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In the majority of Commercial Air Conditioning and Home Air Conditioning installations, a drain pump is not necessary; gravity does the trick and the excess water simply flows down the conduit and empties outside.

HOWEVER, where a gravity drain isn’t appropriate, they are a very important part of an air conditioning installation, and it is important that a good quality unit is selected for the job.
Let’s dig in and explain:
  •     What they do
  •     How they work and
  •     When you need one​​

What does a drain pump do?

You might be wondering where the water that drains from your air conditioning comes from in the first place?

Well, it actually comes from the air.
In the cooling process, the air con draws all the hot, humid moisture out of the air via the evaporator coil, and the condensed water is a waste product of the process.
From there, the water has to be disposed of, and that means getting it to the nearest drain.
Gravity, where water simply runs down the pipe, is obviously the preferred method. It is totally simple and absolutely foolproof.
However, in some air conditioning installations, the water has to go UP before it can go DOWN and that’s when you’ll need a drain pump, also known as an air conditioning condensate pump.

How an Air Conditioner Drain Pump works.

  • Moisture laden warm air flows across the air conditioner’s cooling coil. As the air cools, this moisture condenses.
  • The moisture slowly drips into a collector tray inside the air conditioner.
  • The collected condensate (water) flows from the collector tray into a drain opening and downwards in a pipe or tube to the air conditioning drain pump.
  • The air conditioner drain pump incorporates a small water reservoir which collects the condensate. A float switch located there is lifted by the rising water.
  • When the water level inside the drain pump is near capacity, the float switch triggers a small electric motor.
  • The motor pumps the water up and out of the reservoir to a drainage pipe or flexible tube.
  • The drain pump pushes the condensate to an external building drain, where it is disposed of as wastewater.

Which type of drain pump for your air conditioning installation?

Like everything in life, not all condensate pumps are the same. Some of the cheaper models can be:
  •     Noisy
  •     Prone to failure
  •     Difficult to maintain.
For this reason, we will only supply a high-quality unit that is designed to give years of trouble-free life.
This last point, (difficult to maintain) is something that is often overlooked, but can be very important.
Here’s why…
Drain pumps contain a filter screen — to keep bugs and debris out so the pipe doesn’t get blocked; if it does, then there may be ensuing water damage.
A service mechanic must be able to clean, wash the screen and other components to keep the pump pristine and in top working order. It only takes a few minutes. But regular servicing is very important, as you’ll read in a moment.
And by the way, another thing that is tied in with the issue of maintenance is the location of the pump.

Some pumps can be installed behind the air conditioner.
On one hand, they are neat and out of the way.
On the other hand, they can be “out of sight, out of mind”, and if your service technician isn’t on the ball, problems can occur.

For more info contact water pump dubai or call us at +971 4 252 2966
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Water removal is no easy task, which is why many people turn to pump hire to make the job a whole lot easier. However, as soon as you start looking at what's available, you will soon realise how many different types of Drainage pump are on offer.

Each will have its own characteristics and merits, so make sure you weigh up the pros and cons before deciding which will be most useful to your project.

What type of water do you need to remove?
Water varies depending on where in the country you're located, and what the surrounding conditions are like. Some drainage pumps are better designed for moving clear water, while others will make a better job of transferring liquid that's laden with silt and debris.

According to Water and Wastes Digest, centrifugal and semi-drainage pumps work in exactly the same way - except for one key difference. The latter have more rigid internal components and a larger opening where the water is discharged, enabling water to pass through more freely.
In the event there are large pieces of rubble in the water supply, this is when you'll need a fully-fledged drainage pump. This is likely to be the best choice if you're dealing with sandy, dirty water.

How much delivery can I expect from the drainage pump?
Each drainage pump you look at will have a different delivery capability - namely the amount of water it can move in the space of an hour. This is another feature you will need to look at closely, especially in situations where there are large volumes of water.
​

You might also want to consider the length of the cord on the pump, as this may inhibit your progress if your power source is a particularly large distance away.

Is the trash pump need to be portable

Another issue worth considering is portability. This is especially important if you're removing water across a large area and need to complete the job as soon as possible.
Many of the options you'll come across when you take a closer look at pump hire will be highly portable. Don't be fooled by the lightweight materials, as they'll still be capable of completing the task at hand.
However, in heavy duty situations it might not be possible to use a relocatable drainage pump in quite the same way. Make sure you find out exactly what you're hiring so you can rest assured knowing it will be the best option
For more info contact water pump dubai or call us at +971 4 252 2966
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If you need to do some repair work around your property, you may need to remove excess water from certain areas. This is where a submersible pump can come in handy, as these can be used to move liquid from one area to another.

Submersible pumps are a kind of centrifugal pump connected to an electric motor. The pump is submerged in the water and stays there until the job has been completed.

