Bearing pumps – Wrap N Go Tue, 19 Oct 2021 16:42:16 +0000 en-US hourly 1 Bearing pumps – Wrap N Go 32 32 Valve solutions for mine dewatering Tue, 28 Sep 2021 07:00:00 +0000 Water is an essential resource in all mining operations. Water is used in many processes including hydrotransport, solution leaching, dust control, screening and separation, to name a few. Reducing water consumption has become an increasingly important priority for the mining industry in recent decades. Newer technologies such as dry tailings and in-pit treatment are being […]]]>

Water is an essential resource in all mining operations. Water is used in many processes including hydrotransport, solution leaching, dust control, screening and separation, to name a few. Reducing water consumption has become an increasingly important priority for the mining industry in recent decades. Newer technologies such as dry tailings and in-pit treatment are being evaluated as additional methods to conserve water. A critical component to the overall success of any dewatering technology is the performance of the valve.

Dewatering begins once the ore is separated from the waste or tailings. Each mine site presents specific and unique challenges in dewatering processes due to the different types of ore. Selecting the optimal valve for each process will impact the overall system performance and improve the efficiency of returning valuable water to the facility for reuse.

There are many tools available for researching and comparing valve options. Application data sheets describing the application conditions (pressure, temperature, viscosity, density, percent solids and pH) are required to select the appropriate valves. Standards and specifications, both industrial and internal, help define more precisely valve requirements such as flange and body ratings, testing and material standards. Specifications can also define shutdown, isolation and leakage capabilities. A solid valve specification is an essential starting point. Documentation of industry standards and internal minimum requirements ensures informed comparisons of valve solutions offered by multiple vendors.

When selecting valves for dewatering applications, factors such as corrosion, abrasion, scaling, valve orientation, cycle frequency, cycle time, and overall system design should be taken into account to avoid potential problems.


To avoid corrosion, substrate specifications should define both concentrations and temperatures and include normal and disturbed conditions. The specifications should also define the chemicals or procedures used for flushing or cleaning the lines to ensure the compatibility of the selected valve materials. Using a steam jet to clean up large scale in the pipeline, for example, can easily cut or destroy elastomeric seats and gaskets.


Abrasion is a common problem in tailings systems. Abrasion control technologies include weld coatings, spray coatings, ceramic and non-metallic coatings such as rubber and urethane. Rheological studies of abrasive materials have shown that together with the percentage of solids and the speed, the size and shape of the solid particles have a considerable impact on abrasion resistance technologies. In some applications the combination of corrosion and abrasion is a double problem, not only because it limits options but also because safety becomes a major concern. Abrasive materials will eventually wear down seats, seals or even valve bodies. The minimization of the risk of exposure to the media for personnel and the environment should be duly taken into account.

IMAGE 2: Data sheet of control valves for mining operations (Images courtesy of DeZURIK)


Scaling is often a missing condition in application data. Build-up of material on the flow control component and bearing surface can damage an isolation valve and shorten its life. Scaling causes the valves to seize or jam, often in a partially open position. A seized valve restricts flow and prevents isolation, requiring almost immediate and unplanned downtime. Solutions for scaling applications include oversized actuations, coatings or alternative valve types, but each solution has its own limitations.

Valve orientation:

The orientation of valves in the pipeline can often affect performance. A variety of valve orientations are shown in a hydroseparator in Image 1. When the drawing was submitted for tender, the valves were shown in a vertical position on horizontal lines, which is typical of valves. guillotine. Application data sheets indicated that excessive wear could be expected in the lower portion of the piping due to sedimentation and heavy solids sliding along the pipeline. Valves purchased for the project included a solder coating in the lower third of the orifice to resist wear due to solids settling. The remaining portion of the valve orifice was left as standard carbon steel as specified. During installation, space limitations forced the valves to be installed in various orientations instead of vertical. This meant that the liner designed to protect the lower valve orifice from abrasion wear was not positioned correctly and the valves failed earlier than expected.

