Sprinkler Head loss Calculation Sprinkler Head loss Calculation cool boy (Mechanical) (OP) 3 Feb 17 12:23 Does anyone has sprinkler head loss calculation spread sheet or ant software pls share........ RE: Sprinkler Head loss Calculation dbill74 (Mechanical) 8 Feb 17 16:15 For the sprinkler head itself, not that I know of, nor would I expect there to be anything since the head is the end of the system. Typically, they require a minimum pressure to operate as intended, such information would be available from the manufacturer. Now getting that minimum pressure to the head, there is tons of information out there. NFPA 13 has some guidance, but a search of the web for "sprinkler system sizing/design software" should yield plenty of options for you. RE: Sprinkler Head loss Calculation berkshire (Aeronautics) 8 Feb 17 20:21 cool boy , You may be better off red flagging this thread, and reposting it in forum 184 NFPA (fire)code issues, that is where the people hang out that are more inclined to know the real answer to this question B.E. You are judged not by what you know, but by what you can do.