Pipe Repair and Valve Issues

Size isn't the issue...

The last time I answered similar questions..they paid me good

Are you game ? !

Globe valves are generally more cost effective in general usage. Gate valves are more effective if quick actuation is required using 2 or 3 lead screw threads to accomplish quick open or close.

Can you contact the original manufacturer of valve? When stationed aboard a Naval repair facility we'd often require replacement of old valves and surprisingly the original foundry was still in business usually in Pennsylvania or Ohio and Connecticut USA..

They didn't pay me good to source though I'd then need to re-manufacture on site so I searched diligently.

AWWA is a good source. I would also look for information from DIPRA-Ductile Iron Pipe Research Association and some of the old cast iron pipe manufacturers American Cast Iron, Clow, etc.).

Pipe lining might be an option.

Get all the information you can on current system, length and diameters of pipe, year installed, patches made, etc.

Every time a repair or patch is made on the system, observe or get a report on cause of break, condition of surrounding pipe, degree of corrosion, etc.

For the size of what you're describing, I hope someone is thinking in terms of what the big bucks and potential inconveniences are during replacement or repair. It can be done, but even with "cost effective" design and plans, this is a major undertaking.

Expect to do a lot of research and surveying of the market place for solutions. Good luck!

Concur on using liners, especially since it is likely time will be of the essence to get the system up and running rapidly. There are companies that do this, it is fast, effective, and, to my way of thinking, cost-effective. Do an online search using the key words "pipe lining" and see if you find several sources.