Buyers Guide

As one of the most under-rated utilities of all time, the modern-day water pump plays a pivotal role in meeting the requirements of your irrigation needs. Selecting the right irrigation pump for agricultural land will not only result in better crop yield but also help save money and power. Choosing a poor pump, in turn, results in increased power consumption, poor yield, and poor water supply to the crops. So, here are a few pointers to consider before selecting a pump that is worth investing in.   Before the Pump Selection, let us start with the basics: Measurement of the land parcel. Crop’s intensity of water intake. Frequency of water flow. Source of water-open well, borewell, pond, drain from the river. Distance between the source of water and the land. The Ph level of water. So, now that you have done the first exercise, let us understand the different types of pumps for agriculture and irrigation that are available in the market. Borewell Submersible Pumps These pumps are usually underwater, completely sealed with heavy motors to draw water from large depths and they are largely used for irrigation. These pumps are defined in stages if the water is to be drawn from the borewells. (Watch the case study of CRI pumps drawing water from over 2000 feet with its 113 stage submersible pumps). Borewell Submersible pumps are thin and tall to fit inside the Borewell. The size of the pumps is measured in mm, depending on the size of your bore. Open well submersible pump These pumps are again widely used for agriculture and irrigation, but these pumps are used in open wells. These pumps vary from 1 HP to 10 HP in general and are used to draw water for irrigation. Openwell submersible pumps come in vertical and horizontal format. Centrifugal monoblock pumps These pumps are again widely used for agriculture and irrigation, but these pumps are used in open wells. These pumps vary from 1 HP to 10 HP in general and are used to draw water for irrigation. Open well submersible pumps come in vertical and horizontal format. If you require pumps to run for a long duration in a day, these pumps are powered by an enclosed fan-cooled motor. Due to this, the heat resistance will be reduced and the water can be pumped for a long duration. Solar pump Operated with solar energy, these pumps can operate with the lowest power consumption. For solar pumps, though the initial cost may seem high, most governments offer a significant subsidy to promote green energy. Well, which one to choose now? The location of the water from where it is drawn plays a crucial role in determining the type of pump. For example, turbine pumps and deep-well submersible pumps are ideally used to draw water from underground like wells, borewells, etc. While there are different types of pumps to help draw water from the surface level. The pump you purchase must fit perfectly with the rest of the irrigation system. All the specifications listed above must match to maximize cost and energy savings. Choose a pump that helps reduce operational cost, by considering the water pressure and the flow. The right pump helps draw water at the right accuracy and at the right time to help yield better crops, better harvest, and thereby leading to better profitability. Meanwhile selecting the right pump will ensure better water management, thereby making agriculture a sustainable practice. Asking the right questions: 1. Is the pump durable? 2. Can this pump run for a long time in a day? 3. Determine the quality of the pump? a. Installation of these pumps is expensive. So if there are any repairs in the pumps, imagine going through the whole process once again, bringing a jack, lifting the pumps outside the waterbody, carrying them to a mechanic shop, repairing the pumps, and shipping back and reinstallation. Not just the physical pain, but during the peak irrigation times, these could cause severe challenges in the irrigation itself, when your plants will dry of no water. b. The quality of the pumps plays a major role. Here when we say quality, understand where all the pumps may go wrong usually. Coil windings: If the pumps get heated up, the coil may burn (Tip: ask if the coil has a protecting guard) Mud filter: Do the pumps have mud filters and can avoid the clog. (Tip: Only a few specific companies have mud filters.) Rust formation: What the pump& outer layer coating? (Tip: check for 304 steel or fabricated SS or the outer coating has anti-corrosion treatment done. Also, check for the casting grade) Co-efficient of friction: Okay, in simple words when the sand falls into the motor, what happens and how to avoid it. This increases the heat and for the failure. (Tip: ask for carbon bush based water pumps) Coupling portion: Check for the protection and damage history of the brand in the coupling portion. For higher stage pumps the coupling portions have challenges. (Tip: Check for shaft drive-in with 100% SS drive) Impellers: The fans in common slang. The blades and veins in the impellers need to be in perfect alignment to increase the outcome. (Tip: Check if the impellers are laser welded) 4. What is the warranty offered and after-sales service? Usually, companies offer 12 months warranty, but in special cases, you may get more. Before landing on an irrigation pump, choose a pump company that is reliable and highly reputable. Though the branded pumps are a little expensive compared to the local pumps, you can expect the quality to be much better compared to the local players. Imagine the situation of repairing the pump, which shall cost around 25% of the cost of the pump itself, leaving aside the hardships and mental agony of fixing and the loss of the irrigation season. A durable pump with a technology up-step along with a service backup, will help your irrigation season and empower your agriculture needs. So

