Problem solved! The issue was indeed low flow, but not due to the line it was just a faulty valve. The stopper on back of the valve was loose so it was not closing or opening at the right position. In addition there was what looked like rubber sealant that had accumulated in the valve opening further restricting it. Huge thank you to everyone that gave the helpful suggestions on this forum! What was most unfortunate was that I can't find a reliable plumber here in my area 3 plumbers came to check the line, none of them wanted to invest the time to troubleshoot and verify the line was really bad. Took me a good part of the day to open the line up and fix it myself, but it's done right and cost me $100 for the meter and the pipe fittings vs the $3000+. Since there was no union by the meter I had to cut through the fitting to get it apart. Then I could see into the valve and see it was obstructed. Removed the valve, hooked up my shop vac and got good flow through the disconnected line. Then for good measure pressure tested up to 100psi and it held pressure just fine. Reassembled eliminated the valve put in a union this time. The local hone depot didn't have all the galvanized pipe parts I needed discovered there is a Orchard supply in thousand oaks this is now my new favorite hardware store!! Tested with manometer I get 8in static and 6 in now dynamic. Spa is heating now in about hour I'll be in there for a well deserved soak ??
Will start on the next problem later this week, my mobile app stopped working can't connect to pentair automation I think the network adapter is bricked but that's a topic for another thread...
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