In addition, these pumps can be used when lots of air has to be moved such as with well point dewatering systems. To do this, simply refer to the selection chart on page 3 where the full line of goulds pumps is listed by pump type. Material safety data sheet chemical resistance can vary with concentration and temperature. Material selection for impeller and casing is just as important as the pump selection itself. Material selection for wastewater pumps pumping services, inc. The basis for our comprehensive pump range are the three material groups metal, plastics and ceramics. Select combinations of metals as close together as possible in. Selecting the correct pump materials depends upon the proper selection of alloys suitable for the application and service environment. The first step on the way to the optimal pump is the selection between a centrifugal pump or a positive displacement pump. The number of different material types shall be minimized considering costs, interchangeability and availability of relevant spare parts. Bromine reprinted from world pumps guide to the selection of materials for pumping the halogen bromine in this second of a series of articles on materials selection for pumping corrosive, abrasive and hazardous chemicals, george black considers the problems presented by bromine. Irrigation pumps, in general, are driven either by engines or electric motors. Of the multitude of available materials, metallic and nonmetallic such as plastic and ceramic materials are preferred for centrifugal pumps, although the exact choice depends on the level of stress involved. A few suggestions to combat galvanic corrosion in seawater pumps are.
Many newer high alloy stainless alloys not widely used. Lowara is focused on producing high quality, reliable, costeffective pumping. One of the most commonly known formats is the chemical resistance table, which lists usually metallic materials according to their level of corrosion resistance to liquid media. Material selection for a centrifugal pump mumtaz ca 6 nm may give better life for a couple of years for acidic contaminants in hdyrocarbon service down stream waste water system. Chemical resistance and material selection guide for fti. Materials selection must consider both normal and abnormal conditions. Selection of pumps for optimization of pumpsystem interaction 4. Name email phone number business company name states application pump type. Water passing through the pump brings with it solids and other abrasive material that will gradually wear down the impeller or volute. The vibratory cavitation apparatus g32 is described with its two variants, the direct method using a specimen attached to the vibrating tip of. What is the process for a petrol pump license dealership selection process varies from company to company but there are certain requirements which are mandatory in order to obtain a petrol pump licence. There are a large number of pump materials selection options for seawater services, so recommendations on design options and materials selection will be provided in general terms.
Complete pump performance data and product information. Chemical resistance and material selection guide for fti drum pumps the information in the following guide lists the corrosion resistance of four materials used in fti drum pump outer tubes. Should it pump the hole dry and air enter the pump, it will stop pumping and become airbound. Equally important is the selection of materials of construction. As a result, higher demands are placed on the selection of material as well as the protection of the pump to ensure optimal longterm performance that provides a. The author suggests that when one or more of the following conditions exist, use saline water materials selection criteria for pumps. Pump materials for desalination plants encyclopedia of. Types and selection of pumps the mechanical device or arrangement by which water is caused to flow at increased pressure is known as a pump and the process of using a pump for this purpose is known as pumping. Cost effective materials selection for pumps neonickel. The following is a pump sizing problem to illustrate the calculations in this article. The following key factors apply to materials selection. The information accuracy of these ratings cannot be guaranteed, nor is it a complete list due to the extensive area of this field.
The pumps are manufactured with attention to strict material selection, quality design, and. This type of pump does a good job as long as the supply of liquid. To be eligible to obtain a license for the dealership of petrol pump, the individual must be an indian citizen and a resident of india, as per. Mechanical seal technology and selection eagleburgmann. In almost all cases in minnesota, the source is at a lower elevation than the user so the water must be raised to. Search by design point flow rate and head, set limits, correct for viscosity and analyze pump performance. Materials selection for neat methanol service cont. The most common impregants for mechanical seal faces are thermoset resins and antimony metal. Page 1 of 24 fire apparatus manufacturers association tc024 fama pump selection guide 160324 drm final 32516 fire apparatus manufacturers association.
