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When the flow increases, the discharge pressure of the pump decreases, and when the flow decreases the discharge pressure increases.

Do not let a centrifugal pump operate for long periods of time at zero flow. It will cause excessive heat generated inside the pump casing, and the pump will be running noisy and vibrate excessively.

Make sure your pump has a pressure gauge on the discharge side close to the outlet of the pump this will help you diagnose pump system problems. It is also useful to have a pressure gauge on the suction side; the difference in pressure is proportional to the total head. The pressure gauge reading will have to be corrected for elevation since the reference plane for total head calculation is the centerline of the pump.

Most centrifugal pumps cannot run dry. Ensure that the pump is always full of liquid by using a check valve (also called a foot valve) at the water source end of the suction line.

Valves must be suitable for the pressure involved and may require independent support for the large unit. When an isolation valve is needed at the pump suction and discharge side, gate valves should be used as these offer low resistance to flow and can provide a tight shut-off. Butterfly valves are often used but they do provide some resistance and their presence in the flow stream can potentially be a source of hang-ups which would be critical at the suction. They do close faster than gate valves but are not as leak proof. If flow must be regulated at pump discharge side during service, a globe valve is preferable for its smooth throttling.

Always use an eccentric reducer at the pump suction when a pipe size transition is required. Put the flat on top when the fluid is coming from below or straight (see figure below) and the flat on the bottom when the fluid is coming from the top. This will avoid an air pocket at the pump suction and allow air to be evacuated.

If you need to control the flow, use a valve on the discharge side of the pump. Never use a valve on the suction side for this purpose.

Avoid pockets or high point where air can accumulate in the discharge piping. An ideal pipe run is one where the piping gradually slopes up from the pump to the outlet. This will ensure that any air in the discharge side of the pump can be evacuated to the outlet.

Position control valves closer to the pump discharge outlet than the system outlet. This will ensure positive pressure at the valve inlet and therefore reduce the risk of cavitation.

When the valve must be located at the outlet such as the feed to a tank, bring the end of the pipe to the bottom of the tank and put the valve close to that point to provide some pressure on the discharge side of the valve making it easier to size the valve, extending it's life and reducing the possibility of cavitation.

The right pipe size is a compromise between cost (bigger pipes are more expensive) and excessive friction loss (small pipes cause high friction loss and will affect the pump performance). Generally speaking, the discharge pipe size can be the same size as the pump discharge connection, you can see if this is reasonable by calculating the friction loss of the whole system. For the suction side, you can also use the same size pipe as the pump suction connection, often one size bigger is used. A typical velocity range used for sizing pipes on the discharge side of the pump is 2.5 - 3.5 m/s and for the suction side 1 - 2 m/s.

There is a minimum height to be respected between the free surface of the pump suction tank and the pump suction. If this height is not maintained a vortex will form at the surface and cause air to be entrained in the pump reducing the pump capacity. Figure below shows the recommendation of minimum pump suction submersion.

Select your pump based on total head (not discharge pressure) and flow rate. The flow rate will depend on your maximum requirement. Total head is the amount of energy that the pump needs to deliver to account for the elevation difference and friction loss in your system.

Depending on the industry or plant that you work in, you will either select a certain type of pump or manufacturer or both. Manufacturers are normally a very good source of information for final pump selection and you should always consult with them, do your own selection first and confirm it with the manufacturer. They can help you select the right type, model, and speed if you have all the operating conditions.

In the selection process, try to match the flow rate with the B.E.P. (best efficiency point) of the pump. If it is not possible to match the flow rate with the B.E.P., try to remain in the range of 80% to 110% of the B.E.P.. Operating outside this range will lead to excessive vibration, recirculation and cavitation (see figure below).

When air enters a pump it sometimes gets trapped in the volute, this reduces the capacity, creates vibration and noise. To remedy, shut the pump down and open the vent valve to remove the air. If the pump is excessively noisy do not automatically assume that the problem is cavitation as air in the pump will create vibration and noise as well.

Viscosity is the main criteria which determine whether the application requires a centrifugal pump or a positive displacement pump. Centrifugal pumps can pump viscous fluids up to a certain degree, however the performance would be adversely affected. If your fluid is over 400 cSt (centistokes) in viscosity, consider using a positive displacement pump.

Avoid running a pump in reverse direction. Pump shafts have been broken this way especially if the pump is started while running backwards. The simplest solution is to install a check valve on the discharge line.

