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  1. BGD011

    Adapter 1/2"-20 UNF to 1/2" NPT?

    Thank you once again Btrueblood for help! We will go with one of John C. Ernst liquid-level gauges.
  2. BGD011

    Adapter 1/2"-20 UNF to 1/2" NPT?

    Thank you much Btrueblood! The adapter is for a liquid-level gauge (sight glass) which has these 1/2"-20 UNF connections. The sight glass will be installed on the break tank (open to atmosphere), approximately 60" H. I briefly checked out John C. Ernest web page, it seems that they could have...
  3. BGD011

    Adapter 1/2"-20 UNF to 1/2" NPT?

    Could anyone, please let me know where I could find out the above adapter either Brass, Aluminum or SS material? Also, any suggestions on a good vendor of sight glass/liquid level gauges? The liquid is H20, T~68^F, Pressure < 20 psi. I checked out McMaster-Carr (e.g. part 3280k49), Grainger...
  4. BGD011

    Pump Mechanical Thermal Relief/Purge Valve

    I am looking for the above valve similar to one/part #7685. http://www.jeadams.com/pdfs/20_pressurereg.pdf But, the opening temperature should be 115 or 120^F instead of 140^F. Do you have a good vendor source or advice? Thank you!
  5. BGD011

    MagnaDrive Adjustable Speed Drive (ASD)

    Thank you very much Sed2developer! I am going to read it. It seems to me, looking briefly over this document as an excellent source of information. I agree with you, it has been done on a very professional way and also it has been presented very clear.
  6. BGD011

    MagnaDrive Adjustable Speed Drive (ASD)

    Thank you Jraef and Dpc! I checked out these old threads,... I found very helpful information, but these threads are old 3-4 years. Do you have any new information? I checked out also Coyote Electronics web site,.. Do you agree with the below? Variable Frequence Drives (VFD): Disadvantages...
  7. BGD011

    MagnaDrive Adjustable Speed Drive (ASD)

    I would like to know if you do have any experience and feedback using the above drives? Thank you in advance! Ref. http://www.magnadrive.com/
  8. BGD011

    400 vs. 350 Amps Circuit Breaker

    Thank you JBUDA54! It is helpful information.
  9. BGD011

    400 vs. 350 Amps Circuit Breaker

    Thank you Rbulsara! I see it now at that 2005 NEC table 430.52 last column. The motor is not on the VFD but there is an auto transformer starter. I was not sure what it is the maximum rating for these CB’s,... Thanks again!
  10. BGD011

    400 vs. 350 Amps Circuit Breaker

    We do have a 200Hp/460V/3ph/60Hz motor. The NEC tells me that the size of the circuit breaker (CB) should be 350 Amps. If we use a 400 Amps CB, is it violation of the NEC? FLA of this motor is 240 Amps. Thank you indeed in advance!
  11. BGD011

    ASTM A53 B Black Carbon Steel Pipe_size 24&quot;

    Thank you very much to all of you! John, I have seen the web page/link: ASME/ANSI B 36.10. (http://www.engineeringtoolbox.com/steel-pipes-dimensions-d_43.html)that you mentioned it, but that table doesn't include MWP of the pipe!? Thank you one more in trying to help me!
  12. BGD011

    ASTM A53 B Black Carbon Steel Pipe_size 24&quot;

    Thank you very much to all three of you for the help!
  13. BGD011

    ASTM A53 B Black Carbon Steel Pipe_size 24&quot;

    Thank you both for the help! I know that temperature of the fluid (cold water in this case, T<68^F) is important parameter. I also know for Barlow’s formula (it is not too good, talking about the bursting pressure and it does not include the pipe material, fluid temperature, pipe seamless or...
  14. BGD011

    ASTM A53 B Black Carbon Steel Pipe_size 24&quot;

    I am looking for the maximum pressure rating of the above pipe. Does someone have this information? On the Engineering Toolbox, it is listed only up to 20"!? http://www.engineeringtoolbox.com/astm-steel-pipes-working-pressure-d_775.html
  15. BGD011

    UL/FM Approved Fire Pump w/Mechanical Seal?

    Thank you much Stookeyfpe!
  16. BGD011

    UL/FM Approved Fire Pump w/Mechanical Seal?

    Thank you Stookeyfpe! The pump is a centrifugal horizontal split case, running at 1800RPM with an electrical motor, so if I understood it correct, it could be with a mechanical seal and UL/FM approved, right?
  17. BGD011

    UL/FM Approved Fire Pump w/Mechanical Seal?

    Could someone, please tell me can a fire pump be UL/FM approved with the mechanical seal or it has to be with packing? Thank you in advance!
  18. BGD011

    Pump Station: Center of Gravity?

    Thank you SprintCar for an advice! But, I am looking at the system with more components then just a CC/ES pump. There are the other items such as the electrical pump motor and control panel, suction and discharge headers, piping/branches with the PRV's, skid,... Do you have any additional...
  19. BGD011

    Pump Station: Center of Gravity?

    I am trying to find more information on calculating the center of gravity of the water packaged pumping system. Is there any software in the market place of USA to get it approximately info on the center of gravity of the pump station? Thank you in advance!
  20. BGD011

    Premium Efficient VHS Motors

    Thank you: rbulsara & dpc! I am trying to get something from GE and US Motors,... The motors to be nominal 3600RPM, 25Hp/3ph/60Hz/460V and each VFD/ATL started. Dpc could you, please tell me more about: "Remember the difference between nominal or average efficiency used in NEMA specs and...

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