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  1. mattski72

    DB-9 cable length limit

    Sorry. I am obviously not the expert here. Feel free to humiliate me if neccessary, just teach while you do it. Down to the nitty-gritty. I have to move a 900 mhtz antena further away from my building in order to get a good reception. But I cannot extend the coax cable as that screws up the...
  2. mattski72

    DB-9 cable length limit

    What is it? I need a cable run of around 60 to 80 ft. Will DB-9 do the job or should I convert to something else and adapt at the components? Thanks in advance.
  3. mattski72

    Low Boiler Level

    RMW Thanks, yes you expressed the same concern I had about residual heat. In regard to "operating" I meant at normal temp and pressure, burner on (operating) or off(not operating). I am trying to determine when a low out of site level is a casualty and when it is not. Obviously, burner on...
  4. mattski72

    Low Boiler Level

    I have a 400 HP scotch marine, two pass, fire tube boiler. I am writing the casualty procedure for a low out of site boiler level (below the upper most tubes and the site glass) . If the boiler is not operating (burner not running) should it be treated as the same as when the boiler was...
  5. mattski72

    Washing Area dba to high

    So, Greg, what you are saying is attack it at its source, right? Makes sense. Looks like I should start by doing a detailed sound survey of the machines to determine the major contributor. Would my dba meter be adequate for that or would you recommend something else? Also, I assume a sound...
  6. mattski72

    Washing Area dba to high

    Thanks, IRstuff. I have been looking at hanging quilted fiberglass with vinyl-coated fiberglass cloth on the front side. I can buy it in pre-fabricated pieces and hang it from the structure above. It is marketed as sound attenuating. Any comments on this? I hesitate insulating on th machine...
  7. mattski72

    Washing Area dba to high

    Thanks Brian. I think that will work on the area I have a wall. Unfortunately, that only accounts for one forth of the overall set up. "Washroom" is industrial launderers lingo for the location of the washer/extractors. It usually is not a room at all. In my case it is open on three of the...
  8. mattski72

    Washing Area dba to high

    Merry Holidays All!!! I have a washroom of side loading industrial washer/extractors, nine in all. They are all hydraulically driven and at extract speeds run at 650 rpm. I do not have a frequency profile of the operation nor do I have the means to get one. I need to reduce ambient noise...
  9. mattski72

    High Turn Down Burner

    I currnetly have a Gordon-Piatt F16.2-GO burner (Duel Fuel:NG & No.2 FO) on my 400 HP Superior Boiler. With GP going out of business coupled with the incentives of a more efficient linkageless burner, I am now looking hard, very hard for a replacement burner. But I am looking for something...
  10. mattski72

    Bolt class and grade

    Thanks for the help guys. The links are great. As for the Google option, I must not be very good at it because all I got was a ton of sellers and distributers. But with your excellent assistance I found the answer I was looking for.
  11. mattski72

    Bolt classes and grades

    Is there a resource, web based preferably, that describes the different classes and grades of bolts and example applications?
  12. mattski72

    Bolt class and grade

    Is there a resource, web based preferably, that describes the different classes and grades of bolts and example applications?
  13. mattski72

    PVC, CPVC, PVCI, MPVC?

    I am replacing a (15%)bleach fill line to a bulk storage tank. A run of the piping will be outside exposed to the elements while most of it will be covered. I know PVC is a good choice, but can I mix PVCI with PVC. I know that CPVC has better resistive properties to caustic fluids but do I...

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