usually what is the ideal.. water pressure..

and flowrate for taps/ water outlets eg pipe and sorts ?

wah, why all the spec like overkill spec one..

btw MAX head means what ? 45m = 45meter ??

yup....

usually is like that... one.. unless u take measurement of the original pressure , cause you said direct...

then set ur pump to be similar.. then should be no problem.. usually the leak will be at the joints/fitting areas...

its always a 50/50 risk.. thats why is best to get the right pump that gives the right amount of pressure..

else will bocor here and there...

yeah been doing tons of research on pumps since planning to get one...

my flowrate, i was refering to "tap" not pump as pump's one can get from grundfos website the technical specification...

i check out some documents regarding what is the nominal flowrate for taps and sorts for malaysia but found nothing on syabas website and come across a very interesting article/documentation/guide by singapore's PUB..

http://www.pub.gov.sg/wels/Documents/Revis...equirements.pdf

they rated norminal tap flow rate should be abt 6 liters/min (in another words , on tap to the max, in 1 min should output/give about 6 liters)

from what i've read so far, the "ideal" pressure for home should be about 40PSI = 2.80 Bar = 280KPA

i'm guessing a double story house is about 30 meters the CH4-40 @ 30 meter puts out abt 0.5 / 0.6 liter a second , that is you pump UP from a ground floor water tank.. but if ur water tank is on the roof .. i'm not sure how to see or calculate

so 0.5 liter a second = 30 liter a minute.. so for a nominal tap flowrate of 6liter/min , CH4-40 will give you support for abt 6 open TAPS maybe minus 1 or 2 taps, if got shower rain/rain shower...

ps : this is my opinion and based from what i've read and understand and calculated, ONLY , i don't own the pump YET.. , those that have actually used it can give a better insights...

This post has been edited by JinXXX: Apr 15 2011, 02:22 PM

will be cheaper or priced around the same ?

grundfos is good... just that the price is , if have money better take grundfos, can last long long...

if no money .. have to opt for other alternative...

grundfos pump for house can generate max 10bar pressure, thats why the controller is there to controller the pressure aka on/off switch

if ur pvc piping is class 7 PVC pipe then can stand up to 32 bar for 15mm PVC size...

problem is the joints, if your plumber did it correctly then no problem else might leak abit...

just curious,

those polypipe/hdpe pipe 25mm, what is the approx market price? ,

sked kena chop when i go buy a few meters...

whats the default stop pressure for the grundfos units ?

since they have those micro-controller/pressure sensor ?

thats like 2.8 bar,

usually those new polypipe can stand until 12 bar PN12.5 while the fittings cam go until 16BAR

old piping is old piping hehehhe

because of 1 person.. most of the houses on the same pipe has less pressure...

another thing that i notice if you hook ur pump directly, and if there is a water leakage and there is sand/rust and etc bye bye to ur pump

and also, u could be FINED...

hey just wanna ask since its related to pump...

how do we actually upgrade the water tank side..

for those that is kept between the roof and ceiling ?

cause usually the height is equal to the space between the support roofing frame.. so if i want ta have a bigger tank how do i do it ?,

other than hooking up another tank ?

i was more of refering to how to bring the bigger tank in to the roofing/ceiling cavity...

since the distance of the support beams = how high/big a tank i have..

my tank is sitting on top the horizontal support frame which in turn sit on a wall ...

i think i need to draw something out to convey my message in some sense... lol

---

Added on July 27, 2011, 12:45 amim currently working in KL but im refering to my hometown house so far the design of tanks doesn't sit well at my back yard... more like my backyard no place for a tank unless its those "wall" tank...

well my tank sits on top the horizontal support beam which sits ontop of a wall segment..

yeah cut to smaller pieces, but better if can remove whole then you can reuse it to like store rain water for garden/wash car and so on...

---

Added on July 27, 2011, 11:02 amanybody know the approx pricing range for

http://www.conlexent.com/watertank.html

deluxe brand stainless steel tank ? , wanna survey if its worth upgrading or not..



This post has been edited by JinXXX: Jul 27 2011, 11:02 AM

king what ? got url/website ?

nvm found it

http://www.honesteel.com/tiki-galleries.php

just curious why you say king kong is the best ? when compared to deluxe ?

This post has been edited by JinXXX: Jul 27 2011, 10:52 PM

oh okie.. didnt notice that.. my bad

if its real grundfos its suppose to be quiet ..

did you place it ontop of those vibration mats or mounted it solidly onto the concrete ?

apart from that the sound comes from which part the impeller/pump section or the motor section...

if nobody uses any taps or etc and it keeps turning on or off..

means there is a leak somewhere...

cause if the piping is leak proof the pressure would maintain and the pump won't on...

so better check all taps/valve and hopefully nowhere is leaking...

cause usually the on and off switch pressure difference is about .x bars so its quite alot.. of pressure...

dont see a problem with that, unless its faulty la.. *my opinion*....

just curious...

does anybody that uses pump uses check valve aka no-return valve- single flow valve ?

i know those that pump from well uses it, what about normal home water usage.. ? if im not mistaken if your pump is higher than yr tank then only you require it right ? else no need?

if my tank currently is in my ceiling and i would like to invest in a new bigger water tank that can't sit in the roof
and i put it at ground level, and i dont wan to do a whole re-piping so just attached the new ground tank to the pump at the roof and install a check valve

so that the water won't flow back to the ground level tank.. is that correct , else the pump will be pumping air only lol...

sorry if my info was communicated wrongly.. plan to decommission my old tanks in the roof

PLANNING - to get a new 500gallon tank and put it as ground level.. lazy wan redo piping thought can just reattach the new tank outlet to the pump at the roof.. so it will work like pumping from a shallow "well" ...

rather than have to do wiring to place the pump near the new tank and do some kind of shelter for the pump and all

so thinking just put the pump same place and pull a new poly pipe with check-valve, as it will be cheaper and faster to implement

This post has been edited by JinXXX: Aug 1 2011, 10:33 PM