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  • Users: dom253
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  1. dom253

    Adiabatic cooling of air CD Nozzles???

    Can anybody enlighten me please!!!!!! How much air cooling is possible through a convergence divergence nozzle. I am trying to cool compressed air from 35 Deg C to around 5 Deg C. Is this possible through a CD nozzle with an air flow of around 50 LPM and a pressure of 5 barg. I have a...
  2. dom253

    oxidative attack of GF nylon components

    Is it possible that the removal of a lubricating oil containing antioxidant additives may give rise to the nylon components within the system suffering oxidative attack. What i'm trying to say is........do the antioxidant additives in lubricant oil also act as an antioxidant film that...
  3. dom253

    oxidative attack of polyamide components

    Is it possible that the removal of a lubricating oil containing antioxidant additives may give rise to the nylon components within the system suffering oxidative attack. What i'm trying to say is........do the antioxidant additives in lubricant oil also act as an antioxidant film that...
  4. dom253

    Copper chloride corrosion of GFN 30%

    Does anybody have any experience of glass filled nylon 30%, being degraded by copper chloride. The GFN components are basically turning so soft you can crumble them between your fingers. I have an application where there purified water is used as a coolant. The purified water is chlorinated...
  5. dom253

    oil free water injected compressors

    Why is it that the condensate produced by oil free compressors (water injected, screw) is acidic. I have been told about this many times in the past, but have never had the reasons why explained. I understand the location of the compressor is important to air quality, and condensate pH, with...
  6. dom253

    nylon 35% Latamid turning to dust

    Does anybody have any experiences of glass filled nylon turning to dust. The application is a compressed air filter. The housing is aluminium, and the GFN component is fitted within the housing. It see's compressed air condensate, probably in the 7-16 barg pressure range, at anything upto 80...
  7. dom253

    solenoid valve buzz

    Hi Guys, I'm still kinda stuck on my solenoid buzzing problem. The application is a pressure vessel that uses a solenoid valve to activate the discharge of water. The valve system is balanced by the pressure in the system, and the solenoid overcomes a spring force lifting a valve off a seat...
  8. dom253

    valve buzz / chatter

    I have a big problem guys. I have a solenoid valve that is operated by a 230v coil. It lifts a small armature off a valve seat that allows fluid to be discharged. The valve discharge orifice is 3mm, and the working pressure is 14 barg. The problem is all of a sudden when the valve is...
  9. dom253

    water ingress

    I am working on an application where an automatic drain is fitted to a compressor wet air receiver. The drain fills with the condensate (under pressures up to 16 bar) and a float arm (like in your toilet) operates a valve which uses the compressed air in the system to operate a cylinder which...

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