Installing a mechanical seal on a centrifugal pump wrong can be costly and time consuming. Cornell’s newest video on YouTube provides some quick tips and lessons to help make the process smoother.
Mechanical seals play an integral role in keeping pumpage inside the pump. Sealing at the entry/exit point of the rotating shaft, Cornell mechanical seals with Cycloseal® have some distinct advantages over packing, in that they do not require flush water and will not gall shaft, do not require routine adjustment like packing, and last longer than packing before being replaced.
Cornell has several videos showing seal installation you can reference beyond these quick tips, if you want to see a full assembly.
Please check out this informative video, and see the stable of informational and promotional videos Cornell has on our YouTube Channel.
Yesterday was NationalCut YourEnergy Costs Day. Cornell Pumps are some of the most efficient centrifugal pumps available, with efficiencies up to 89%, allowing installations to cut their energy use immediately when switching to a Cornell.
Operating hundreds or thousands of hours per year, that energy savings could translate into tens of thousands of dollars in savings annually.
Distributors and end-users should consider energy savings, repair costs, and length of warranty, along with NPSH and system design, when choosing a pump.
In 2021, Cornell Pump will celebrate 75 years of business. In 1946 we started in Portland, Oregon, and have been here in Oregon ever since! While we now offer things that would have been science fiction in 1946, such as Cornell Co-Pilot Industrial Internet of Things (IIOT), we still build highly efficient, robust pumps like we have for nearly 75 years.
Cornell Pump rings in the new year with a long weekend. We will be closed Friday, January 1st through Monday, January 4, 2021. We wish everyone a happy and healthy new year! We open at 7AM PDT on Tuesday, January 5th, 2021 .
Cornell Pump is closed December 24th and 25th, 2020 to celebrate Christmas Eve and Christmas Day. We hope everyone enjoys a festive holiday, safe and healthy. We will be open again on Monday December 28, 2020 at 7AM PST.
Cornell has pump builds with threaded impeller installations in several of our instructional videos on YouTube. We have created a quick companion video that provides some “how-tos” when dealing with this type of Impeller. While the video is short—only 90 seconds long—it shows how a shaft wrench helps with threaded impeller installation or removal. It also talks about cleaning the threads and making use of anti-seize in installing the impeller. Check out the video full of helpful information:
A large tomato grower in Central California was having issues with pumps that were being run unattended. Without someone there to watch the pumps continuously, they run into operational problems.
The fleet of several dozen pumps would see intermittent cavitation, causing pump damage. Bearing failures were another issue. Frequently, debris would enter the pump suction and restrict flow, or in worst cases, trip motors. All of these instances caused downtime to the facility, maintenance staff time and resources, as well as purchase of parts. Additionally, much of the fleet was older, causing issues with spares, and they operate in a tight labor market, so skilled labor for pump maintenance or even more casual labor to monitor the pumps, was hard to secure.
The grower wanted alerts that helped them stop a problem before it turned critical. They became aware of Industrial Internet of Things Monitoring (IIOT) as a possibility. The considered options, and felt that Cornell Co-Pilot™ was the right mix of escalating alerts, geolocation, being able to start and stop the pump remotely, and multiple logins so supervisors and workers can all monitor pumps independently.
One of the first wins the facility saw with Co-Pilot was geolocation. With pumps spread over several thousand acres, being able to precisely track mobile assets was a big time save. Later, as technicians were catching problems before they become critical, the additional cost-saving and maintenance value of Co-Pilot came into sharper focus.
The grower has been operating the Co-Pilot system for more than six months (as of December 2020 for creation of app sheet), and in that time they estimate they have saved over $12K in downtime and repairs. The system paid for itself in a few months. The expect five years’ service life of the Co-Pilots would mean more than $75K in savings. That is no small “tomatoes.” Download the full story as a PDF.
We went through the build of a 6822MX Redi-Prime pump –look for expanded content to come to our YouTube channel soon. If you want to see great how-to and promotional recordings now, there are more than 40 videos up on YouTube: https://www.youtube.com/c/cornellpumpcompany/featured . You can watch videos, subscribe, and make suggestions for additional videos there.
A feature on many Cornell clear liquid pumps, an external hydraulic balance line, allows better performance, without having to drill holes in impellers. The following copy comes from Cornell Pump’s Hydraulic Seminar Workbook—lasted updated in 2019.
THE EXTERNAL HYDRAULIC BALANCE LINE
To lower pressure in the stuffing box (or seal chamber) and to attempt to limit the inherent axial force created by the impeller, traditional centrifugal pump designs use large holes bored through the impeller. Cornell has a more effective method –THE EXTERNAL HYDRAULIC BALANCE LINE.
High pressure liquid from the volute passes through the hub ring clearances into the cavity between the stuffing box and the impeller. Liquid returns via the balance line to the region of lower pressure at the pump inlet, taking with it any sand or silt that may otherwise build up at the stuffing box. This method reduces turbulence, improves hydraulic efficiency, increases the life of packing, mechanical seals, and bearings – provides positive control of axial forces. It also reduces wear because sand is not trapped behind the impeller, near the shaft.