rehunn Wrote:
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> John removed the pipe section in the pumphouse
> that contained both the check and the drain valve.
> This blockage is something else, the
> system was correctly configured and the valves
> were within the pumphouse walls as would be
> expected to provide freeze protection. The
> blockage is interesting in that John put 150 psi
> into the line, a swing or poppet check with rust
> will usually not remain rusted at that pressure
> level ie that's over 700 lbs force on the flapper
> or poppet.
True Rich, and when I finally shut down the pump and closed the gate valve where I connected the firehose, it was a full 10 minutes or more before Tom opened the valve, and it was still under pressure. Nothing short of a gate valve would hold pressure that long without leakage.