Hi
I have measured a dimension of particles (L) as a function of time. I measured several particles for each time. Then I got for each time a mean value and a standard deviation. No problem with that. Then I plot my data (mean value of L and time) in the form:
L2 - Lo2 (L-squared minus...
Hi, I have TWO different tensile test data (x=elongation, y=stress) from the same material. I want to AVERAGE them and generate just one curve but the main problem for me is that the tensile machine took data at DIFFERENT X (elongation) values in the two tests.
So for example in one test I...
Hi, I have read about intermediate bowls in vertical turbine pumps that have vitra-glass lined waterways for maximum efficiency and wear protection. But I will like to know if this is a common process or if it is only applied by ITT pump companies (Goulds pumps, Bell&Gosset pumps, etc.). Also if...
Hi, I need to find technical information (power, rpm, etc) of a LEROID G24 Compressor, I can´t find their web page and any web page related to this product. It could be a spelling problem. I will appreciate your help. Thanks in advance. Ian
Hi,our Quality Assurance Department has to control several components having 1/8"NPT thread, I have heard that we have to use a plug gage and also a taper gage to ensure we get a proper seal to the threads. Can anyone explain me the difference between those types of gage?, what measures...
Hi, I have to test a submersible pump (1.6 - 2 Kw and 1.1Kw two pump models)that uses as a standard a 2HP 2 poles three phase electric motor 60 Hz (with all the factors is enough to the power required by the pump) . But now we want to assembly the same 2HP 2 poles 60 Hz but rewinded to single...
Hi, I have the following problem. We have to select pumps for a big pumping station. We have to deliver 6000 l/s, and we want to use 10 pumps (vertical turbine pumps) in parallel operation (600 l/s each one). I can calculate each pump in its line (with butterfly valves, check valves ) but then...
Hi, does anyone know the best flow measurement device for water without using turbine or ultrasonic ones. We need this device for 600 l/s, 1500 l/s, 750 l/s, 150 l/s. The water came from a river. The main problem is that we want to use one that allow us the minor distance required (for less...
Hi, I am working in an irrigation project, and we have to design the pumping station (10 vertical turbine pumps and 1 in stdby. There are channels for water transportation from the river and we want to use the Hidraulic Institute Standards configuration for the sump with the same calculate...
Hi, I have to deal right now with pipe diameters larger than 42" for an agricultural project ( I do not know what is the largest comercial diameter), but I have no information about comercial sizes, schedules or types of pipes. I will prefer to use steel pipes. So I will appreciate if...
I have purchase bolts for my company, but I have only specify the material (AISI 4140). This is because we have calculated that in the annealed condition it would work well. But I have read in some paper that this material could be use or could correspond to bolts - Grade 8. I know that AISI...
Hi, we are going to receive (import) NITRONIC 60 nuts in a large quantity, but is the first time we are going to see this material so we want to know how to recognize it. I mean, some kind of chemical reactive to put on, magnetic properties, color, I do not know, some tips that help our quality...
Hi, I need to know the minimum speed for a 300HP Hitachi (1740 rpm) submersible motor that work with a frequency converter. This motor is used with a 11 stage deepwell pump. Somebody tell me that it is at maximum 80% of its nominal speed, this is, he said, because with less speed the axial...
Hi, a purchaser have asked us about the Jominy test of some of the materials we use in our pumps, exactly about our pump shaft. What I want to know is if Jominy test cover all steels, I do not have right now the ASTM procedure to know the scope so I mean stainless steels and air hardenable...
Hi, a purchaser have asked us about the Jominy test of some of the materials we use in our pumps, exactly about our pump shaft. What I want to know is if Jominy test cover all steels, I do not have right now the ASTM procedure to know the scope so I mean stainless steels and air hardenable...
Hi, a purchaser have asked us about the Jominy test of some of the materials we use in our pumps, exactly about our pump shaft. What I want to know is if Jominy test cover all steels, I do not have right now the ASTM procedure to know the scope so I mean stainless steels and air hardenable...
Hi, I work in a pump company, and a purchaser have ask us about a part of a pump (nuts) made of Nitronic-60 (I have never heard about it), we only work with steels, stainless steels, and foundries, also with bronze, brass so I will appreciate if anyone can tell me where I can find the best...
Hi, I work in a pump company, and a purchaser have ask us about a part of a pump (nuts) made of Nitronic-60 (I have never heard about it), we only work with steels, stainless steels, and foundries, also with bronze, brass so I will appreciate if anyone can tell me where I can find the best...
Hi, I will like more about water pumps, because now I have to deal with them, I have read a lot but francly I have a lot of doubts. So I will appreciate a lot if you answer some of my questions:
1)How can I measure the NPSH - R in a new pump? Does I have to introduce friction losses and wait...
Does anybody knows how to find the mathematical relations for the pumps diagrams. I want to find efficiency only with the information of pressure and flow rate, as an equation, but for that I have to introduce the diagrams as data for math equations. I can put the Pressure-flow rate curve in a...
