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on the subject of the hydraulic ball (dump) valve:

I found a replacement dump valve in caster Carr (#49355K91) that had 1/4"
npt and was rated for 2000 psi for $18.64 , or a stainless with full ports
for $26.25 (49355k21). they both look like the original.

it seems like there have been several parts in the hydraulic system that
have failed beyond just the dump valve. Perhaps we could make a list of
these and the recommended upgrades. I would be glad to compile a drawing
showing these if members with flying aircraft could submit them. this would
help us "ground" (grinding?) flyers.

thanks,

Scott

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