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One of the units I worked for had some of the same problems, mixing and contact time. O&M and Engineering came up with adding sections of the pipe (48") and connected them in zig zag (best discription I could think of) causing the water flow to mix with the change in direction and increase in...

There are companies that make stainless steel valves of that pressure and size, that would take care of the both of you needs.

I am a field mechanic/water operator, solar bee mechanical mixer, stay away from having moving parts in your tank. Your better off having something of a mixing chamber installed before the tank. Then there is contact time that needs to be address. Keep trying.

California State Univerity Sacramento, Office of Water Programs, both water and wastewater programs. Many are on-line and other are by mail.

Looking for the best way to set-up a pneumatic freeze t-stat on our airhandlers, that uses 100% make-up air. We have an older energy management system and is hard to modify for winter weather. We are looking to put in a simple pneumatic t-stat in the system. Any suggestions? Airhandler is two...

It seems that most of the responses are from people that have not worked the field much. Stick with a gate valve, at the higher pressures, you might need to put in bypass line, as for the blowdown, a strainer and PR valve can be attached easly. Bleed down the line with the PR valve, then remove...