Select and connect the drain pump

Following the recommendations of our portal, many suburban homeowners already mounted drainage system in the area and know how to divert water from the basement. We continue the series of articles devoted to the drainage. Last time we explained the nuances installing drainage wells, Today we'll show you how to choose a sump pump.

Why the need for a drain pump

The owners of suburban areas are often faced with the necessity of wastewater. This problem is generally exacerbated in the spring - time of abundant snowmelt. Excess water causes flooding portion, ditches, cellars and detrimental effect on the root system of many plants. In this situation comes to the rescue drain pump - equipment designed for pumping polluted water and wastewater. With "drenazhnika" can be flooded showers drain pit dug under the foundation, "fold" excess water turf area, save them from flooding the cellar, to eliminate the consequences of the pipeline break in the ground floor.

Moreover, as the experience of our users, the drain pump will gain even if the area is not yet assembled a full drainage system.

Barav (User FORUMHOUSE):

"Drenazhnik" I needed to pump the water from the site and pumping the well depth of 5 meters. The pump is chosen the most common - without the "bells and whistles". When buying it guided by the principle: quality-price. Anticipating the question, why I decided to pump water pump, rather than build a full drainage system on the site and thus save it from flooding, I will answer: do something anyhow - a more expensive. I made a calculated and drainage project that the estimate will exceed 150 thousand. rub. He postponed until its construction "for later", and to do everything - "budget" drainage - burying money in the ground. I do not want to redo it after 2-3 years.

Guided by these principles, Barav I decided as a temporary measure to run full drainage divert water drain pump. For this purpose it is further to the pump acquired hose 25 m long section of 1 inch and hard reinforced hose 6 m long section of 1 ½ inches. According to our user, he had trouble with connection hose to the pump, as hose does not fit on the pump fitting. Eventually Baravu It failed to mount the system length of 31 meters, which he decided to pump out water.

He threw "drenazhnik" in the deepest part of the water on the site and turned it on. The result of the drain pump can be seen in the following photo.

Barav:

The pump I "drove" in full. I am pumped to them all - and drain well, and the neighbor's basement, and runoff from the kitchen. Pump "plowed" for 5-8 hours a day throughout the summer and autumn. Moreover, he has worked so quietly that I sometimes came and checked if he does not turn off.

In total drenazhnik he worked for 7 months. It is approximately 800 hours and during this time siphoned about 8,000,000 liters of water, with the pump had to be pumped out of the pit, even a mixture of water and clay to sand.

Barav:

I operate the pump in the toughest conditions, in very dirty water, even with "dry running", which caused him damage. "Opening" pump shown that the motor is filled with water, which has got there because of what has been clogged air outlet (it is under float fastening), which had to be periodically cleaned.

Despite this final, our user has decided to buy a new "drenazhnik", but now - strictly adhere to the rules of its operation.

Basic principles of the drain pump selection

So we know that the drainage pump designed for pumping contaminated water from ditches, pits, drainage wells, cellars, etc. Now it would seem, we can only go to the hardware store and buy the drain pump. Herein lies a few "gotchas" to be aware of in advance. The first of them - the market offers a huge selection of dewatering equipment. To select a pump that is needed for you, you need to narrow down your search criteria. This requires answers to the following questions.

What is different from the fecal drainage pump

Indeed: and drainage and sewage pumps are designed for pumping dirty water and sewage. Those. - liquids containing various inclusions. So why not pump out a septic tank and a pump, and a pit in the pit for the foundation. Not so simple. The composition of the waste, its temperature, chemical composition of the mission depends on the pump. We will consider this aspect in greater detail.

Submersible pumps are designed for pumping waste water containing solid impurities (inclusions) of a certain size - typically 5 to 40 or more millimeters. The allowable size of solid particles which may pass through the mechanism established in instructions to the pump. To protect the mechanism from ingress of large solid objects - stones, gravel etc., a size above a certain structure, the suction side of the pump to protect the metal mesh.

Sewage Pump (if equipped with a knife-grinders, intended only for grinding organic waste and fibrous inclusions) is used to pump water containing no solid slurries, because he has no filter to retain such inclusion.

In addition, most of the drainage pump is designed to pump water at a temperature not exceeding 35-40 ° C. Therefore, if the pump is necessary for pumping hot wastewater (kitchen, bath, baths, dishwasher), or if you want to drain the basement, filled hot water due to the breakthrough of hot water supply system, it is necessary to select "drenazhnik", intended for use in such "hard" conditions. Those. with temperature, allowing its operation at 70 ° C and higher degrees.

It is important to take into account the chemical parameters of the pumped water. If the pump is to work in a hostile environment, the materials from which it is made, are increased corrosion requirements. There is also a drainage and sewage pumps are designed for pumping sewage and waste water containing solid inclusions.

Therefore, before purchase of the pump first carefully we read instruction - for what in which water and any inclusions (particle size) it can be pumped.