Cycle frequency:

Cycle frequency can have a significant impact on the performance of an isolation valve. Depending on the type of valve, manufacturers recommend at least a partial cycle of a valve every three to six months. When a valve is operated less frequently, it can jam due to scale or corrosion (internal or external). In addition, soft valve seats and seals can become weaker, damaging other components. High cycle applications in abrasive services can cause premature wear of soft seats – care in material selection is important.

Cycle time:

Hydraulic surges or unwanted popping in the piping system occur when a valve is operated too quickly. Some systems require a quick-closing valve to prevent reverse flow, normally a non-return valve. Occasionally, a fast acting knife gate valve will be used in conjunction with a pump stop signal to prevent reverse flow due to a high concentration of solids with settling particles. For example, a 30-inch valve may need to close in five to six seconds. A push-through style, rubber-lined knife gate valve would not be a good choice, even if it meets all other slurry handling criteria. The push-through style valve has a closing speed of approximately 1 inch per second for proper door / liner performance, meaning the valve would take 30 seconds to close. Closing at a higher speed would damage the push-through type valve, shutting off the tailings line. Another style of valve should be considered.

Overall system design:

Once a new system or rebuild is complete, the operation is left to the end user. Start-up, shutdown, and operation procedures may be different from the original design conditions. When a valve problem occurs, the original data is reviewed and the valve selection process is repeated. Considering these variations when trying to troubleshoot a valve problem can be beneficial. Monitoring equipment performance to standardize best practices can be beneficial in reducing equipment wear and maintenance.

These issues discussed apply to dewatering technology commonly used today at mine sites. However, it is important to examine two new technologies designed to capture more water quickly and how these technologies will impact valve design and selection.

Dry residue:

Dry tailings are used in small to medium sized mining operations, especially where water is scarce and expensive. Filter presses are used to dehydrate residue to a moisture content of about 5% to 6% before it is moved to the dry cell stack. This eliminates water loss through evaporation and increases the efficiency of filtration and reuse compared to traditional tailings ponds. Valve problems are due to the higher pressures and frequent cycling required by filter press systems. Filter press systems typically have high pressure drops across the high solids slurry inlet / feed valves, creating difficult valve application.

Pit treatment:

One technology in development in oil sands mining is pit mining processing. This process uses a modular extraction plant that can be moved with the mining in the pit. The technology extracts bitumen near the mine and produces stackable dry tailings, minimizing water used in hydrotransport. The valve challenges are expected to be increased valve wear and cycling, as well as remote operation challenges and exposure to the elements.

The conservation, capture and reuse of water are of vital importance to the future of mining. The reliable performance of the valve ensures efficient operation of essential dewatering processes. Experienced sales engineers from reputable manufacturers who understand mining processes and requirements can provide invaluable advice when selecting valves for tough applications.

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Narrower focus brings clarity of strategy, USP for SPX FLOW Wed, 26 May 2021 07:00:00 +0000 Last March, as the world began to understand what the new coronavirus threat really meant, SPX FLOW divested its Power & Energy unit, a move that proved timely as companies scrambled to maintain their resources. stable in an uncertain economy. At the time, SPX FLOW’s goal was to focus on process solutions, but the divestiture […]]]>

Last March, as the world began to understand what the new coronavirus threat really meant, SPX FLOW divested its Power & Energy unit, a move that proved timely as companies scrambled to maintain their resources. stable in an uncertain economy.

At the time, SPX FLOW’s goal was to focus on process solutions, but the divestiture also helped the company remain prosperous during the COVID-19 pandemic and has since enabled new investments to boost the growth.

Pumps & Systems recently spoke with CFO Jaime Easley about the company’s operations during the pandemic and the decisions made that led to its new priorities.

P&S: What positive points emerged from the new direction of the company, even when it was facing the pandemic?

Easley: We had an advantage before last year. Around the time COVID hit, we sold our P&E business and raised $ 400 million. So, we did not enter the pandemic with a high degree of influence; we could be calculated and continue to invest in the business at the time. We had the balance sheet and resilient cash flow to make investments.

Last year we were able to add $ 4 million in R&D to what we would have spent in the past; a 20% increase in R&D. We have also invested in capital expenditures; we have a clear strategy, so let’s invest in our facilities, especially high-value, safe and modern places for our employees. We spent $ 40 million in capital spending this year, double what led to the pandemic. We would have done more last year, but some things could not be done on time. Finally, we carried out three M&A operations. We have made good, bold investments.

