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Pedrollo Pump insights

Business insights and articles written by our PEDROLLO PUMP SPECIALIST team at IPDI CC South Africa. (All rights reserved)

Wellpoint pump price

The wellpoint pump price varies greatly dependent on the outlet from which one purchases. Our webstore is extremely competitive. Visit our online shop today.

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Pump Selection, buying the correct Pump?

When requesting a pump, the supplier will need basic information to provide the correct pump selection. This is crucial in terms of selecting the correct pump for HEAD (The maximum height in static lift) and FLOW (Normally in liters per minute). A centrifugal pump performance curve is a useful tool which enables anyone to understand how a pump will perform. The supplier needs to be able to peg your pump duty to a specific pump curve. This will determine the most efficient pump selection for the duty. A pump develops a specific PRESSURE (PSI or BAR measurement translated into feet or meters head)at a specific FLOW (normally represented in gallons per minute or liters per minute). This value is dependent on the design of the hydraulic components of the pump. Pump selection is based on a specific flow in liters per minute to head in meters. A note on establishing flow. If you do not know the flow you require it is relatively simple to determine. Take it one step at a time and add all the outlets (Taps or sprinklers together). For industrial applications, for washing, heating or cooling, the equipment will have a flow and pressure data detailed on the design plate. Flow in a system must be established by understanding the requirement of the entire system. In our example we will use a house which has two bathrooms, a dishwasher, a washing machine, an electric geyser in the roof and a guest toilet with hand basin. Also a sink in the kitchen and an outside shower for the pool area. So we have the following outlets :- Bathroom hand basin taps 4. Bath taps 4. Shower taps 6. Toilet cistern 3. Guest basin tap 2. Sink in kitchen 2. Washing machine 1. Dishwasher 1. TOTAL 23. If we assume each tap will be required to deliver 2 gallons per minute (GPM) at 44 PSI or 3 bar.  We simply need to determine how many outlets we would expect to operate at any one time. It is unlikely that all toilets, all showers, all baths etc will be on at the same time. A good method is to take a third of the total outlets as your flow required for any single moment in time. In our example that represents 23 divided by 3 or 7.6 make it 8 outlets. This means a flow requirement of 8 X 2 = 16 GPM or 60 liters per minute. A note on the concept of PUMP HEAD.   Think about the highest point of your body, the top of your HEAD. It is the same idea when speaking pump selection. Head refers to the measurement in feet or meters from the center line of the pump (the pump shaft center line), to the highest point to which the unit is expected to deliver fluid. The above definition of head is limited to what is known as the Static head. In other words, this is the measurement of the vertical height which should never change,

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Static Pump HEAD, what is it?

The Static Pump Head is a term used to indicate the highest point which a pump must deliver a specific volume. Think of the highest point of a persons body. It is the head when standing upright. Static head is the head determined by the vertical height of the pipe system only. This is simply the actual height above the pump center body. Static head is not concerned with the developed back-pressure in the pipeline. There is another aspect that has influence on static pressure. Suction lift When one is drawing water from below the pump, the length of the pipe that extends below the pump to the surface of the water, is also a static measurement. This is known as suction lift and is normally added to the static head. A  pump with a 3 meter suction lift and a 50 meter discharge static head will have a combined static head of 53 meters. Beware of Friction Losses The static pump head must not be assumed to be the total head of the pump when selecting a pump. It is important to recognize the other factors that will influence the total head the pump will need to develop. Static head is at best the basic measurement of the demand on the pump. Friction losses and equipment losses will add to this head substantially if the pipe system design is not carried out by a competent person.

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Borehole, how much water can I extract

Borehole, how much water can I extract When trying to determine the volume of water one can draw out of a borehole, it is crucial to have an accurate water  yield test report. The driller of the hole will conduct a draw down test to determine how much volume the aquiver is providing to the specific well (hole). Should it be producing 100 litre per minute for example, we recommend that the user not install a pump greater than 50% of the yield. The reason for this is that the actual well will not pull down completely and the level in the hole will remain static with a 50% draw from the yield. Premature borehole collapse is encouraged by rapid adn excess extraction by installing borehole pumps which are capable of removing the full yield volume or even more per minute. Pedrollo 4 SR submersible deep well pumps provide a quality and efficient solution to both standard and solar power options. In South Africa we do not find any demand at this stage for 6″ pumps. Please contact our sales team for qualified free information and assistance in pump selection.

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water pump selection

water pump selection Water pump selection assistance from Pedrollo pumps South Africa The most common issue a prospective buyer of a water pump for domestic use has is trying to determine the type and model pump to purchas. The major stumbling block is not knowing what to ask for? Where does one start with providing information for the pump supplier in order to have them assist you in determining the type or size of pump you may need. Going through a load of pump data to try to determine the correct unit for your use is time consuming and can become stressful. When things get a little hectic, give us a call or mail us at support@pedropumps.com for assistance. BEFORE YOU MAIL OR CALL….. Here is a quick guide with the information you will need to give your pump suppliers:- Guidelines for your enquiry:- Please have the following information available when requesting a pump quotation. Flow rate, Pump fluid flow rate in litres per minute. Static Head, the highest point to which the pump must elevate the fluid is known as static head. It is measured from the centre body of the volute casing to the maximum vertical height of the discharge pipe above the pump. Friction Head, the friction loss that the fluid will develop while travelling through the pipe system. In terms of water this is easily determined by consulting a friction loss curve. You will need to know the total length of the pipe and the internal diameter of this pipe. Suction condition Another piece of information you will need is the suction condition you expect the pump to operate with, is it flooded (water level above pump centre body) self priming (pump is above water level) Submersible (pump is located inside the water body? Once you have this basic information, you are ready to send your mail or make a call to sales as per the contact details above. Please email this information for accurate and fast responses.

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Pedrollo self priming pumps

pedrollo self priming pumps pedrollo self priming pumps available in South Africa Self priming pumps by Pedrollo available in South Africa are of the JSW series. The JSW 1, 2 and 3. The self priming system developed by Pedrollo is the internal venturi Jet system. Sometimes these units are called jet pumps and are widly used for fresh water extraction form well points or shallow wells. These units operate by internally circulating one third of the water into the impeller eye via a venturi priming system. Pedrollo South Africa provides this range of product predominently to domestic users. The venturi self priming systems are capable of efficiently drawing from depths up to 8 meters at sea level. The Pedrollo self priming pumps stocked in South Africa are both cast Iron and stainless steel versions of the venturi priming system. Please call our sales team for further assistance with your pump selection. sales@pedrolpumps.com support@pedrolpumps.com Phone +27 31 777 1629  

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Pedrollo pump AL RED stainless steel

pedrollo pump al red Pedrollo pump al red model in stainless steel The pdf file can be downloaded here Pedrollo AL-RED_EN_50Hz AL-RED The Pedrollo Stainless steel centrifugal pump model AL Red is specifically designed to handle clean water for use in domestic, industrial, agriculture or aquaculture systems. The unit is an end suction design and is specifically for surface mounting in a flooded suction system. Typical applications would include water supply systems, fruit and vegitable washing, laundry water supply, water treatment plants, small greenhouse or external irrigation systems. In South Africa these units are also used by small fruit juice manufacturers for both mixing and decanting of the mixing systems. Coupled to our GM Mixers (request information) this pump makes the ideal equipment mix for the small fruit juice, detergent or laundry liquid softner manufacturer. Please email our technical help line for more information :- support@pedropumps.com    

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