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  1. JavaMoose

    Polymers for weapons?

    I used to work for Bushmaster Firearms. They make a carbon-composite AR-15 (Upper an Lower) that we injection molded on site. It is made from off the shelf carbon fiber pellets designed specifically for injection molding. A note of caution, before you just go off and pick a material to...
  2. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Montemayor, I just want to address one of your points: "3. If ABS plastic piping was used to combat possible corrosion on the suction side, why wasn't it used in the underground portion of the low pressure, suction gas flow? That position of the piping is the one that is most prone to carbonic...
  3. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Ah, gotta love the not-really-anonymous internet. Airsmybag, thanks for adding some more detail to this topic. I just want to make it clear to you that I posted this - not to call you out or put blame on anyone (though I can see how my wording could have been better in earlier posts) - just to...
  4. JavaMoose

    Leaking PVC Header in Curling Club Brine System

    VPL, Thanks for the heads-up, meant to include the link. Thanks, Joe LINK: http://flexpvc.com/cart/agora.cgi?product=Barb-Manifolds
  5. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    How would I go about calculating the amount of water a deliquescent drier would remove if used in my set-up? We're talking pretty low flow here, the MAX the system could push is 30SCFM but we will really only be using 2-3SCFM during the day (none at night). Unless of course you're saying a...
  6. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Just digging around myself, what about using a deliquescent drier system to remove the water from our wet CO2 supply before it gets to the compressor?
  7. JavaMoose

    Leaking PVC Header in Curling Club Brine System

    Hey PRPA, I came across these the other day when looking for some odd PVC and thought of you and your brine distribution system. Something you might want to bookmark/keep in your back product for the future. Looks like the largest they list is 2" main, but it might be worth checking with...
  8. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    What's the benefit to that over activated alumina?
  9. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Looks like we might be adding a 500# activated alumina dryer system versus replacing the entire compressor system.
  10. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    PMover: According to him, he has configured many wet CO2 systems. I wasn't the guy that brought him in, but this CO2 system impacts my systems that I've designed. I don't know anything about CO2 compressor systems (don't think I ever said that I did) and was trying to sort the wheat from the...
  11. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Here is a flow diagram for the compressor system, this does not include the supply line. The assumption made on this diagram is that the inlet temperature would be in the 130*F to 175*F range, however after traveling through 150ft of steel pipe and 140ft of ABS pipe, I believe it will be much...
  12. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Montemayor, Sure you aren't our consultant? ;) It may very well be that the outside engineering firm the specified this equipment screwed up big time, something that will cost them - not us - in the long run. I will work on putting together a flow diagram, until then let me try to fill in...
  13. JavaMoose

    CO2 Compressor System - "Expert" Second Guessing Design

    Just need some help from some experts on the board. We have a CO2 compressor system that was designed for us by an outside engineering firm (choice from on high) that is now being questioned by an outside Engineer that was brought on as a consultant (again, decision from on high). His concern...
  14. JavaMoose

    High Precision Machine Design & Build: what learning resources?

    Talk to NIST, they were invaluable when we were designing a 3-Axis milling machine that held 1 micron accuracy (across a 12 inch workspace). They have a team that has a lot of real experience with high tolerance machines. All of the other suggestions thus far are great resources as well, worth...
  15. JavaMoose

    Celebrating Spirit, The Mars Rover

    Greg, you aren't kidding! I've burned almost a full (slow) Friday reading that blog. Really interesting and enjoyable to read. Make me wish I was over at JPL (yeah, like that would ever happen!).
  16. JavaMoose

    Hose Barb Fitting Specifications - Do they exist?

    dgallup, We do use a clamp, but it seemed like we needed excessive pressure to get a leak-free seal. Our process fluid is sea-water or well brine-water, pressures range from .35 barg to 3.5 barg. I think maybe you hit the nail on the head, we messed up by not providing the...
  17. JavaMoose

    Hose Barb Fitting Specifications - Do they exist?

    Hmm, I just realized, I probably should have posted this in the machining forum. Well, I don't want to double-post and it seems like either spot would fit. Mods, If I'm wrong, please move the post to the appropriate spot.
  18. JavaMoose

    Hose Barb Fitting Specifications - Do they exist?

    Are there any US specification for dimensions/tolerance for barb fittings used with hose? Specifically, we have had problems with our manufacturer making barb fittings that are far too loose when used with standard ID hose (PVC, spiral reinforced). For example, hose is 50.8mm ID and the barb...
  19. JavaMoose

    Process Water Filtration

    Try giving Harmsco a call. I've dealt with them for a 200gpm filtering application very similar to yours, though it was sea-water, they were very helpful and have a great product. They can even do a fully skidded system, if need be. Worst case, it will give you an idea of what size/type of...
  20. JavaMoose

    "Large" Full-Bore Trunnion Ball Valves - PVC

    Breaker, The system is a continuous service 30K liter sea-water/brine-water system, on a tight budget. Lined valves tend to be really expensive, same with exotic metals, non-metal seemed to make the msot sense.

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