Sizing blow-off valve
Sizing blow-off valve
(OP)
Has anyone sized a blow-off valve based on the time it will take to empty a section of pipeline? The flow rate varies according to the water height which changes with time. The slope of the pipe(s) aslo has an effect of the total drainage time. Usually there are several pipe slopes up-stream and down-stream of the valve. This seems like quite an involved calculation.





RE: Sizing blow-off valve
RE: Sizing blow-off valve
As the specification above notes, the size of the blowoff valve is typically the same size as the force main. There is no need to calculate the size.
RE: Sizing blow-off valve
RE: Sizing blow-off valve