NMFIRE NFPA20 - 3.3.1 Pump Suction Pipeline for ESF and SCF

－21－
Warning
It is strictly prohibited to install filters in the suction pipe of SCF and ESF series fire pumps.
The filters have a high risk of blockage, which will seriously affect the fire water supply. See
“figure A.3.3.1.7”
FIGURE A.3.3.1.7
Suction pipe is
not allowed to
install Y filters
Installation error of
eccentric suction pipe