I would like to know that for all the AUTO START centrifugal pumps ( Open valve start up) , whether it should be designed for End of Curve operation?

I know that for a 13R sprinkler system the underground supply has to be pressure tested for 2 hours, however in the 2007 edition of NFPA 13R I can't find where it states that. In section 6.4.2 it talk

It has come up recently by a fire inspector that you are required to match the fire alarm zoning per floor with the fire sprinkler system. Has any one come across this.

A large butterfly type control valve in a fuel-gas line has been installed in the wrong flow direction. Now, it will be difficult to extract the valve from the pipeline and turn it around because stru

What is the limiting factor of a Class 150 valve that has 125 psi working pressure stamped on it.

Many times I have heard people make a statement such as "In a spool with pipe and flanges, the flange will always be the weakest link with regard to MAWP".

I am preparing for a process caculation and some piping affairs for a gas transmition pipeline

I need to calculate the force on a fitting upstream of a pump (on the suction side) to determine whether restraint is needed across a flexible coupling at the pump.