Engineering360 has asked its users about the latest design trends and features related to Centrifugal Pumps. They have also shared their product applications and tips on how to buy and use these products.
See the entire survey


Q:
What would your design or feature "wish list" be for this product?
48 answers
Answers:
In a perfect world, I would like: ready availability of spare parts, components made out of the same materials as that of original manufacture, pump construction materials that are true to type - not an approximation, serviceable electric motor bearings, scrapping of one-off non - standard mechanical and other seals used by some unscrupulous companies, a cut - away drawing and parts list showing every component and the standard description of the part, if it needs must be sourced from other than the original manufacturer,
~Kevin A, Service Manager and Sales, Ashfield, Australia
I would like to see pumps with higher efficiency. I would like to see submersible pumps with better NPSH. Many submersible pumps can not be used for dry pit application due to NPSH requirements.
~Franklin H, Project Manager, Indianapolis, IN
Corrosion resistance at low cost on high horsepower pumps where plastic is not usable. Efficiency to create lower HP needs, to reduce operational costs.
~John L, Sales Coordinator, Toronto, Canada
It is very difficult to replace mechanical seal and bearings. The "ideal" pump mechanical seal box must be reachable from outside like packing seal box.
~Hoang Xuan Niem, Managing Director, Ho Chi Minh City, Viet nam
High performance impellers that can pass .750 solids or greater. Bolted inspection ports to examine suction eye without removing lid.
~Randal, Technical Support, Odessa, TX
Have suction and discharge pressure gages installed for every centrifugal pump along with a copy of the manufacturer's pump curve.
~General Corporate Mgmt, Lacey, WA
Simple design with long component life, superior seal design and high degree of flexibility in flow and pressure range.
~John S, Sales Engineer, Quincy, IL
1) Better nonclogging properties 2) Better efficiency 3) Higher tolerance to cavitation 4) Lower NPSH required
~Engineering, Design, DUBAI, United Arab Emirates
It would be good if there are more options for centrifugal pumps suitable for brine water.
~Rica S, Process Engineer, Sydney, Australia
Reliable for wear- and corrosive resistant duty, 100% replacement WARMAN spares for AH, HH, M, L, G, SP model.
~Andrea Ma, Manufacturer, Shijiazhuang, China
Better availability of technical information, stock availability, and budgetary pricing.
~Chris F, Research & Development, Raleigh, NC
Design that will reduce cavitation problem and will enhance easy installation of pumps.
~Akinro I. Olajide, Project Manager, Akure, Nigeria
Self-priming capability, run-dry capability, variable speed, low-flow capability.
~Michael W, Development Engineer, Quincy, IL
Maximum parts interchangeability, high efficiency, reliable seals and bearings.
~Troy Z, Marketing/Sales, Denver, CO
No one feature. My application needs vary widely as a specifying engineer.
~Scott B, Engineering Consultant, Bozeman, MT
We want to design products with the exact parameters and quickly.
~Cuong Pham, Design Engineer, Haiduong city, Vietnamese
High efficiency, low NPSH, low speed pumps, with good materials.
~Richard H, Proprietor pump supply & manufacturing business, Warwick, Australia
Can be utilized for pumping black or white petroleum products.
~Harvey J, OIC Bay and River Barges operation., Angono, Rizal, Philippines
Water cooled submersible motor, super light weight.
~Engineering, Design, Somers, MT
Can achieve the given capacity and other specs.
~Romy D, Process Engineer, Las PiƱas, Philippines
A wide performance range with no overloading.
~Engineering Consultant, New Delhi, India
To combine high flow rate with high pressure.
~Ahmed G, Engineer, Alex, Egypt
Least NPSH, best efficiency, good sealing.
~Santosh Gupta, Engineer, Mumbai, India
Seal-less design with no packing required.
~Brian S, Process Engineer, Maple Grove, MN
Reliable operation Economical first cost
~Engineering, Process/Production, South Charleston, WV
More reliable seal less centrifugal pump
~Cleaf Ng, Marketing/Sales, Petaling Jaya, Malaysia
Mechanical seals and oil bath bearings.
~Bradley D, Facilities Manager, Laurel, MD
Self Protection against loss of water
~Dick T, Engineer, Nelson, New Zealand
Wet rotor types at higher GPM ratings.
~Paul N, Stationary Engineer, Antioch, CA
maintenance free/friendly, seal less
~Shyam R, Project Manager, Hyderabad, India
Most Energy Savings / Most Efficient
~Engineering, Consulting, Dubai, United Arab Emirates
Maintenance-free, long run service.
~Moshe B, Workshop Manager -Maitenance Dep., Haifa, Israel
Lower Horsepower and Higher Heads
~Chad N, Technical Sales, Timmins Ontario, Canada
CO2 return (Back into the earth)
~Purchaser, Portland, OR
I would fix the mechanical seal.
~Aaron S., Marketing/Sales, Santa Ana, CA
Longer lasting mechanical seals.
~Bill K, Engineering Consultant, Stoughton, MA
Working with large -ve NPSH
~Arvind K, Engineering Consultant, Pune, India
Improved bearings and seals.
~Gilvan C., Engineer, Salvador, Brazil
Higher pumping efficiency.
~Robert L, Alluvial Consultant, Rotterdam, Netherlands
Shaft rigidity, stiffness
~IONEL DUTU, Faculty/Staff, PLOIESTI, RO
Easier seal replacement.
~Ken G, Contractor, Petrolia, Canada
Compact & light weight
~Cheng Hoe Goh, General Management, Singapore, Singapore
Solar & Wind power
~Engineering, Other, St Catherinens, Canada
Cheap & reliable
~Uzzal Mistri, Engineer, Dhaka, Bangladesh
Low section head
~Pal K, Engineering Consultant, Budapest, Hungary
Plastic pumps
~Wadehra VK, Engineering Consultant, Chandigarh, India
Easy to clean
~Jan S, Engineering Consultant, Oakland, CA
Low NPS
~ENG S, Engineering Consultant, RIYAD, SAUDIA