Jaime Easley, CFO of SPX FLOW

P&S: How has this strategic direction and these investments affected employee morale?

Easley: It is quite encouraging. Last year, when we went through it, other companies cut 401,000 plans or put staff on leave around the world; we were able to get through 2020 while protecting our people and keeping them safe. We had previously planned moving things that we continued with, but we haven’t made rash decisions due to COVID.

When people see that you are investing in them through R&D, it’s inspiring. When you tell a mechanic or airframe operator that we realize that this equipment that breaks down is not what you need to be successful, they get excited about the new machines. We’ve communicated better about the things we do, and in our employee engagement surveys, we’ve seen a big change as the pandemic ends.

P&S: Can you explain to me a bit why SPX FLOW decided to focus on being a process solutions company?

Easley: It’s 80/20 – it’s the principle you’ve heard of that 80% of the valuable things in your life come from 20% of the things you do. Thus, we can reuse to devote more time to more spending customers and better products and invest in these products, the facilities and the people who work on these products. We are all guilty of trying to be the best at everything and for everyone. Focus has helped us be better during the pandemic; we can drastically change the organization and serve and help sell more and deliver more.

We’ve centralized a lot in recent years… and we’ve become a lot more confident in our ability to predict.

P&S: What is the link with the acquisition of Philadelphia Mixing Solutions?

Easley: With Philadelphia Mixers, we have found time and time again that in the US and around the world, they are well known for their customer service and employ high quality engineers to help them solve their problems. We are enthusiastic about the expertise and culture that accompany the company. They are doing something that creates value for the customer and that is more recurring income.

P&S: How are things going now, with more people vaccinated and more restrictions lifted?

Easley: Volumes are certainly up – we’re busier than we used to be; demand reached the system faster than supply companies could for shipping. It will take a little time to catch up. When you have unnatural things like the Suez Canal or port blockades somewhere, there will always be implications.

For us, we still do most of our sourcing in the regions. We have taken advantage of some suppliers that we can get the best prices for in the country, so freight or overseas air freight does not necessarily impact us. But it’s a very connected world, and it’s likely that these vendors have vendors that are located outside of the country.

Our supply chain in India is certainly in question; the supply chain from the Far East, China, is slower. We have increased our safety stock in a few areas where we know our supply chain is outside the US or in a few places we have qualified new suppliers in case we need to send them a request. . The team has taken the lead.

P&S: What have you learned from the changes the company has gone through over the past year?

Easley: Our research tells us that when you are in someone’s process, you are more closely connected to the customer. For example, if you are a yogurt maker you have milk going in and water going in, and if you just provide the pump you don’t have much. If you also have the blender and other components, then you are in their secret sauce. You innovate with them on the way to change the recipes, to change their bottom line.

The story for us is going to be how to take that solid track record, the process-solutions strategy and the 80/20 principle and apply it. We are very interested in continuing to invest in our business. I think you will see us being an aggressive capital allocator in the years to come. We know how we are going to create value.

“Solutions in the Making” is the powerful new slogan that our employees and customers can cling to. Solutions are that deeper level of intimacy with a client – I won’t tell you the answer, I will help you find the solution. And “doing” is not a passive term; we can create something new or make it more effective — we’re proactive.

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Why is the Crompton line of agricultural pumps the smarter choice for farmers? Tue, 27 Apr 2021 07:00:00 +0000 The sun never sets for Pravin Jamkhandi, a 49-year-old farmer. He is the only one of the four brothers to continue farming and works on his 6.2 hectares of land. He grows hybrid cucumbers, often referred to as “Chinese kheera” by vendors in the city, and is a keen connoisseur of new farming practices. He […]]]>
The sun never sets for Pravin Jamkhandi, a 49-year-old farmer. He is the only one of the four brothers to continue farming and works on his 6.2 hectares of land. He grows hybrid cucumbers, often referred to as “Chinese kheera” by vendors in the city, and is a keen connoisseur of new farming practices. He realizes that even when India is the largest segment of the Indian population are farmers, they face endless professional challenges on a daily basis, often due to floods, droughts, productivity and irrigation. Regardless of the precipitation received during a particular season or the presence of water bodies around, the crisis weighs heavily on these farmers for whom water is nothing less than an elixir. That’s why he trusts innovative agricultural pumps designed to deliver superior performance and reliability, ideal for all agricultural solutions, such as those manufactured by Crompton.

