I am working on an untestable fire pump with an “N” shaped RPZ in the suction
line. They (just) have the 10X diameter distance on the feed, but the suction
pressures are very low (15 psi). It seems that an “N” shaped device would
create a lost more turbulence than a standard straight one. Consequently,
should the distance of straight pipe requirement be greater for this
arrangement?
Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860-535-2080 (tel:860-535-2080) (ofc)
860-554-7054 (tel:860-554-7054) (fax)
860-608-4559 (tel:860-608-4559) (cell)
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