Their motors are designed specifically to prevent water from leaking into them, so there is no risk of water damage. In addition to this, the danger of electrocution is also lowered. 

Hiring this kind of pump has some other great advantages if you need to drain water from your property.

More Efficient

By nature, submersible pumps are closer to the job at hand and are therefore able to expend less effort to do the same job compared to above ground pumps. They are placed right in the water rather than on a dry area and there is no need to worry that they will get wet or suffer the effects of water damage.

Convenient

Submersible pumps are lightweight and easily portable, so there is no need to worry about getting them from the hire location to where they are needed.

Quieter

In a residential setting noise is often a great concern, so it can be a relief that these pumps are quieter than the alterative. This is because they are submerged under water so any noise is prevented from spreading.

Safe

Submersible pumps are a great, safe option for any maintenance around the home as the dangerous components of the pump are well hidden underwater . This  prevents children from easily tampering with them, which can be a hazard for above-ground pumps.

However, while using a submersible pump it is still recommended you keep an eye on children and pets to ensure they are kept at a safe distance to prevent any harm.

Submersible pumps are also safe from electrical shorts as water is prevented from leaking into the unit by a hermetically sealed watertight gasket.

Less prep work

Submersible pumps do not need to be primed before use, which gives you more time to complete your project, rather than prepare your equipment.

Long power cords

Since submersible pumps are designed to work underwater, they come complete with long insulated power cords.

This means you can plug it in even when the power point is located a distance away from your work site.

For more info contact water pump dubai or call us at +971 4 252 2966

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Centrifugal pumps make up a great deal of these and are ideal in applications where lower viscosity and thin liquids are needed at high flow rates. They can work with clean or dirty liquids that do not contain vapors or air. For these reasons, centrifugal pumps are often used to move water and sewage in residential, industrial, and commercial applications. Common types of centrifugal pumps include:
  • Chopper pumps
  • End suction pumps
  • Fire pumps
  • Froth pumps
  • Grinder pumps
  • Magnetic drive pumps
Other common applications include boiler feed pumps that control the amount of water entering a boiler, dewatering pumps to remove water from a site, firefighting pumps, irrigation pumps used in agriculture, and even in solar pumps.
Along with positive displacement pumps, centrifugal can also be used as chemical pumps, circular pumps where the fluid moves through a closed system, high pressure, and other process pumps.
Number wise, centrifugal pumps have flow rate ranges between five to 200,000 gallons per minute, total head pressure from 10 to 7,500 feet, and horsepower from 0.125 all the way up to 5,000.

Pros and Cons Of Centrifugal Pumps

One great advantage to the centrifugal pump is that it is usually quick to install, requires less maintenance, and is easier to fix when it does need repair. The pump uses no drive seals, which eliminates the change of leakage, a costly and difficult problem. The pumps are also free of the pulsations that can be found in positive displacement pumps. Centrifugal pumps also completely separate the liquid from intake to out, meaning that none can get into the motor or other vital areas.
However, there are applications when centrifugal pumps would be disadvantageous. One of the biggest drawbacks to the centrifugal pump is its inability to provide suction power, meaning the pump must be installed below the liquid or primed before it can work. They are not recommended for working with high viscous fluid, such as those that contain ferrous particles, especially when the centrifugal pump has a magnetic drive. The pumps are also not recommended for heavy loads which can cause the coupling to slip.

For more info contact 
water pump dubai or call us at +971 4 252 2966
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Hot water systems are probably not at the front of your mind when you think of the most important parts of a functional home. But, when you think again, it is one of your key household necessities.

Hot water is a luxury we tend to take for granted, but it is a luxury we should pay more attention to. These days, we all have hot water units and hot water systems installed in our properties. From running a bath to cooking, there’s a wide range of reasons why having an instant hot water source is advantageous. After all, the types of hot water systems you can install today are convenient and very safe.

If you’re currently thinking about having a hot water system installed in your house, you’re in safe hands. Green Planet Plumbing can brief you on everything you need to know about hot water systems and advise you on selecting a hot water unit that best fits your property and needs.

Hot Water Systems and How They Work

A hot water system consists of water-heating or water-cooling components. They also consist of heat-emitting elements like baseboards, convectors and radiators, that control the temperature of your water straight from the mains. Your property’s internal piping system connects the heat source to the heat-emitting units and your hot water system will then process your water so that it flows through your system at the temperature you select.

Types of Hot Water System

There are two main types of hot water systems: continuous systems and storage systems:
  • Continuous water systems
These are usually gas powered, but you can sometimes find electric models too. This water system only heats water when it is required.
  • Storage water systems
These systems are usually electric or solar water heater type. They pre-heat your water and store it in an insulated tank so that your hot water can flow on-demand without you needing to wait for that short while before the water temperature reaches the level you requested.

