- December 26th in observance of Christmas
- January 2nd in observance of New Years
Friday, December 23, 2016
Wednesday, December 21, 2016
We’re excited where this distinctive looking self-primer fits in out line. Along with other self-primers in 8”,6”,4”, 3” and 2”, the 10STX offers a high efficiency solution to industrial, municipal, rental, and agricultural applications.
The 10 STX has heads up to 180 feet, and flows to 4,500 GPM. It’s a standard self-primer with a ductile iron wet end and 17-4PH shaft. The bearing frame is larger than most competitors. The flapper is easily installed and removed via a replaceable pin design.
The 10STX can pass a 3” solid. If there ever was a need to remove a solid, the side mounted suction makes it easy to remove the impeller and flapper.
The 10STX is at least 2% higher in efficiency and boosts lower NPSHR than competitors. It can be sped up to 1,800 RPM with a trimmed impeller.
Look for new data sheets and a new Self-Primer Brochure in the next few days. We’ve added a few “sneak-peek” photos and the variable speed curve in this post.
Wednesday, December 14, 2016
Every year, Santa pays a special visit to the children of Cornell Pump employees. They gather for a hearty breakfast and wait for the jolly old elf to arrive, and distribute presents. This year, children ranging in age from 2 months to 17 years old, got a present and a chance to sit with Santa. As part of the festivities, photos are made of every child, so they can be sent in cards, posted to social media, and/or hung in the home. We think all of the kids are adorable, and want to share some of the happiness of the event.
Thursday, December 8, 2016
Join Cornell Pump at the American Exploration and Mining Association (AEMA) Show in Reno, NV.
The show runs through Friday, with hours from 9: 00 a.m. to 6:30 p.m. on Thursday and 9:00 am. To 12:00 p.m. on Friday.
Cornell is displaying our new SM slurry model as well as our filter feed solution at the show. Swing by booth #439 to see these and other exciting mine related products.
Learn more about Cornell Pump’s mining series.
Wednesday, December 7, 2016
Visit Cornell Pump at Booth #1209 at Irrigation Association (IA) expo in Las Vegas. We’re exhibiting through Thursday, December 8 from 11:00 a.m. to 5:00 p.m.
See the redesigned 2C Edge End Gun booster on display as well as our popular RB and V series pumps.
Learn more about Cornell Pump’s agricultural lines.
Tuesday, December 6, 2016
In all, there more than 600 pairs of socks, 10 warm jackets, 50 pair of underwear, 20 long johns and much more given by Cornell Pump employees.
JOIN will use the donations as they work to move homeless off the street into permanent housing. JOIN helped 806 individuals—more than 100 families—in 2015, and expects a continued need in 2016 and beyond.
Cornell Pump employees pick a non-profit recipients of employee philanthropy. Past recipients have included the American Heart Association and Toys for Tots.
Cornell Pump is looking forward to more holiday events, including Santa’s visit with Cornell employees’ children.
Wednesday, November 23, 2016
Friday, November 18, 2016
Cornell is thankful to our distributors, dealers, and end users for the opportunity to work with you and provide the world’s most robust and efficient centrifugal pumps.
Tuesday, November 15, 2016
Learn more about Pump School 2017.
Friday, November 11, 2016
Wednesday, November 2, 2016
Take a quiz to test your pump knowledge. If you like learning about pumps, Cornell Pump School 2017 is less than three months away ! You’ll be exposed to information in this quiz and much more at the training program more than 12,000 pump professionals have taken since 1949. Held in beautiful Portland, Oregon, the school offers two days of instruction and hand-on training. Find out more about Pump School 2017.
And look at our blog for two other quizzes we’ve already published!
Monday, October 31, 2016
Ken in our assembly shop dressed up today in his 90's vintage Cornell attire. Even on the last day of the month when the shop guys are working hard to get promised orders out, they know how to have fun!
All our Customers and Business Partners are a Treat to work with! Have fun and stay safe tonight.
Saturday, October 29, 2016
Learn more about the refrigeration series here on the Cornell website. There is even a troubleshooting guide for the CB series.
If you'd like to attend a great classroom and hands on event, where you learn like the RETA chapter, consider Pump School 2017. Two days of great instruction that will benefit new and experience pump operators alike.
Friday, October 28, 2016
Tuesday, October 18, 2016
Ever wonder how a piece of metal gets turned into a precision Cornell Pump shaft? This video vignette shown on our Pump School tours, gives a glimpse of how the shafts are made. If you attend Pump School 2017 you can see the shaft cell, assembly area, paint booth, test lab, and much more on the factory tour, plus get 1.5 days of engaging classroom instruction. Pump School 2017 is set for January 24 and 25, 2017 . Learn more about Pump School.
