It is a gravity pipeline from the final settlement tanks to a common pump station where the flow is then pumped back to the distribution chamber. It isnt possible to move the valves into a more accessible location because of this and also the fact we are working within a relatively confined...
The cost of one does not seem to be a significant cost but I have 6 tanks and therefore 6 valves. 6 manholes could cost in the region of £30000 (approx) which on a project that is already over budget is quite a significant chunk. I think it would be possible to group the valves in pairs and get...
Thanks guys, my original thought was to make it fully accessible within a chamber as like you have said it will require maintanence/renewing at some point. I was tasked with a cost/risk comparison which lead to the evaluation of direct deep burial - something ive never designed for but it seems...
Thanks for your reply. The valve does not require maintenence and so a manhole is maybe not cost effective. Do the valve boxes come in lengths of 8m? From what i can find they only seem to be short lengths say 2m max?
Thanks in advance for any further help
Nick
Hi all, I am looking for some advice on the direct deep burial of gate valves.
I have been asked to explore the option of placing a gate valve on an FST drain-down pipeline to allow controlled drainage of the tank during maintenance.
The only difficult bit being it is to be buried approx 8m...
