indianapolis, In, IN
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Q:
From your perspective, which companies are creating the most innovative chemical pumps?
11 answers
Answers:
I do not know all but I trust in ASV-Stuebbe pumps, Geko pumps and a few German suppliers for dosing pumps!
~Viorel P, Engineering Consultant, Ploiesti, Romania
Centrifugal - Flowserve, ITT Goulds positive displacement - IDEX, Wilden (Dover)
~Art E, Engineering Consultant, Waterloo, NY
MMT GmbH Micro Mechatronic Technologies
~Willi H, Design Engineer, Siegen, Germany
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Applications and UseTop

Q:
What are some of the applications you have used chemical pumps for?
21 answers
Answers:
The applications are mainly in the area of Fluidic Chips (<=10bar) and the continuous micro reaction Technology in the Fine chemical Industry and the Pharma industry. Nearly all Institutes and Companies in Middle Europe which are working with micro reaction Technology are using our µ-Process Dosing Pumps.
~Willi H, Design Engineer, Siegen, Germany
I almost don't use them. My clients do it Pharma, PH control, transpassing liquids from one container to other. Dose and manual modes, on line production or lab. use, etc.
~Rodolfo R, Design Engineer, Buenos Aires, Argentina
@ Rock Island Refinery and Vertellus with a variety of chemicals. Lutz Pumps for anything that comes in a drum. Sethco for Plating applications.
~Franklin H, Pump Project Manager, Indianapolis, In, IN
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Q:
Please share with us any “non-standard” applications that chemical pumps have been used for.
10 answers
Answers:
Media wise: Fluid: Sea water with a salt content of 4% combined with chemicals as listed below. Misc. chemicals: HCIO (hypochlorous acid) --- confirmed as 10% O3 (ozone) --- unknown PPM H2O2 (hydrogen peroxide) --- not more than 10% ClO2 (chlorine dioxide) --- Unknow % HBrO (bromide) --- unknown % BrO (hypobromite ion) --- unknown %
~Mark Wang, Purchaser, Kaohsiung, Taiwan
Centrifugal titanium pump for high pressure (20-23 bar) ammonium carbamate pumps for reactor feeding, instead of existing piston pumps!
~Viorel P, Engineering Consultant, Ploiesti, Romania
Honey market, Argentinian "dulce de leche" very dense indeed. Food and beverage, minery handling of toxic products.
~Rodolfo R, Design Engineer, Buenos Aires, Argentina
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a chemical pump?
8 answers
Answers:
Yes. A personal experience. 30 years ago I was explaining how a peristaltic pump works to one operator. I start and stop it many times. The output was a silicon hose which valve was closed. It exploded shaking ammonium to both. We can not BREATH nor see. Fortunately somebody came in our help and with a fire hose gave us an intense shower. I was really scared. Result: one week with my eyes closed and a little pain. No more. Should the tank have had the normal product (silver nitrate), at this moment I would be a blind man. Advice: Safety First Always.
~Rodolfo R, Design Engineer, Buenos Aires, Argentina
It`s important to choose resistant materials for the fluids. To design the suction pipe very carefully, dependent of the viscosity, the steam pressure of the fluid, cavitation, etc.
~Willi H, Design Engineer, Siegen, Germany
Yes .. some company here used the wrong material body of the chemical pump, to pumping H2SO4 , and caused contamination to the lake of ETA and the operator had serious burns.
~Lourdes Massulo, General Management, Sao Paulo, Brazil
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
12 answers
Answers:
Competitive pricing with one single thermoplastic to handle as many types of media as possible; wide temp. range. Simple and inexpensive mechanical seals.
~Mark Wang, Purchaser, Kaohsiung, Taiwan
Dry run capability, 100% chemical resistance, wide range capability, reliability and low operational/maintenance costs!
~Viorel P, Engineering Consultant, Ploiesti, Romania
Integrated Sensoric: Pressure, Flow rate, Temperature. Flow chemistry plant. (for the Table.)
~Willi H, Design Engineer, Siegen, Germany
Durability, flow transport parameters, suction capacity, maintenance free operation
~Béres Deák L, Engineering Consultant, Budapest, Hungary
More friendly human interface with no trained personnel
~Rodolfo R, Design Engineer, Buenos Aires, Argentina
Centrifugal chemical pneumatic pump will be very good
~Lourdes Massulo, General Management, Sao Paulo, Brazil
Flexibility between minimum and maximum flow rates.
~Piet V, General Management, Potch, South Africa
ATEX and food grade materials, sanitary
~Ted S, Research & Development, Paradise, CA
Low flow capability for centrifugals
~Art E, Engineering Consultant, Waterloo, NY
Nothing at this time.
~Franklin H, Pump Project Manager, Indianapolis, In, IN
Without leakage
~Orzan Marian, Marketing/Sales, Bucharest, Romania
Auto priming,
~Joe S, SAGD Oil Facility Maintenance Coordinator, Ft. McMurray, Canada

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of chemical pumps?
9 answers
Answers:
To reject from the start the cheapest products only because of price, to think about the costs involved for the next 3-5 years! To be very careful when are using the same pump for different chemicals (to check the suitability of materials, to clean it/dry it between and so on).
~Viorel P, Engineering Consultant, Ploiesti, Romania
Is very important to know the products and information about the viscosity, density, pH, and discharge. If we don't give the attentions for it must be very dangerous to the process, to the operator ..etc
~Lourdes Massulo, General Management, Sao Paulo, Brazil
Create pump/system curve for entire range of intended operation. Instead of specifying one operating point only, share system characteristics with vendors during procurement process.
~Art E, Engineering Consultant, Waterloo, NY
Be careful of self-priming applications where the suction pressure is reduced too low.
~Piet V, General Management, Potch, South Africa
Use common sense. Ask about what others are using for this application.
~Franklin H, Pump Project Manager, Indianapolis, In, IN
To give advice it`s necessary to know a lot about the application.
~Willi H, Design Engineer, Siegen, Germany
Selection after high discharge pressure and flow
~Orzan Marian, Marketing/Sales, Bucharest, Romania
As before
~Béres Deák L, Engineering Consultant, Budapest, Hungary
THINK
~Rodolfo R, Design Engineer, Buenos Aires, Argentina

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using chemical pumps?
10 answers
Answers:
Define application range (min, avg, max). Centrifugal pumps are very sensitive to where they're actually operated, not necessarily the design point. Maintenance costs are significantly higher for off-BEP operation.
~Art E, Engineering Consultant, Waterloo, NY
The buyer must know the different brands and kind of the pump, generally they do not know the best brands or kind, they buy by price.
~Lourdes Massulo, General Management, Sao Paulo, Brazil
Make sure the salesman knows all about the application. There is a lot of information required to select the proper pump.
~Franklin H, Pump Project Manager, Indianapolis, In, IN
Hydraulic design of the system has a very high importance, do not trust in calculations made by the buyer.
~Béres Deák L, Engineering Consultant, Budapest, Hungary
You must know very well what for your pump should be use for. Don´t waste your money.
~Rodolfo R, Design Engineer, Buenos Aires, Argentina
To ask advice before from specialists, at least from the well known producers!
~Viorel P, Engineering Consultant, Ploiesti, Romania
To give advices it`s nessessary to know a lot about the application.
~Willi H, Design Engineer, Siegen, Germany
Beware of suction/inlet blockages from the product.
~Piet V, General Management, Potch, South Africa
Spend the cash, you get what you pay for
~Joe S, SAGD Oil Facility Maintenance Coordinator, Ft. McMurray, Canada
Choose quality, not low price.
~Orzan Marian, Marketing/Sales, Bucharest, Romania


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