Tuesday, October 11, 2016
There are four basic types of pump curve shapes that you will usually find for centrifugal pumps:
- Gradually rising – the most common type
- Steep – probably the second most common type
If you start on the right side (maximum capacity) of a gradually rising pump curve, you will have a nice arched shape, and head (pressure) increases continually as capacity is decreased, and you move to zero flow. This pump will provide a medium change of head (pressure) as the flow increases or decreases, and pump operation is very “stable” as the flow and head relationship are well defined throughout the pump curve. This type of performance is usually preferred, as it usually is very compatible to most sensing/control accessories that may be used to control the pump.
With a steep centrifugal pump curve, you will have a steeper arch, resulting in a larger head (pressure) increase as the flow decreases, compared to the gradually rising curve mentioned above. This performance may be desired with some sensing/control equipment where a larger pressure differential is preferred, and with system requirements that have large pressure demands with fairly small flow changes. The stability of this curve is excellent due to the steeper continuously rising shape.
An operator may prefer a fairly flat pump curve in some systems, where he/she would like very little pressure increase as the pump flow decreases. In addition, the operator/designer would not need to be concerned about building large pressure levels as the flow varied, and could possibly use lower pressure rated piping and accessories. The pump stability of this curve is good.
The fourth pump curve type is a drooping curve. As shown in the illustration, this curve shape is not stable in the area where there are two flows where the head (pressure) can be the same, in the low flow portion of the pump curve. This pump should be operated in flow ranges beyond (higher) than the area of instability in order for it to operate smoothly and efficiently. This pump would operate with a narrower acceptable flow range for that reason.
If you have any questions regarding proper selection of your Cornell Pump, please contact any one of our technical salesmen for assistance.
Monday, October 10, 2016
Eric Rice of Industrial Refrigeration Services in Visalia, CA is the proud winner of Cornell Pump’s Kindle Fire Raffle at RETA 2016. Congratulations Eric! If you didn’t happen to attend RETA this year, you can still learn about Cornell Pump’s Arctic King series.
Prominently featured at the show, the Arctic King offers operation at 1,200/1800 RPM –at least half the speed of other hermetic refrigeration pumps. This allows for better NPSHr, less required refrigerant, and longer bearing life. And the Arctic King is flange-to-flange replaceable with Cornell’s long lived and popular CB open drive series. Learn more about the Arctic King.
Friday, October 7, 2016
Cornell Pump is getting ready for Pump School 2017 in January. You can learn about pump hydraulics, efficiencies, terminology, and more—and get great practical learning. At $99* for the two day seminar it’s a steal. Learn more here.
Wednesday, October 5, 2016
Cornell Pump Company is showcasing its latest refinements in refrigeration pump technology this week at the RETA conference in Las Vegas. Among the highlights are a new, multi-stage hermetic pump model with built-in bearing monitoring that can operate as low as 10 GPM with no cavitation. Come down to the show and greet the crew!
Friday, September 30, 2016
Ever wondered how best to replacing packing in a pump? Wondered about the right alignment for a lantern ring? Cornell Pump helps end users address these maintenance issues in the latest edition of our how-to video series.
Our video channel includes numerous other videos on the operation, maintenance, and features/benefits of Cornell pumps.
Wednesday, September 28, 2016
Cornell Pump produces how-to videos, explaining successful ways to operate and maintain pumps. We recently added a short video on how to install and remove a wear ring. Many of our pumps employ wear rings, and this method can safely and effectively help you change them. Watch the new video below:
Our video page includes numerous other videos on operation, maintenance, and features/benefits of Cornell pumps. You can find additional videos on the Cornell YouTube Channel.
Have a Cornell Pump video you want to see produced? Send the idea to email@example.com; we’ll do our best to get a video made!
Tuesday, September 27, 2016
We're in Booth #2275 and the show goes through Wednesday, September 28, 2016. Exhibit hours 9:00 a.m. to 5:00 p.m.
At the Cornell Pump booth, you'll be able to see the new SM slurry pump. Download a Brochure about this new pump series.
Here are some more Cornell Pump Series designed for mining applications:
- SP Slurry pump for general slurries
- MP Slurries designed for course abrasives
- MX Series for high head mining applications
- N Series general solids handling line
- And our CD4MCu pumps designed for abrasive and corrosive applications
Plus see a new filter feed pump system that can revolutionize ease of use, boasts high efficiency, and minimizes downtime.