• Chemitreat Malaysia Sdn. Bhd., Malaysia

• Chemical Industries Sdn. Bhd., Malaysia

• Danisco Cultor (M) Sdn. Bhd., Malaysia

• Imerys Honaik (Malaysia) Sdn. Bhd., Malaysia

• Imerys Pigments (WUHU) Co. Ltd., China

• Malaysia-Sino Chemical Industries Sdn. Bhd., Malaysia

• Mey Chern Chemical Sdn. Bhd., Malaysia

• Petronas Fertilizer (Kedah) Sdn. Bhd., Malaysia

• Petronas Methanol (Labuan) Sdn. Bhd., Malaysia

• PT. Bumi Karyatama Raharja (Bukara), Taiko, Indonesia

• Revertex (M) Sdn. Bhd., Malaysia

• Safe Skin Corp. Thailand Ltd., Thailand

• Southern Acid Sdn. Bhd., Malaysia

• Synthomer Sdn. Bhd., Malaysia

• Taiko Acid Works Sdn. Bhd., Malaysia

• Taiko Bleaching Earth Sdn. Bhd., Malaysia

• WRP Malaysia Sdn. Bhd., Malaysia

• Anglo-Eastern Plantations PLC, Indonesia

• Asiatic Development Bhd., Malaysia

• Felcra Bhd.

• FELDA Mills Corp.

• Genting Bio-Oil Sdn. Bhd.

• IOI Corporation Bhd, Malaysia

• Kim Loong Palm Oil Sdn. Bhd.

• Oriental Group Berhad, Malaysia / Indonesia

• Pacific Rim Plantations Ltd., Papua New Guinea

• Porim Experimental Mill, Malaysia

• PT Gunung Sawit Bina Lestari, Indonesia

• PT Smart Corporation, Indonesia

• PTPP London Sumatra, Indonesia

• PT Salim Group, Indonesia

• Sime Darby Berhad, Malaysia

• Ta Ann Group

• Tabung Haji Corp., Malaysia / Indonesia

• Taiko Plantation Sdn. Bhd., Malaysia / Indonesia

• Teck Guan Perdana Bhd., Malaysia

• The Natural Palm Oil Co. Ltd., Thailand

• Wilmar Group, Indonesia

• Yee Lee Palm Oil Industries Sdn. Bhd.

