This is getting so cool, every time I check the thread, you have a new element (like the surge tank!).
For folks who don't know, the surge tank is used to create a large scale flow surge in the tank by filling a large tank up with water, typically positioned higher than the tank and using large diameter pipes to add a sudden surge (like a tidal surge) to the tank. The butterfly valve is to instantly provide the sudden flow.
Do you have a complete design or schematic of the system we can see? I'd love to have a look! (before I come over on holiday of course)
With regards to the contractor removing scratches on the acrylic - I presume this means you will be draining down the system and then refilling with salt water?
For folks who don't know, the surge tank is used to create a large scale flow surge in the tank by filling a large tank up with water, typically positioned higher than the tank and using large diameter pipes to add a sudden surge (like a tidal surge) to the tank. The butterfly valve is to instantly provide the sudden flow.
Do you have a complete design or schematic of the system we can see? I'd love to have a look! (before I come over on holiday of course)
With regards to the contractor removing scratches on the acrylic - I presume this means you will be draining down the system and then refilling with salt water?