Monday, September 26, 2016
We'd love to see you and answer questions!
Thursday, September 22, 2016
- When a wide range of flow is required
- When the pumps discharge into a common manifold
- When the system head requirement is greater than can be supplied by one pump
- When system pressure requirements vary
Keys to using pumps in series:
- Same flows, heads are additive
- Not limited to identical pumps
- Continuously rising curves are best
- Check literally everything (seal limits, pump pressure limits, etc.)
- Maintain high pump efficiency with greatly varying heads
- May be able to use some present equipment
- Space pumps throughout system
- Reduces pipe pressures
- Reduces axial load
- Multiple pumps may be more expensive
- Larger pumps may offer higher efficiency at design point
- More accessory equipment required
Wednesday, September 21, 2016
Congratulations Ron, on job well done!
Read the article on the Pumps&Systems website.
Thursday, September 1, 2016
Tuesday, August 30, 2016
- Waste Warrior Cutter - for aggressive ragging and plugging
- Immersible-up to 2 weeks submerged in 30' of water
- N Series solid handling pumps - 2 to 30" discharge; up to 10" solids handling capabilities
- STX, STH, STL Self-Primers - wet prime for bypass and plant work
- Submersible - Over 40 models, with flows from 80 to 15,000 GPM and heads to 450'
Tuesday, August 23, 2016
Incorporating information about all of our pump models, with application stories and data sheets more readily accessible, the website is also device optimized. It will be easier to view on your smart phone and tablet, and more useful on your desktop or laptop.
Please look around www.cornellpump.com for all the changes that have been made; and you can suggest any new features you’d like to see in updates at firstname.lastname@example.org
Wednesday, August 10, 2016
Thursday, August 4, 2016
Sunday, July 31, 2016
People always ask how much of a suction lift will a Cornell Pump pull? The answer is simple and easy to calculate in four steps:
- Determine the NPSHR (provided on pump curve)
- Look up the amount of pressure the atmosphere (weight of air) is pushing down at a particular elevation.
- Calculate how much energy all the valves, pipe, fittings, elbows, etc., in the pump system cost the system in terms of flow.
- Compare how much the system could produce versus how much energy it going to cost.
The first thing to understand is that every pump has an energy requirement needed to run without cavitation. This required energy is call the Net Positive Suction Head Required or NPSHR. Thinking of NPSHR another way, it’s the absolute pressure a liquid must have to avoid creating microscopic, damaging vapor bubbles in the liquid being pumped. Those bubbles are cavitation and they can harm a pump and shorten its useable life.
The NPSHR is inherently part of the pump design [how steep the impeller vanes, the speed of operation, the shape of the volute, etc.,] and is listed on the pump curve at your specific design point. NPSHR is calculated by Cornell Pump in our test lab empirically. It is important to remember that the NPSHR will vary at different operating conditions for a pump, and can be different for the same operating conditions when comparing two different pumps.
Next, the maximum a centrifugal pump can pull is constrained by nature. Atmospheric pressure exerts about 14.7 pounds per square inch of force on everything (you, a car, liquid) at sea level. That 14.7 psi on liquid allows it a maximum of 34 feet of head (push) at sea level. Again these values have been calculated for you. Not by pump manufacturers per se, but starting with enlightenment scientists looking to understand barometric and atmospheric pressure. Atmospheric pressure is understood today to be about 34 feet of head at sea level. If you were on the top of Mount Everest the psi would only be 4.4 and the energy impart would be 10.2 feet of head as a maximum.
So, you have a known amount in NPSHR provided by the pump manufacturer for the particular model, and you can consult a chart on atmospheric pressure.
In the third step, you have to do some leg work and round up everything (pipes, valves, etc.) that the liquid will travel through. Each of these items are not completely smooth, and in the case of elbows etc. are not straight either. Liquid moving through the parts will lose some energy running over the less than smooth bumps that exist (like a stream running into a rock—it gives up some energy and creates an eddy behind the rock.)
You will need to subtract all other losses from the equipment in order to determine the NPSHA of your system. Losses would also include your static suction lift in feet or the vertical distance from the water level to pump. The friction loss in feet in the suction pipe or the pressure lost when the water rubs against the walls of the pipe and losses created from vapor pressure which is a result of the temperature of the liquid.
It also advisable to include a safety factor to NPSHA. In case of storms (causing lower atmospheric pressure), changes in pipe diameter due to corrosion, etc., the factor allows the pump to operate in less than ideal conditions. Cornell recommends adding 2’ of loss for the NPSH margin.