Role of pumps in Wastewater Management Waste Water Management has become increasingly important with the drastic climate changes and widespread droughts of today. Essentially, wastewater pumps are a type of submersible pump designed to handle wastewater, effluent, and sewage with solids. They can also be implemented for pumping at purification plants, pumping from septic tanks, rainwater pits along roads and construction sites and for pumping grey wastewater in locations such as residences, farms, commercial buildings, and industrial areas. To treat waste water, submersible sewage pumps and dewatering pumps are used depending upon the water source that requires to be pumped. In this article, let us understand the working principles, application of submersible sewage pumps and how they differ from drainage pumps. Water Source and Pump Application We know there are many types of water in commercial and institutional buildings and the kind of pumps required to handle depends upon the water source. Blackwater contains fecal matter and bacteria that are harmful. This water is usually flushed from toilets and may contain solids.Submersible sewage pumps are used for such applications.Greywater in buildings is generally wastewater from sinks and showers that does not contain fecal matter It contains much smaller solids if any at all. Stormwater or Rainwater runoff is the water that is not absorbed into the soil. Dewatering pumps can be used to eliminate water in such cases. What are sewage pumps? Sewage pumps are a type of water pump designed with a solids handling capability. They are non-clog pumps. They use a variety of impellers to reduce clogging. Sewage pumps are used for pumping sewage and effluents from residential and commercial buildings. They are widely used in pumping wastewater or water containing suspended material.   How does sewage pump work? The sewage from most residential applications is pumped from a sewage basin to a sewer system or septic tank, which can contain soft solids up to 2 inches in diameter. Centrifugal pumps used in sewage systems have a unique design that allows solids to pass through without clogging. Because they are usually submersible and situated in the lowest part of the sewage basin, they are also called submersible sewage pumps. When the pump is turned on, the motor starts rotating the impeller, creating a pressure that pushes water into the impeller and into the discharge pipe. The sewage pump is generally powered by a 10-to-25-foot electric cord. The pump housing, which houses the motor and impeller, is made of corrosion resistant material and is designed for long-term use.   Difference between sewage pumps and drainage pumps The purpose of sewers is to carry solid waste as well, while drainage is to remove excess water. Drainage can be open to air, but sewage can’t be open to air since harmful gases come out of sewers. What separates sewage pumps from drainage pumps is their ability to handle larger solids. The selection of a pump necessitates looking at the particle size that the pump can handle. If effluents from a septic tank need to be pumped, then a pump that can handle larger particle sizes would be better. Another important criterion is the total head that the pump can handle. As the head increases, the flow lessens. Frequently Asked Questions What pumps are used in sewage? Centrifugal pumps are most commonly used for pumping sewage, because these pumps can be submerged in the fluid and can handle solid matters. What is the difference between a sump pump and a sewage pump? Sump pumps are essential in many houses or buildings where flooding or water excess is a common problem. Flooding and stagnant water can damage property, materials, and the plumbing system of a building. Sewage pumps are used to remove not just water, but also wastes and other materials. What is the function of a dewatering pump? Dewatering pumps are used in construction and mining to remove groundwater or surface water to lower the water table. By lowering the groundwater level, the workers are safer and the operation is more efficient. C.R.I Waste Water Pumps C.R.I. manufactures energy-efficient wastewater submersible & surface dewatering pumps for powerful wastewater pumping applications.CRI’s SL and SLC series are widely used sewage submersible pumps. The commonly used dewatering pump for pumping out flood water is CRIs DL and DLS series.The cutter series from CRI is used in handling waste from food and beverage industry and hospitals. For all your waste water management solutions, contact us to know more.