How Does a Storage Tank Hot Water System Work?

In storage or tank hot water systems, there is a heating element at the bottom of the water heating unit which keeps your water warm so that it can be readily available whenever you need it.

How Does a Continuous Hot Water System Work?

In continuous hot water systems, a heating element is connected to the pipes which heats your water as it passes through, but you generally have to wait for a short while before you get your desired water temperature. You can power your water heater by gas, electric or solar.

For more info contact water pump dubai or call us at +971 4 252 2966
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Installing a new centrifugal pump?

After carefully selecting the right size and materials, make sure the new pump is set up for success with proper installation. Setting the base correctly and aligning the pump is crucial. It’s also extremely important that piping to the pump is done properly.

Pump piping design is sometimes overlooked when setting up new installations. The focus is more on the equipment than the pipes that supply it. However, when installed with inappropriate piping arrangements, pumps can experience premature and repeated failures during the life of the pump. Maintenance teams will regularly repair the pump, effectively treating the symptom instead of the true problem.

Knowledge and resources are extremely limited on this topic, except what you may find in the Installation, Operation, and Maintenance (IOM) manual (which is minimal). But by following these 6 simple rules, you can avoid premature pump failure and related pump piping pitfalls. For more info contact engineers at water pump dubai uae .

1. KEEP SUCTION PIPING AS SHORT AS POSSIBLE

Include a straight run pipe length equal to 5 to 10 times the pipe diameter between the pump inlet and any obstruction in the suction line. Note: Obstructions include valves, elbows, "tees", and etc.
Keeping the pump suction piping short ensures that the inlet pressure drop is as low as possible. The straight run pipe gives you a uniform velocity across the pipe diameter at the pump inlet. Both are important to achieving optimal suction.

2. PIPE DIAMETER ON SUCTION SIDE SHOULD BE EQUAL OR ONE SIZE LARGER THAN PUMP INLET

Pipe sizing is a balancing act between cost and friction loss. Larger pipes cost more, whereas smaller pipes impose greater friction losses on the system. In terms of diameter, discharge pipe diameter should normally match the discharge flange on the pump but can be larger to reduce friction losses and decrease system pressure. On the suction side, the diameter can be the same size, but oftentimes engineers select a size or two bigger, thus requiring an eccentric reducer. Larger suction piping on the suction side is usually preferred if the liquid viscosity is greater than water.  This also helps produce an even flow to the pump and avoid cavitation.

3. USE ECCENTRIC REDUCERS ON THE SUCTION SIDE

Consider using eccentric reducers on the suction side of the pump when a pipe size transition is required. Install the flat side of the reducer on the top when fluid is coming from below the pump. If the fluid comes from the top, the flat portion of the reducer should be mounted on the bottom of the pipe. The flat portion is designed to discourage an air pocket from forming at the pump suction.

4. ELIMINATE ELBOWS MOUNTED ON OR CLOSE TO THE INLET NOZZLE OF THE PUMP

Include 5 to 10 pipe diameters of straight run pipe between the pump inlet and elbow. This helps to eliminate the "side loading" of the pump impeller and creates uniform pump axial bearing loading.

5. ELIMINATE POTENTIAL FOR AIR ENTRAPMENT IN THE SUCTION PIPING

  •     Maintain adequate levels in supply tanks to eliminate vortices from forming and air entrapment.
  •     Avoid high pockets in suction piping, which can trap air
  •     Keep all pipe and fitting connections tight in suction vacuum conditions to prevent air from getting into the pump.​

6. ENSURE THE PIPING ARRANGEMENT DOES NOT CAUSE STRAIN ON THE PUMP CASING

Pumps should never support the suction or discharge piping. Any stress on the pump casing by the piping system greatly reduces pump life and performance.
Keep in mind that increasing the performance of the pump will help to make up for piping mistakes made on the discharge side of a pump. Problems on the suction side, however, can be the source of repetitive failures, which could cause problems for years to come if not addressed appropriately. Suction side piping problems cause the majority of pump issues.
Piping design is an area where basic principles are frequently ignored, resulting in increased vibration and premature failure of the seals and bearings. Incorrect piping has long been disregarded as a reason for these failures because of the many other reasons this equipment can fail. Many experienced engineers may argue that pumps with incorrect piping still function and operate as they should. This argument, although valid, does not make questionable piping practices correct.

Contact water pump dubai today with your questions about correctly installing and piping a pump! We gladly provide technical assistance to businesses

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1. TITLE BOX

The title box provides information about the pump model, size, speed, and other identifying criteria specific to the pump. If checking the performance of an existing pump, confirm that you are matching the pump to the associated curve.