Finally, once you know the losses for your NPSHA, you can add that to NPSHR, and then compare it the atmospheric pressure for the elevation. That will be the amount of static lift available.
Note: In order to avoid cavitation and pull a suction lift with your pump the NPSHA of your system must always be higher than the NPSHR (of the Pump).
The equation for determining how much of a suction lift you can pull with your pump you can take your Atmospheric pressure(Pb) subtract your Pump NPSHR, Vapor Pressure (Vp), friction losses (hf) and NPSH Margin (Safety factor) and you will have your maximum suction lift.
- Suction Lift = P(b) – (Ls + Vp + hf + NPSHR)
- P = Pressure (in ft) at surface of water
- Pb = Barometric Pressure (open system)
- P = Absolute Pressure at surface of liquid (closed system)
- Ls & Lh = Distance from water level to pump CL
- Ls is below pump centerline
- Lh is above pump centerline
- hf = Friction Losses in Suction Pipe
- Vp = Vapor Pressure of liquid.
- NPSHR (from pump curve)
Here is an example.
Friction losses in pipe, vapor pressure at elevation and Atmospheric pressure at different elevations are available in the Cameron Hydraulic Data Book.
Friday, July 29, 2016
Wednesday, July 27, 2016
Cornell Pump will be holding our annual pump school in January 2017. We normally hold the school in September, but this year we’re accommodating those who aren’t able to attend because of harvest, etc.
The quiz is short—five questions long—and you get the answers immediately. Take the quiz to brush up on your knowledge, or confirm your ability to get five out of five correct! All these topics and much more will be discussed at Pump School 2017.
Thursday, July 21, 2016
To aid operators, we go over start-up procedures at our pump school. Following is a checklist of activities, in order of action, that we have found will help a start-up go smoothly.
Whether you’ve never started up a pump before, or you’re an old-hand at hydraulics, this 18-point check list can help ensure your next pump start-up is trouble free. And, if you’d like more training about start-up and other operation/maintenance related topics, consider attending the Cornell Pump 2017 Pump School. It will be held January 24 and 25, 2017 in Portland, Oregon. Get more information about Pump School 2017.
START-UP CHECK LIST
- Re-read all instructions and check for compliance on each point.
- Piping must be clean and free of debris and obstructions, gaskets in place and all joints secure.
- Are all thrust blocks and supports adequate?
- Are screens in place?
- Check the valves and blow-offs for proper position.
- Make sure support systems are in place and functioning, such as special lubrication, frame oil, etc.
- Check the power supply voltage with the motor name plate.
- Are belts and shaft couplings properly adjusted and aligned and guards in place?
- Does the pump rotate freely?
- Prime the pump.
- Check pump rotational direction. (VERY SHORT on/off power pulse).
- Comply with all seal or packing operation and start-up instructions.
- Monitor the motor temperature.
- Note the operating temperature of frame bearings (if any).
- The pump may be checked for shut-off pressure with the pump performance curve.
- Fill the system slowly.
- Do not operate any pump without properly priming it, unless it has been specifically designed for such operation.
- New pumps must not be started and stopped frequently. If possible, permit the unit to run until operating temperature is reached.
NOTE: Large motors must not be started and stopped more than five times per hour.
A pump must not be started until compliance is reached on all the applicable points above and any others specified in the “Operation and Maintenance Manual” supplied with the pump. Failure to do so may cause severe damage to equipment and/or personal injury. It may also void the warranty.
This is a first in a series about pump-start up considerations. Look for additional articles over the next several days.
Thursday, June 30, 2016
Cornell Pump Company has proudly supported the Idaho Irrigation Equipment Association’s scholarship fund for years. The association recently awarded $22,000 in scholarships to 34 students for the 2016-2017 year. IIEA has given out more than four hundred thousand dollars in scholarships since its inception in 1980. Scholarships are awarded to students interested in the irrigation industry - majors may include: Irrigation Engineering, Agricultural Engineering, Horticulture, Crop and Soil Sciences, Agribusiness, Turf Landscape/Irrigation Architecture and Design, Agriculture/Horticulture Education.
Cornell Pump receive a touching letter from Morgan Cortez, Cornell Pump IIEA 2016 scholarship recipient. Ms. Cortez indicated the scholarship will help her achieve her goal of an associate’s degree in Agricultural Business at Casper College in Casper, Wyoming. After completing her Associates degree, she will attend Colorado State University for a Bachelor’s degree in Business Agriculture.
Congratulations to all the recipients—we hope your aspirations come true!