Do not try to use the "drenazhnik" as part of the water supply system of a country house, as pumps of this type do not provide sufficient pressure.

Remember that the submersible pumps started to operate in pure water (for example, for supplying water from the well), not designed to work with dirty sewage.

What are the types of drainage pumps

To simplify selection drainage pumps can be divided into two groups:

• Working on the surface.
• Submersible.

From the name, where he works, "drenazhnik". Surface drainage pump is placed near the site of the water pump. Then, the bottom of the well or drain hole falls hose through which the pumping waste. The pump operates in automatic mode. When the liquid level rises to a certain value, due to the float (rising with the liquid) pump is activated and begins to pump water. But more widespread submersible pumps are the most convenient to use. Such a pump is fully lowered into the pumped liquid. Unlike surface "drenazhnika", such a pump is not afraid of rain and moisture, and therefore, better able to work on the site and is not affected by adverse weather events.

Important: submersible pump (its motor) is cooled by a liquid in which it operates. To protect the pump from "dry run" - "dry running", submersible pumps equipped with float switches. Float disconnects and activates the pump upon reaching a certain level of liquid.

When installing the pump monitor the fact that the float has a so-called free "stroke". Do not cling to the walls of the well, the branch of the pit edge, etc. Another important characteristic of "drenazhnika" - is the level of empty (it is prescribed in the instructions to the pump). Those. what level of water may remain on the bottom of the tank, after which it will stop the pump to pump. This value may be ≈ 20-50 mm. The pump with such parameters can be relevant if necessary drying of small containers and flooded areas almost "dry." In the pumped water should not be present larger abrasive particles.

What are the main criteria for selecting the drain pump

When "drenazhnika» to draw attention to two main characteristics:

• Pump capacity l / min or m³ / hour. Those. the amount of fluid pumped for some time.
• Head. This value indicates at what height (the height difference between the installation site and the point of discharge) can be pumped wastewater. This parameter affects the ability of the pump to pump drains a certain distance.

Consider in more detail the second parameter.

Xxxl (FORUMHOUSE User):

I want to buy the drain pump. I need to pump water out of the pool. The height of the basin - about 1 meter. I began to study the technical characteristics of the pump vending me and saw a parameter: the maximum pressure - 14 meters. What does this option, and how far will this divert water pump?

Andrew 203 (User FORUMHOUSE):

This parameter shows how high the water will raise the pump. Also take into account pressure losses in overcoming the hydraulic resistance of the pipeline.

From here: we need to be translated for the calculation of the vertical to the horizontal. About the loss ratio in the horizontal pressure will be equal to 1:10. Those. 1 meter head vertically is 10 m horizontally.

This ratio = 0.1. Based on these data, the following tasks:

"Drenazhnik" set in the well at a depth of 5 meters, the length of the pipe for discharging waste water - 20 meters, then the water gets into the ditch. The minimum pump pressure is: 5 + (20 * 0.1) = 7 m So we need a pump with at least 7 meters.. For the "insurance" and obtaining the guaranteed pressure at the outlet of the pipe may be added to the resulting More figure 3 m. Ie - pump with a pressure of 14 m, is ≈ 140 m on the horizon.

It is also important to choose a suitable hose diameter, since underestimating the its cross section, we will "strangle" the pump. For example, by attaching to it a bight ¾.

Andrew 203:

If the timing pump "do not burn," then you can put the hose in three-quarters¾ (≈ 19 mm), to pump the water if necessary to quickly, with a quarter inch 1 ¼ (≈ 32 mm).

Sergey N (FORUMHOUSE User):

If it is necessary to quickly evacuate the water, it does not save on parameters (power) of the pump and think about the conduit of larger diameter.

Tip: If you need to connect temporarily drenazhnik - mobile, you can use a rubber armored hose. When steady, constant connection, you can use HDPE pipes of 40 mm.

This article details the features of HDPE pipe installation.

xxxl:

In the end I bought a pump with a maximum pressure of 9 m and max. capacity of 12 m³ / hour. To it suitable hoses from 1 inch and above. I took hose 32 mm diameter and 25 meters long. Lower the pump into the pool to 14 m³. Shakes is good, but hard to drag hose. Then I left the inch hose 3 meters (the part that goes from the pump), as to him, through the tee, attach the hose to the¾ on20 meters.

Our adapter user needed to do one more outlet to ¾. On draining basin and irrigating trees (hose to ¾) took ≈ 3.5 - 4 hour. If pumping was carried out through a hose of 1 inch, then, according to our user pool would be emptied for 1.5 hours.

Conclusion: there is no one universal drain pump, suitable for all occasions. Each situation should be considered individually and choose the appropriate equipment.

The topic can be obtained FORUMHOUSE tips for choosing a drain pumpand to know, independently determine the level of groundwater Location on. Also see assembling submersible pump workshopand find out how to choose a hose for the drain pump.

In this video tells how how to build a basement with a high groundwater tableYou can also view all nuances drainage device.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

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