Top
Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a centrifugal pump?
39 answers
Answers:
Get help from engineering to answer the unknown. Good performance is only as good as good design. Often times folks don't pay enough attention to the NPSHA for the pump. You know the rate you want and how much head the pump should develop, but not always does one look close at pressure drop on the suction side of the pump. Look at your selected pump curve for the NPSHR and compare it to the NPSHA. A should always be greater.
~Randal, Technical Support, Odessa, TX
Selection. Know what flow and pressure are required at the delivery point and what the intervening pipe works are. Know the temperature of the product to be pumped and what the chemical components are.
~Kevin A, Service Manager and Sales, Ashfield, Australia
Select the appropriate pump for the application, being mindful of the operational needs and system requirements. 99% of the time, it is not the pump that is the source of the problem.
~Troy Z, Marketing/Sales, Denver, CO
The selection should be based not only on the specific speed criteria, but the type of application and characteristics of the fluid to be pumped e.g. sewage with debris.
~Engineering Consultant, New Delhi, India
I really think that correct sizing is the most important part of buying a centrifugal pump. If you get this wrong, everything else will be irrelevant.
~Rica S, Process Engineer, Sydney, Australia
They should have to follow the guidelines of the manufacturer and they should have to have training or let them seek the experts advice.
~Engineering, Other, St Catherinens, Canada
The "not good" engineer chooses pumps with big "save reserve". User must pay for electricity much more than consulting cost. Let work with experts.
~Hoang Xuan Niem, Managing Director, Ho Chi Minh City, Viet nam
Look at the supplier's worldwide support if doing jobs out of country. Look into operational costs as they will apply to your client.
~John L, Sales Coordinator, Toronto, Canada
Select the pump for the rated duty, but ensure that the pump has the capabilities for lower duties that it may be required to do.
~Hector J, Engineering Consultant, Sydney, Australia
Too often people look at standard flow rates and do not look at the need for surge flows and pressure drop at high flow rates.
~William S, Project Manager, Maryville, TN
Specification data of the mining application should be as detailed as possible, for pump correct and efficient selection.
~Andrea Ma, Manufacturer, Shijiazhuang, China
Users of centrifugal should select properly and know the suction requirement (suction head requirement) before any purchase. They should also take into consideration the power supply of the area the pump will be used. The pipe work and the foundation or plinth constructed should be properly
~Akinro I. Olajide, Project Manager, Akure, Nigeria
Process parameters including fluid data given in process data sheets should be carefully examined while selecting the pumps.
~Shyam R, Project Manager, Hyderabad, India
Appropriate selection and installation of the pump, including leveling and alignment, will avoid large operation problems.
~Ahmed G, Engineer, Alex, Egypt
Work with any pump manufacturer, by providing all information required, in order to size the right pump.
~Chad N, Technical Sales, Timmins Ontario, Canada
Pump must choose appropriate parameters, pump manufacturing materials suitable work environment ...
~Cuong Pham, Design Engineer, Haiduong city, Vietnamese
Cheap is cheap for a reason and that normally manifests itself after midnight on a holiday weekend.
~Richard S, Facilities Manager, El Gorah, Egypt
Talk with the pump manufacturer representative and look for assistance on the specific application.
~Gilvan C., Engineer, Salvador, Brazil
Determine a Flow & Head first. EVERYTHING else is dependent of these two parameters.
~Will S., Sales Manager, Pompano Beach, FL
Heed the manufacturer's advice when selecting, installing and maintaining your pump.
~Michael W, Development Engineer, Quincy, IL
Listen to the Tendering Engineers at the OEM. They know more than you do.
~Purchaser, Portland, OR
Packing is a concern, make sure that it is good for the rpms and temperature.
~Sales & Service, Crossville, IL
Be sure that you obtain exact rpm driving your centrifugal pumps.
~Harvey J, OIC Bay and River Barges operation., Angono, Rizal, Philippines
Please provide a spec sheet with required specification noted.
~Aaron S., Marketing/Sales, Santa Ana, CA
1- Must select pump material 2- NPS must calculate good
~ENG S, Engineering Consultant, RIYAD, SAUDIA
Oversizing can cause various unexpected problems.
~Technical Support, Baden, PA
Do not let pump salespeople dictate your needs.
~Robert V, Research & Development, Amagansett, NY
Purge the system, size the pump correctly.
~Engineering, Design, Grand Island, NY
Must see the end users and site conditions
~Wadehra VK, Engineering Consultant, Chandigarh, India
Ask experts, not only sellers.
~Moshe B, Workshop Manager -Maitenance Dep., Haifa, Israel
Plot your load case on the pump curve.
~Chris F, Research & Development, Raleigh, NC
Select the correct pump for the job.
~Franklin H, Project Manager, Indianapolis, IN
oil bath bearings .
~Bradley D, Facilities Manager, Laurel, MD
Do not try to multi-task a pump.
~Richard H, Proprietor pump supply & manufacturing business, Warwick, Australia
Provide correct application.
~Cheng Hoe Goh, General Management, Singapore, Singapore
I would recommend lower RPM
~Cleaf Ng, Marketing/Sales, Petaling Jaya, Malaysia
Suction line is paramount.
~Dick T, Engineer, Nelson, New Zealand
Understand NPSH.
~Scott B, Engineering Consultant, Bozeman, MT
Efficiency
~Uzzal Mistri, Engineer, Dhaka, Bangladesh

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