• Acidchem International (M) Sdn. Bhd., Malaysia

• Agri Asia (Formerly Alami Vegetable Oil), Malaysia

• Bintulu Port Bulking, Malaysia

• Golden Hope – Nha Bhe Edible Oils Co. Ltd., Vietnam

• Golden Hope Bhd., Malaysia

• IOI Pan-Century Oleochemical Sdn. Bhd., Malaysia

• Kepong Edible Oils Sdn. Bhd., Malaysia

• Kwantas Bhd., Malaysia

• Mewah Oleo Group, Malaysia

• Natural Oleochemicals Sdn. Bhd., Malaysia

• Palm Oleo Sdn. Bhd., Malaysia

• PT Sawit Malinda, Indonesia

• PT. Salim Oil Grains, Indonesia

• Southern Edible Oil Indutries (M) Sdn. Bhd., Malaysia

• International Specialty Fats Sdn. Bhd., Malaysia

• Daikens, Sarawak, Malaysia

• HZ Green Pulp Sdn. Bhd., Malaysia

• Kimberly Clark, Malaysia

• Nibong Tebal Paper Mill Sdn. Bhd., Malaysia

• Oji Paper (Formerly GS Paper), Malaysia

• Pascot Paper Industries Bhd., Malaysia

• Siangpack Sdn. Bhd., Malaysia

• Taiping Paper Mills Sdn. Bhd., Malaysia

• Gula Padang Terap (GPT), Malaysia

• MSM, Perlis, Malaysia

• PT Permata Dunia Sukses Utama, Indonesia

• Alfa Laval (Malaysia) Sdn. Bhd., Malaysia

• CB Industrial Product Holding Bhd. (CBIP), Malaysia

• Ionic Enersave Sdn. Bhd., Malaysia

• KWI Far East Sdn. Bhd., Malaysia

• Westfalia Separator (M) Sdn. Bhd., Malaysia

• Ajinomoto Malaysia Bhd., Malaysia

• Asia Pacific Latex Sdn. Bhd., Malaysia

• Battery Industries Sdn. Bhd., Malaysia

• BENQ, Malaysia

• Colgate-Palmolive (Malaysia) Sdn. Bhd., Malaysia

• HGST Malaysia Sdn. Bhd., Kuching, Sarawak, Malaysia

• Jabatan Bekalan Air Parit Buntar, Malaysia

• Kong Guan Sauce & Food Mfg. Co., Malaysia

• Komag Malaysia Sdn. Bhd., Malaysia

• LRC Hospital Sdn. Bhd., Malaysia

• Lumut Powerstation, Malaysia

• Mafipro Sdn. Bhd., Malaysia

• Malaysia Mosaic Bhd., Malaysia

• Metek Kitamura Sdn. Bhd., Malaysia

• Motorola Inc, Malaysia

• Motorola Malaysia Sdn. Bhd., Malaysia

• QL Foods Sdn. Bhd., Malaysia

• Ramatex Textiles Industrial Sdn. Bhd., Malaysia

• Sandisk Storage Malaysia Sdn. Bhd., Malaysia

• Seagate, Malaysia

• Shinko Electronics (M) Sdn. Bhd., Malaysia

• Tai Kwong Yokohama, Malaysia

• Texas Instruments Electronics Malaysia Sdn. Bhd., Malaysia

• Unisem Bhd., Malaysia

The Company produces a variety of end-suction centrifugal pumps used mainly for industrial applications. We also manufacture a limited range of dosing pumps, diaphragm pumps, vertical sump pumps and oil skimmer pumps.

Yes we do, but subject to our design team and production scheduling constraints.

Please let us know if you have any special material requirements not already covered by our wide range of materials available. We are able to do this due to having our own in-house foundry.

You may procure these from our agents whom you bought our pumps from or from us if you had purchased the pumps directly from us.

You may refer to the relevant sections on our website for product information, trouble-shooting or drop us a message here and we will be happy to assist you.

Our pumps and parts are wholly manufactured in Malaysia. Kewpump has its own metal casting plant and manufacturing centre, and as such, have full control over the production processes and quality of our products. Please check out our corporate video and have a closer look at our facilities.

You may write to us directly here or contact us for confirmation. It is important to use only Kewpump genuine parts to avoid damage to your pumps or experience below par performance which would be unfavourable to your production process output and costs in the long term

You may contact the vendor who originally sold you our products and if this is no longer possible, you may contact us here and we will direct you to an authorised party in your country.

Challenges:

• Inspection and testing of incoming product to confirm quality conformance to specifications and quality deliverables

• Tracking, documenting, and reporting quality issues

• Monitor and analyze problem and report recurring issues to management and product development

Minimum Requirements:

• Diploma in Mechanical / Instrumentation & Control

• 2 years of QC experience in manufacturing preferred

• Fluent in Bahasa Malaysia, English and Chinese preferred

Challenges:

• To assist in product development and performance testing

• To efficiently troubleshoot & provide technical support to production

• To assist in Internal Quality Assurance and oversee maintenance of machinery & equipment

• Responsibility over the documentation and scheduling of machinery & equipment maintenance and calibration

• Identify areas of improvement for process and product

• Prepare technical drawings for production

• To assist in Manufacturing and Production Systems (MAPS) and Overall Equipment Effectiveness (OEE) monitoring

Minimum Requirements:

• Minimum Diploma or above in Mechanical / Manufacturing Engineering

• Minimum 2 years related working experience is preferred

• Experience & knowledge in ISO 9001:2015 Quality Management System

• Experience in using CAD/CAM software such as AutoCAD, Autodesk Inventor, Solidwork, Mastercam and Hypermill is preferred

• Basic knowledge in product design, reverse engineering and metal machining and fabrication

• Fluent in Bahasa Malaysia, English and Chinese is preferred

• Able to work independently and willing to travel within Malaysia and overseas

Challenges:

• Provide technical support for office network infrastructure, including PCs, laptops, printers, firewalls, and hardware labelling.

• Assist in managing and maintaining servers, CCTV systems, access control systems, and laser marking systems.

• Troubleshoot issues and identify root causes across multiple platforms, including ERP, Payroll, and Production systems.

• Offer user support and training on software applications; communicate with vendors or external software support as needed.

• Monitor and audit IT inventory to maintain an up-to-date record of organizational assets.

• Perform daily IT operations, including system monitoring, data backup (daily, monthly, and yearly), and routine maintenance.

• Monitor Fortigate Firewall and internet bandwidth usage to ensure optimal performance and security.

• Prepare IT resources for new hires, including setting up PCs, software installations, Google email accounts, and providing introductory IT training.

• Provide proactive technical support to minimize and prevent recurring issues.

• Administer antivirus solutions, monitor for threats, and respond to outbreaks promptly.

• Assist in ERP system administration and integrate Crystal Reports into ERP; develop SAP Crystal Reports as required.

• Possess working knowledge of SQL Server or other programming languages (an added advantage).

Minimum Requirements:

• Diploma or Degree in Information Technology, Computer Science, or a related field.

• Solid understanding of Windows operating systems, networking fundamentals, and basic server management.

• Good problem-solving skills, attention to detail, and the ability to work under pressure.

• Strong communication and user support skills.