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what is the average demand in GPD per capita? thanks

so you're saying Gary Slusser that if i choose 20/40 pressures it will give me a bigger tank and if i choose 40/60 its will give me smaller tank

thanks for the link. DRAWDOWN (in Gals.) is the available water volums in the pressure tank regardless of its source (from well, cistern or storage tank). these drawdown will be divided by the drawdown factor to get the size of the pressure tank (in Gals). apparently drawdown depends on the...

what causes cavitation and what is its remedy?

what would be the type of pump to be used in lifting water up to the elevated water tank installed on the roof deck of a 5 storey building? the pump will draw water from a cistern tank about 8' in depth below the natural ground line...thanks

knowing the HP and GPM of pump and Elevation Head. my question is how to determine the discharge pressure at the pump?

ok. is the pump delivery rate in GPM mentioned the same as the demand in GPM at the house? let say the demand at the house requires 8GPM. should i also size my pump at 8GPM?

ok. when should a centrifugal be used?

i just learned that calculating a drawdown for pressure tanks is the poduct of pump delivery rate in GPM/LPM and pump running time? is there an ideal or minimum pump delivery rate for residential uses and what is also the ideal pump running time? im clueless..pls help. thanks

what is the difference in terms of function between jet pump (deep/shallow well) and Centrifugal pump? i have known that below 25' well a shallow well should be used and deep well for more than 25'. how far can a jet pump (deep and shallow) pushed water? for centrifugal pump, how depth can it...

where could i find Pump Performance Curve Chart? thanks

For HP=GPMxHead/(40%xEff.). i just want to clarify if the GPM indicated here is the desired water outflow(in GPM) at the faucets??

where can i find this pump flow chart/pump curve chart in the internet? thanks

i have read an article of gould.com regarding pump selection. there were three criterias stated in that article 1.) Capacity Needed - How big must the pump be? 2.) Well Condition - Deep Well or Shallow Well? 3.) Discharge Condition - How much pressure is needed. Granting these 3 conditions are...

i am connected to the city water main. i made an inquiry with the city water district on what pressure is available at their water main. they told me that during peak hours its only about 10psi and off-peak it could reach to 30psi. so obviously the 10psi pressure during peak hours its not...

Thanks. yes we are connected to the city water main. i dont have regulator valve. if i opt to use storage tank and booster pump. i want to know what would be the criteria or things to consider in sizing the storage tank? would it be the total demand at the house? i also wanna know how to...

During the demand peak hours (morning) at my place, the flow rate and pressure of the fixtures are very low and it causes us inconvenience during these hours but then during nightime wherein only few uses water the flow rate and pressure are okay. the distance of the farthest fixture is about...

lets take this as an example. water level below the ground is 3m depth (Suction head is 3m) then i want to deliver the water to the water tank located at roof deck of 5 storey building (assuming Height of the building is 15m). i wanna know how to compute the required power the pump to lift the...

yep. you're right there. what i want to know is the required horsepower of the pump for a given height of water level up to the level of pump then up to the elevated water tank (downfeed system). and what kind of pump should be used centrifugal or jet jump? thanks. i also want to know how to get...

what is the formula in designing a water pump for residential building? water pumped from a certain water level up to the elevated water tank? what is also the formula in designing pressure tanks? what reference book would you recommend where design of water system is residential building where...