type of pump to be use as fire pump
type of pump to be use as fire pump
(OP)
hi
what is the advantage of using a horizontal split casing pump as a fire pump for sprinklers instead of an end-suction centrifugal?
what is the advantage of using a horizontal split casing pump as a fire pump for sprinklers instead of an end-suction centrifugal?





RE: type of pump to be use as fire pump
Naresuan University
Phitsanulok
Thailand
RE: type of pump to be use as fire pump
I'm thinking it is driven by flow and pressure demand only...in that end suctions efficiencies and therefore availability top out at flows below what split case allow. Lower flow (less than 2500 GPM) end suction might be better choice. Higher flow (more than 2000 GPM and upwards of 10,000) split case is the best option (and typically the only option).
I highly recommend going to a web sight such as the goulds site below, registering with their pump selection system (PSS), and trying some pump styles...model 3196 versus say model 3410.
http://www.gouldspumps.com/pss.html
If flow is where the two styles overlap in performance, it will just be a maintenance preference decision.
Stew
RE: type of pump to be use as fire pump
Naresuan University
Phitsanulok
Thailand
RE: type of pump to be use as fire pump
H Split pumps normally have a "flat curve" aroud its BEP, so its easy to comply the Fire Pump Code requirement to give 150% of its nominal Flow with a lowering of 35% of its nominal Head. However, some End suction Pumps may comply this spec. You just need to check if the pump is actually rated as a Fire Pump and so recognized for UL or similar.
RE: type of pump to be use as fire pump
However, if agreed with the Fire Dept Authority, you could select suitable pump of any type for the system.
RE: type of pump to be use as fire pump
RE: type of pump to be use as fire pump
Hovever, if the insurance underwriter stipulates a specific standard for the pump to meet - then maybe you are dictated to a particular pump style, but this is a complete new story.
Naresuan University
Phitsanulok
Thailand
RE: type of pump to be use as fire pump
Split case pumps are better performing, longer lasting and easier to service. They unlike end suction have bearings on both sides of the rotating element and dont have the problem of deflection. Their downside is that they are big and need more room.
RE: type of pump to be use as fire pump
Naresuan University
Phitsanulok
Thailand
RE: type of pump to be use as fire pump
Geoffrey D Stone FIMechE C.Eng;FIEust CP Eng
www.waterhammer.bigblog.com.au
RE: type of pump to be use as fire pump
ht
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