Choose from over 6,000 sizes in goulds extensive offering. The selection of impregnants is a critical factor in determining the properties of the final material. Water piping and pumps distribution systems 4 the change in water temperature as the water moves through the system the water gets colder after each successive terminal because of mixing creates the possible need of larger units at the end of the main, which will complicate the selection of the zone terminal units and add cost. Ppt sucker rod pump basics powerpoint presentation. Pump selection guide brown brothers engineers australia. Among others, you will find current data sheets in pdf format available for download here. It is offered as a general aid in selecting appropriate materials of construction for handling a broad spectrum of aggr essive fluids and does not constitute a guarantee. M aterials cost effective materials selection for pumps this paper discusses the importance of materials selection for satisfactory pump operation using examples from. This wide variety of materials and more than 20 different. Pump selection parallel pumps intersection point good pump selection 50 saving energy in hydronic systems good pump selections.
Each time the pump spins, a specific amount of water is moved. You are told to purchase a pump for your manufacturing facility that will carry water to the top of a tower at your facility. Refer to the series specific flier pf series flier for. Positive displacement pumps are those in which energy is imparted to the liquid in a fixed displacement volume, such as a casing or a cylinder, by the rotary motion of gears. Materials used in the pump and pumping systems must be chemically compatible. The difference lies on one hand in the principle of transporting the liquid and on the other hand in the pumping characteristic. Naoh sodium hydroxidenaocl sodium hypochlorite reprinted from world pumps guide to the selection of materials for pumping naoh and naocl this third article in an ongoing series on the selection of materials for pumping corrosive, abrasive and hazardous chemicals considers the. However, some specific pumps such as boiler feed pumps. About materials selection materials selection is a complicated process that occurs as an iterative progression of. Control methods for varying pump outputenergy implications 5. If fluid is a trade name refer to msds material safety data sheet. Put the standard centrifugal pump above the liquid, and problems can arise, as it does not have the ability to create a vacuum and prime itself.
Better still would be to think of tipd for pump casing and pump impeller from acidic contamination if there is likely presence of dilute hclh2so4 dilute h2so3. A water system needs to move the water produced from the source to its customers. Goulds pumps and rheinhutte pumpen presents this centrifugal pump selection guide to assist users in making an easy initial selection of the best pump for a particular service. Lowara pumps are made in fabricated stainless steel, which keeps the water. Critical to deciding materials of construction for the pump. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. Although the comments will be directed to the pumping requirements and fluids of this industry, the general guidelines are applicable across the whole of industry, and show that cost effective materials selection is a complex operation. This means that this pump will work correctly, always and when the level difference between the end of the suction pipe and the pump suction port is less than or equal to 6. General material selection tables are available for specific types of stress. One of the most commonly known formats is the chemical resistance table, which lists usually metallic materials according to.
Pump sizing and selection made easy chemical engineering. Jeremy gregory and randolph kirchain, 2005 materials selection i slide 27 material index examples an objective defines a performance metric. Mechanical seals are constructed of a wide range of materials including metals, elastomers, and ceramics. They usually dont garner much attention until there is a problem with an application or if there are high maintenance cost to service the gasket. The following information is intended to be used as a general guideline for pump material selection. Impregnants include various plastics and resins, metals, and salts. Materials for saline water, desalination and oilfield. The pump is a centrifugal pump that will need to pump 800 galmin when in normal operation.
Pdf testing methods of cavitation erosion and the impact. This paper presents in detail several cavitation erosion testing methods commonly used in the laboratory. These can serve as a basic guide for determining pump materials. Primary consideration shall be given to materials with good market availability and documented fabrication and service performance. Additional wetted materials maybe found inside the pump tube such as alloy 625, ptfe, viton, etc. Metallic materials metallic materials take the form of cast materials, forged or rolled materials, or materials in some other product form. Each of these materials plays an important role in the operation of the seal. Unesco eolss sample chapters material selection and corrosion vol. Naoh sodium hydroxidenaocl sodium hypochlorite reprinted from world pumps guide to the selection of materials for pumping naoh and naocl this third article in an ongoing series on the selection of materials for pumping corrosive, abrasive and. Material selection chart this chart has been compiled from a variety of sources, including milton roy companys extensive experience in flow control tec hnology. Choices must be made between metals andor nonmetals for pump components that come into. In a slurry pump the impeller and inside of the casing are always exposed to the slurry and have to be protected accordingly against wear. Included in this list is the selection of the material of construction of the seal.
308 1320 546 331 581 718 334 848 951 344 44 610 739 739 461 96 199 817 155 607 356 1449 61 575 631 233 1017 495 1442 1350 1212 643 654 594 15 942 495