HomeMy WebLinkAbout0130471-Plumbing (added fixtures)_ of ~,~~ ~n~ ~~ _
KAT#`a cA~cvuTi(~rt Fglt}`Stl£E`T
Information heeded far Kates Service Sizing
1. i}etnand of building in gal°lons per minute.
2. _~_ Lox pressure at u-ain in street (or at externaxt pressure tank).
3. ~ Difference #n elevation from main to meter for external pressure tank
to budding contras valve).
~r
4. o~ Size of xater meter. Cif applicable}.
5. ~
~,~,~ Developed ]ength froea main to meter (or external pressure tank to _
building control valve}. ~"~~,~~,~,,~-
You rKust first Find tlye Avatlable Pressure After the Kates lieter
for at byllding control valve}. 70 obtain this pressure, you'mttst:
6. 3.g Find pressure loss due to friction in inch diameter water
service.
7. `~.3 find pressure loss due to elevation, main to meter (or external
pressure tank to building control valve}. Mttitlply the difference in
elevation by .4:34 p.s.i.Ift.
8. ,~~ Find pressure loss due to meter. (from manufacturer ar AKKA}.
4. ~~~' Subtract the toss due to friction (Step 5>, loss due to elevation
(Step 7), and loss due to ~aeter (Step 8) frrxn the low main pressure
<or lox Ares-sure at external-pressure tank)tStep 2). This
catcuiation is the available pressure after the eater meter tar at
the building control valve). This ansr+er is entered its tune S, below.
Information Needed for Kates D#stribution Slzing
Using the following formula., find the pressure available for un#fors hiss
tp.s.i/100' of pipe) ~ _
A ,~, ~--(C t D x E) x 1D0
NiiERE: ~ f
A. ..~Q_-Rressc~re available for untfora~ loss (p.s.i.Jl(kk?* ~of M~i~e>.
~- 'fl~.~~.{Q AVdil~able pre55ure after water meter fat the building control valve
or low pressure at internal pressure tank). (See St~-p 9, above)
~• ~,_ Pressure needed at controlling fixture.
U. ....,rr~_.i.,~,~~ "i)ifferente in elevation between water meter (buildtng ctmtrol valve
or internal pressure tank) and controlling fixture
in feet ,~_ x .434 p.s.1lft.
E• ~~, Pressure loss due to water softeners, xater treatment devices, _
in;tantanet)us crater heaters and backfioK preventers which serve the
.controlling fixture. Cor-ventlonal water heaters usually do not have
a presSUre loss.
f• ~ Developed length from xater peter tbuildirrg control valve or internal
pressure tank) to controlling fixture in feet ~QQ_ x 1.5
kith pressure available for uniform loss, go to applicable table for distribution
Sizing.