AnsweredAssumed Answered

Maximum working pressure

Question asked by Abu Ismaeel on Oct 28, 2020
Latest reply on Nov 3, 2020 by Abu Ismaeel

1. As per NFPA 20

"4.7.7.1 The net pump shutoff (churn) pressure plus the maximum static suction pressure, adjusted for elevation, shall not exceed the pressure for which the system components are rated."

My question is, (in case of sprinkler protected building) does sprinkler is included among the above-mentioned system components. Because except the sprinkler all of my components are rated for 300 psi, but the only sprinkler is rated for 175 psi and my pump maximum working pressure is 205 psi.

Outcomes