I've never tried the Durso standpipe. However, it seems that bulkhead drains drilled on the BACK wall of the tank near the top is a better plumbing option than standpipes. No space is wasted in the tank. Does anyone use this? How quiet is this alternative?
No I've never used that alternative but I think I't will make just as much noise but than your stuck with a configuration were you are limited in options to reduce the noise.
P.S. Everyone I have solved my problem my system is COMPLETELY QUIET and I mean COMPLETELY. guess what did i't? A $4.99 ball valve from home depot!