The wide range of Crompton pumps spans across categories such as household, agricultural specialties and solar power. Over the years, its agricultural pumps have specifically become a mega-hit because they are rugged and deliver foolproof and consistent performance. Here are just a few ways that Crompton has silently allied itself with the toil of farmers for decades:


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Wide range of pumps to suit all your needs and applications

Agricultural pumps are used for irrigation of land by sprinkling, flooding or micro-irrigation. Water is pumped out of the reservoirs using open or monoblock well pumps or using borehole pumps from boreholes up to 60 to 1,500 feet deep!

An agricultural pump helps farmers easily transfer water from one source to another. Whether the source is underground or located on the surface, these pumps are powerful enough to draw water from just about any depth. For your farming and farming needs, these pumps use high pressure to transfer water to the desired location. They help make water dispensing more convenient with each draw. But before you buy a pump, you need to understand its specifications. Each pump has a different power range, stage, lift height range, discharge range, pipe size, and supply phase. The higher the power, the greater the flow rate of the pump.

With that in mind, we have brought you some information about the different types of agricultural pumps and their features.

Borewell submersible pump

Farmers are well aware that unpredictable rainfall results in an uneven water supply. To ensure an uninterrupted water supply throughout the year, you can opt for a borehole submersible pump. This pump is fully submerged in water. Lower HP variants are also used to supply water to residential and industrial units. Borewell pumps come with many great features like better hydraulic and electrical design as well as high quality electric stamping which makes the pump very efficient. The specially designed thrust bearing ensures reliability and its simple construction makes maintenance easy. It can also work effectively in a wide voltage band, protecting it from voltage fluctuations.

Open well submersible pump

Used to extract water from reservoirs and transfer it to storage on farms or directly on farmland, this pump is also submerged in water. It can be used in irrigation, water transfer from canals, wells to farms, etc. These pumps are available in a wide voltage range and with CED coated parts. Their ability to operate efficiently over a wide voltage range without damaging the pump makes them a safer and more durable option. CED-coated parts make the pump rust-free and jam-free, giving it a longer life. If you are looking to buy open well pumps, you should consider factors such as tank, storage tank size, pipe diameter, and the material used in the pumps before purchasing them. In addition, there are two types – horizontal and vertical. It is always best to speak to an expert before making a purchase.

Monobloc centrifugal pumps

When it is necessary to transfer large amounts of fluids from one place to another, these pumps are useful. They guarantee high flow rates. Monoblock pumps are used in agriculture, industry, sewage treatment plants, mines, power plants and many more. Centrifugal pumps offer wide tension bands like most agricultural pumps, but what sets them apart is the monoset construction. The high quality monoset construction and mechanical seal prevent leakage and keep contaminants out.

Stress-free solutions for a regular water supply

Crompton agricultural pumps ensure that you don’t miss your regular water supply, whether it’s your overhead water tank, industrial applications or agricultural needs. They are equipped with advanced technology and features such as:

  • High quality electrical stampings which ensure reduced power losses and lower the operating current of the pump.
  • Wide Voltage application is designed to withstand wide voltage fluctuations from 250V to 440V and provides consistent performance.
  • Lower operating current with rugged electrical design to lower your electric bill.
  • High thrust capacity ensured by a specially designed thrust bearing for maximum reliability.
  • Long-term maintenance with easily replaceable wearing parts, low maintenance cost.

Water pumps provide benefits not only to farmers, but also to crops and ecosystems as a whole. They are essential to the modern irrigation system and should be invested if not already. If you are connected to the world of agriculture anyway, check out the extensive range of Crompton Agro pumps today.

Disclaimer: This article was produced on behalf of Crompton by the Times Internet Spotlight team.

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