Fire pump station meter by-pass line

[mechanicaldup]

Hello,

Is it acceptable to fit a complete fire pump set (2 electric duty pumps, 1 diesel standby pump) discharging into a common discharge manifold with a single combined flow meter by-pass line and pressure relief line back to the storage tank all connected to the common manifold?

 

[BRIS]

It is an arrangement that we have used often in the Middle East but it depends where you are and what your regulating Authority may require.

 

[MR2Chuck]

This should be acceptable as long as all components and installation conforms to N.F.P.A. 20, Standard for Installation of Fire Pumps.

 

[firepumprep]

NFPA-20 does not allow this. It is a common mistake and is seldom caught by the local AHJ. It is common to find this configuration but it does'nt meet code.