Automatic Overpressure Valve

16/05/09

This automatic overpressure valve is not standard on the K350 plans and is based on a design sent to me by one of the guys in the club.  The valve should automatically vent if internal pressure should inadvertently increase above external.  Excess internal pressure could cause problems, in particular blowing out the front dome.

This part is the top.  Here I have drilled and tapped the centre hole M10.  Faced the surface and am putting in the O ring groove with the special grooving tool.

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