2. FLOW

To start your selection, identify the amount of flow required from the pump. For this example, we chose 300 gallons per minute. The horizontal axis of the curve indicates flow.

3. HEAD

You will also need to know the total head the pump needs to overcome at the specified flow. For this example, we will use 100 ft. The vertical axis indicates the head. Follow 100ft across the curve intersects your flow line which indicates your performance point.

4. IMPELLER TRIM

Sometimes, performance points cannot be met with maximum impeller sizes. To accommodate for those performance points, centrifugal pumps allow for trimmed impellers.
Reducing impeller size limits the pump to your specific performance requirement. The curve lists the impeller diameters on the left side of the curve and the performance for each trim across as a bold line. Our selection is between 10” and 11” so a trim of 10.5” is appropriate.
Centrifugal pumps can also be limited by variable speed, which is the ideal means of control when several performance points are required by a single pump and not achieved by a single trim without system modification. Variable speed curves will be covered in a later post.

5. HORSEPOWER

Horsepower is indicated across the curve as a dotted line in this case at a downward angle. Our performance point is between the 10hp and 15 hp lines, we estimate this selection to require 12 hp.

6. NPSHR

Net Positive Suction Head Required (NPSHR) is important for proper pump operation. This is the minimum amount of pressure on the suction side of the pump to overcome pump entrance losses. 
The pump curve identifies the NPSHR, not Net Positive Suction Head Available (NPSHA). NPSHA is a calculation of the head the system is able to deliver. If sufficient NPSH is not met, the pump will cavitate, affecting performance and pump life.
More information about how system changes affect NPSH can be found in this blog post: “9 System Changes that Screw with NPSH”.

7. EFFICIENCY

When selecting the best pump for an application, efficiency is an important factor. On the pump curve, efficiency is the ratio of energy delivered by the pump to the energy supplied to the pump. The higher the efficiency, the less energy required to operate for a specific performance point. Pump efficiency numbers of 60-80% are normal.

8. MINIMUM FLOW

A centrifugal pump requires a minimum amount of flow to be moving through the pump to dissipate the heat created. On the left side of the curve, minimum flow is indicated by a vertical bold line; operation to the left of this line is not recommended and can significantly decrease the life of the pump.
Knowing how to read a centrifugal pump curve is essential to the health of your system. Running too far out on the curve, or too far back, can cause damage to the pump, excessive energy consumption, and overall poor performance.

Having a pump that won’t working, loses its efficiency, or is slow to prime? Ask us about it at water pump dubai We gladly provide technical assistance to businesses
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The ability to read pump curves is essential to long-term pump performance. In new applications, they aid in the selection of a pump that meets performance requirements. In troubleshooting applications, they help engineers and operators evaluate conditions and solve performance problems.

If you are new to pumps and fluid processing, reading a pump curve can be a daunting, confusing task. Just when you think you understand curves, you realize that different types of pumps (centrifugal, positive displacement, air-operated diaphragm, etc.) have different types of curves as well. In this post, we'll break down the anatomy of a centrifugal pump curve.

A centrifugal pump imparts energy on a liquid, and based on the system, has flow and head characteristics. The amount of required pressure the pump must overcome dictates where the performance point will be on the curve and how much flow is produced. As pressure increases, the flow decreases moving your performance point to the left of the curve. As pressure decreases, the performance point runs out to the right of the curve and flow increases. 
When looking at curves for a new application, there are many factors to consider. But in most cases, a selection should be made as close to the Best Efficiency Point, or BEP, as possible. The BEP is an operating point along the performance curve that shows the highest efficiency point for the impeller diameter of the pump. 

Ideally, pumps run at this point for their entire lives. But in real-world applications, system upsets and fluctuating demand cause pumps to operate outside ideal conditions. Here are some common terms you might hear when describing a pump running off its best efficiency point:

  • Operating away from BEP - the pump is operating at flows greater than or less than the best efficiency point
  • Operating to the right of BEP - operating at a higher flow rate than the best efficiency point
  • Operating to the left of BEP - the pump is operating at flows less than the best efficiency point​

Why does it matter?

Running a pump off its best efficiency point, one way or another can add, energy costs, but the biggest consequence of running off the BEP is an increased chance for failure.

Operating the pump to the left or right of BEP means the door is open to challenges like:
  •     Cavitation
  •     Excessive vibration, leading to premature wear of seals, shafts, impellers, and bearings
  •     Increased operating temperature caused by suction or discharge recirculation, vibration, or breakdown of lubricants
  •     Repeated failures that cost money and time to repair​​

Having a pump that won’t work, loses its efficiency, or is slow to work? Ask us about it at water pump dubai We gladly provide technical assistance to businesses and commercial.
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