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Recent content by ccfoam

  1. ccfoam

    Combustion System Relief Regulator NFPA86 Code

    I'm looking for thoughts on the sizing of a relief regulator for a natural gas 18MM BTUH industrial furnace combustion system. NFPA86 (8.7.1.10) states "If inlet pressure to main gas regulator exceeds the pressure rating of ANY downstream component, overpressure protection shall be provided."...
  2. ccfoam

    Tolerance for Dowel Holes

    Good Afternoon I've learned a few things about dowels in my 25 years of Tool Engineering concerning dowel pins. 1. NEVER use dowels to resist forces, NEVER. 2. NEVER press fit a dowel pin into a blind hole, because you can't pull them out, you need to knock it out. 3. Press fit the dowel into...
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