Insulating of buried butterfly valve 1

[ccc123]

In case we have buried butterfly valves, what is the best recommended material for insulation and corrosion protection ?

 

[Ashereng]

I would suggest a "dry well". It gives good access, keeps the valve from contact, and you can insulate with formed or batten insulation.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[stanier]

If the actuator or handle is extended above the surface then you could use a butterfly valve with a fusion bonded coating. The bolted connections could be wrapped with tape or covered with patent grease filled caps.

Geoffrey D Stone FIMechE C.Eng;FIEust CP Eng

http://www.waterhammer.bigblog.com.au

 

[cvg]

direct bury valves are designed for underground service. Insulation is not generally necessary and corrosion protection is usually provided with factory coatings. If you have corrosive soils, ask your supplier for his recommendations on coatings. Note, if you do install it in a dry well in cold environment, than insulation will become necessary.