Thrust Restraint at Underground Valve Discharge?

[drewnje]

A client is running a new 4" water service line onto their property. The pipe is going to be ductile iron and terminate at a 4" gate valve in a concrete valve box to which they will attach a hose to be utilized as needed for filling water trucks and such. The water line will supply approximately 225 gpm at 50 psi. Are thrust blocks needed at the terminal end of this water line? If so any advice on how best size and construct thrust restraint in this kind of application would be much appreciated.

Thanks!

 

[PEDARRIN2]

Type "thrust block" into the search box. You will find a lot of previous posts (mine included), which ask this type of question.

Your pipe size, flow rate and pressure are not that high, but not sure where the hose is connected. Is it in the valve pit or is there an elbow that extends to above grade. Since you are asking about thrust blocks, I would assume the latter.

I would look at

https://www.dipra.org/

This has a lot of valuable information on thrust blocks, restrained joints, and application. Read this and if you have questions, ask them.

 

[bimr]

Thrust blocks should not be used for this application. Mechanical joint restraints are the recommended thrust restraints that will effectively and economically restrain Ductile Iron Pipe (DIP) to mechanical joints below ground, for practically any application including valves, hydrants, and pipe.

See the previous discussions:

Link to previous post

 

[LittleInch]

Are thrust blocks needed?

What is planned connection of pipe to pipe or pipe to valve?
Are you fixing the pipe into the concrete box?
Is the box above or below ground.

What sort of forces are you thinking about from the hose?

There is an end force to consider, but how to deal with it is very site dependent in terms of elbow locations, pit design, DI pipe connection method you're using.

The posters above offer some good advise and links - read and understand the issues then apply to your particular design of which we have nothing other than your fairly basic description

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.