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  1. surfdancer

    Precision pressure control of Oxygen and Nitrogen gas

    Since flow, weight and size requirements have not been specified, I can only offer rule of thumb guidance... 1. For constant output pressure, you do need a pressure regulator. Any other type of valve would require external feedback or adjustment to control pressure. 2. For this high of a...
  2. surfdancer

    Valve type for release of high pressure

    A back pressure regulator can also be used :)
  3. surfdancer

    Fuel Injection Design Primer?

    Actually no, hemi... I am examining at a fuel control system concept, but not at the engine, per se. The concept is geared more towards regulating fuel pressure, not mass flow (although the device has to be capable of regulating pressure within a range of flow).
  4. surfdancer

    Fuel Injection Design Primer?

    Fredbert99, You are correct. I am referring to the operation of an electrical, pulse modulated gasoline fuel injector. I want to learn more about the workings, as I have a need for a high speed pulse modulated valve for a 3600 psig methane application.
  5. surfdancer

    Fuel Injection Design Primer?

    I am curious as to the workings of a fuel injector. Not necessarily the nozzle design for atomization of liquid, but the electromagnetic valve characteristics. Any suggested sites I should start with?
  6. surfdancer

    Fuel injectors that can tolerate 120psi

    I was involved in some basic R&D work for LPG fuel systems. One issue that constantly hounded us is the heavy hydrocarbons (propylene, etc) in LPG polymerizing and clogging fuel injectors and other components exposed to heat soaks. As Franzh stated, most OEM systems are careful balances of...
  7. surfdancer

    Torque for NPT connections

    We use NPTF for steel and NPT for other metals and plastics. Our process is to use turns past finger tight for correct sealing without excessive deformation. This is based on best practices within the valve components industries. Torque flat out won't work for many of the reasons mentioned...

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