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  1. moiz19670309

    SKF Bearing identification

    Thanks All Well we have a Chuck Assembly. When I disassemble it I found this SKF bearing. I noticed that text written on it SKF 51134 M/DH. I searched Google for the full text and was unable to find the meaning of last two alphabet. I downloaded the SKF latest catalogue and search the section...
  2. moiz19670309

    SKF Bearing identification

    Dear I have a SKF bearing having this information. SKF 51134 M/DH Please explain what DH stands for. Thanks
  3. moiz19670309

    Seal Housing Jurisdiction

    As per NB-3411.1, Pump Seal Housing and Seal glands falls under the jurisdiction of ASME. Does this means Mechanical Seals have to be ASME qualified . Hence, Mechanical Seals needs to have qualifications as per ASME requirements. I am totally not clear about application of ASME on Mechanical...
  4. moiz19670309

    Mechanical Seal ASME Jurisdiction

    Please provide some information about. Is Mechanical Seal fall as pressure boundary as per ASME. Or does it's seal faces falls under the pressure boundary limit. I am unable to find explicit answer to this question. Please provide any ASME article reference to clarify.
  5. moiz19670309

    Hello everybody, Questions: 1

    Sir I am having this problem at my job. I have to use M10 brass bolts. The manual asks a tightening torque of 40 Newton Meter. Is this right torque. I have searched the net for Brass bolt torque chart but not found. Kindly help.
  6. moiz19670309

    Hello everybody, Questions: 1

    Hello everybody, Questions: 1). What is the maximum tightening torque for brass bolts of M10 size ? I want to tighten brass bolts on brass earthing bar. Could you recommend a comprehensive data sheet/table for this purpose ? Thanks.
  7. moiz19670309

    Material Identification

    It is a bolt, composition identified using XRF, surface well prepared, used double precision mode.
  8. moiz19670309

    Material Identification

    Any ASTM number for the Alpha Brass. I have to use this material for M10 bolt. The bolt has to be tightened to 40 Newton Meter torque. Any other suggestions for material.
  9. moiz19670309

    Material Identification

    Ni 0.06 Cu 61.44 Zn 38.39 Nb 0.11 Please help me to identify the above material.
  10. moiz19670309

    Shaft and impeller fit

    Dear Geesaman The pump is Boiler Feed Water Pump, vertical type.
  11. moiz19670309

    Shaft and impeller fit

    What is the general rules for shaft and impeller fit. I have a straight shaft who's outer measured diameter is 97.4 mm. The shaft has a key 12 mm key way. At this dia a impeller fit on the shaft with this key. I don't have the hole dia of impeller. I want to make a new shaft. What dia and...
  12. moiz19670309

    Jockey Pump Pressure

    Hello' NFPA 20 requires the head at 150% flow to be atleast 65% of rated head. It also requires the head at 0% flow to be no more than 140% of rated head. Being client some one is installing Fire Protection System in our plant. We have witnessed the Pump tests. During the jockey pump test, its...
  13. moiz19670309

    Pumping / Piping Circuit

    Thanks again to all valuable participants. Best regards. I will follow the advice and if required i will ask again. Moiz khan
  14. moiz19670309

    Pumping / Piping Circuit

    Ok , the water is to be used by Building Construction Contractor. We will use three 50% duty pumps. Peak demand is 300 m3/hr. And as you see we will have a standby pump. Based on advice by LittleInch i have modified the pumping circuit. kindly...
  15. moiz19670309

    Pumping / Piping Circuit

    LittleInch , i am waiting for your response, please.
  16. moiz19670309

    Pumping / Piping Circuit

    Thanks for the quick reply. Your assumption regarding usage is correct. Based on your advice i have modified the piping layout. Kindly check and provide comments. Thankshttp://files.engineering.com/getfile.aspx?folder=bf418b44-3ca3-43ba-85fb-e826ed1d02d9&file=Pumping_Circuit_2.png
  17. moiz19670309

    Pumping / Piping Circuit

    We have a water reservoir on its roof we are planning to install two vertical turbine type pumps. Each with a flow of 160 m3/hr with ahead of 75 m. We are required to deliver at a demand point a flow from zero to 300 m3/hr with a head of 65 m. The scheme is shown in the attached picture. My...
  18. moiz19670309

    Gear material for deminarlized water

    I want to use a simple gear mechanism under water. It is an open type gear train and i want to use water as lubricant. Hence my open gear box would remain submerged in water. The water is deminaralized. I want to use some grade of steel. Can anybody help me finding a material that can work in...
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