Swimming pools are an excellent addition to any backyard, offering a place to cool down and relax during the hot summer. However, to ensure that your pool is safe and clean, it’s important to choose the right pump. Many factors come into play while choosing the right pump, for example, the size of the pool, the pump’s flow rate, efficiency, the type of pump, etc. So, here’s a 5-step guide to help you choose the right pump for your home swimming pool   Step 1: Determine the Size of Your Pool The first step while choosing the right pump for your swimming pool is to determine the size of your pool. This is important because the size of the pool will dictate the size of the pump that you need. A larger pool will require a larger pump, while a smaller pool will require a smaller pump. You’ll also want to consider the number of features in the pool, such as waterfalls or fountains, which will also impact the size of the pump required. You should also consider the volume of water that needs to be pumped through the filtration system. Total dynamic head (T.D.H.) is the resistance to flow that the pump must overcome. The higher the T.D.H., The more powerful the pump will be needed. Step 2: Consider the Flow Rate The flow rate of a pump is measured in litres per minute (L.P.M.). It’s important to choose a pump with a flow rate that matches the size of your pool. The higher the flow rate, the more water the pump can move, which is important for keeping the pool clean and clear. Additionally, it’s important to consider the flow rate considering the size of your pool’s filtration system. A smaller/larger filtration system will support a lower/higher flow rate to effectively filter the water. Step 3: Decide the Type of Pump Two main types of pumps are commonly used for home swimming pools: single-speed and variable-speed pumps. Single-speed pumps operate at one speed, while variable-speed pumps can operate at different speeds. Variable speed pumps are generally more energy efficient, but they can also be more expensive. Step 4: Consider Energy Efficiency Swimming pool pumps are known to be energy-intensive, so it’s important to consider the energy efficiency of a pump before making a purchase. Look for a pump that is energy star-rated, or has a high energy-efficiency rating. Also, consider a pump with a built-in timer – to turn off the power automatically after a scheduled period. You should also consider pumps that come with flow rate adjustment features to save energy. Check the power consumption in watts of the pump for energy efficiency. This will help to save money on your energy bills in the long run. Step 5: Check Prices, Warranty, and After-sales Support When selecting a pump for a swimming pool, it’s important to consider several factors such as flow rate, price, warranty, after-sales services, part availability, and energy efficiency. Compare prices of different pumps and ensure that the company you select provides quick installation and on-site maintenance services. Check the availability of replacement parts and consider the energy efficiency of the pump. It’s important to research and consult with experts before making a final decision to ensure you are getting the best pump for your needs and budget. Formulas to Help You The following steps will help you find your swimming pool volume and flow rate quickly. Step 1: The formula to calculate the volume of a rectangular pool is Length x Width x Depth. For a pool that is 20m long, 8m wide and 1m deep, the volume can be calculated as 10 x 5 x 2 = 100 cubic metres. In case the pool is circular, the formula to calculate the volume is V= πr²h, where r is the radius and h is the height of the pool. Step 2: To convert the volume of a pool from cubic metres (m3) to litres (L), multiply the volume by 1000. (1 Metre cube = 1000 litres) For the worked example of a pool that is 10 m long, 5 m wide and 2 m deep, the volume is 160 cubic metres (m3). To convert it to litres it would be 100 x 1000 = 100,000 litres. Step 3: To calculate the flow rate, divide the total volume of the pool in litres by the time it takes to fill the pool. For the worked example of a pool with a volume of 100,000 litres, which takes 8 hours to fill completely, the flow rate would be 100,000/8 = 12,500 litres per hour (L/h). Step 4: To match the flow rate of the pool with one of the pump options available, the flow rate in litres per hour (L/h) must be converted into litres per minute (L/m). To do this, divide the flow rate in L/h by 60. For the worked example of a pool with a flow rate of 20,000 L/h, the flow rate in L/m would be 12,500 / 60 = 208.3 L/m. This value will match with one of the pump options available in the SMP or SWIMM range. Summary It is important to determine the size, flow rate, type of pump, energy efficiency, price, and warranty and after-sales service before selecting a pump. And by following this 5-step guide, you can be confident that you are making the right choice for your home swimming pool. If you are in the market for swimming pool pumps, explore C.R.I. pumps. CRI group produces sturdy pumps that deliver effective performance and consume less power. With the motto “Fit & Forget,” C.R.I. provides a wide selection of residential, domestic, agricultural, and solar pumps. Visit C.R.I. pumps today to select the right pump for your pool.