Sprinkler max pressure, pressure regulators
Sprinkler max pressure, pressure regulators
(OP)
If i have a combined system with sprinkler, hose and hydrants, i will have differents pressure requirements, for expample, 100 Psi for hydrant, 65 Psi for hose and 20 Psi as minimun for sprinkler.All the system before, will be preasurized by one pump, so i will set my pump to the highest pressure, wich is the hydrant`s pressure (100 Psi). Should i use a pressure regulator for the hoses and sprinklers and wich kind of pressure regulator should i use?





RE: Sprinkler max pressure, pressure regulators
They should list the maximum pressures allowed. I don't know the requirements of hoses off the top of my head, but I use standard sprinklers up to 175 psi which is where I start using a regulator at the hose valves.
RE: Sprinkler max pressure, pressure regulators
does not appear you have your required pressures correct
juliomendez
why the question??
what do you do for a living??
RE: Sprinkler max pressure, pressure regulators
RE: Sprinkler max pressure, pressure regulators
once again how are you connected with this project??
owner, designer, installer, etc???
nfpa 13, 14 does deal with it
RE: Sprinkler max pressure, pressure regulators
Travis Mack
MFP Design, LLC
RE: Sprinkler max pressure, pressure regulators
cdafd, I`m desiging the fire supression system!!
RE: Sprinkler max pressure, pressure regulators
RE: Sprinkler max pressure, pressure regulators
The general rule is that when using listed fire protection system components, they are listed for a pressure of 175 PSIG. As Travis said, if your pressure exceeds 175 PSIG, you need to provide a listed pressure reducing/regulating valve.
If your looking for a manufacturer, try these folks:
http://www.cla-val.com/cla_PFire.cfm
For the most part NFPA standards do not allow the use or orifice plates.
Be cautious on the pressures when dealing with standpipes. If it is a Class I standpipe, and depending on your design, NFPA 14 will require pressure reducing valves at hose valves that can have discharge pressures > 100 PSIG.
RE: Sprinkler max pressure, pressure regulators
Most of us here have been actively engineering or laying out systems for 10, 20 and even 30 years.
Find an FPE or certified sprinkler systems designer because the little bit of money you'll spend sounds like it would be returned a hundred fold.