Pump sizing
Pump sizing
(OP)
Hello,
I'm currently sizing a centrifugal pump to pump
demineralized water from a 300,000 gallon tank to trucks for electrical utility overhead line cleaning. The pump i'm currently considering indicates Maximum Working Pressure of 150psi, but existing piping system to which I intend attaching pump is class 150.
Can someone tell me what codes to look at for this
application in relation to safety factors.
Thanks
I'm currently sizing a centrifugal pump to pump
demineralized water from a 300,000 gallon tank to trucks for electrical utility overhead line cleaning. The pump i'm currently considering indicates Maximum Working Pressure of 150psi, but existing piping system to which I intend attaching pump is class 150.
Can someone tell me what codes to look at for this
application in relation to safety factors.
Thanks





RE: Pump sizing
Find out what design code was used for the existing system and you'll have your answer about how the allowable pressures are determined for that system.
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RE: Pump sizing
Naresuan University
Phitsanulok
Thailand
RE: Pump sizing
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Pump sizing
Naresuan University
Phitsanulok
Thailand
RE: Pump sizing
I have a 40ft high demineralized water storage tank
and to fill a 2500 gallon tanker truck (by gravity) it takes approx. 1hrs. I need to install a pump to fill up the tanker trucks faster. The only point were I can tap into the demineralized water is a recirculation system in which piping is 150# class, the pump discharge line would be connected to the tanker truck via flexible fire hoses.
At this point I have looked at two candidate pumps:
1.- 78gpm @ TDH:65ft
2.- 400gpm @ Max. head of 194ft (100psi)
The 2nd pump would fill up the tanker trucks faster but want to make sure I am within safety factors of the system.
Thanks
RE: Pump sizing
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Pump sizing
It follows then, that you must have a vented tank otherwise pumping cannot take place and therefore there is no problem of pressurising the tank unless you are able close the venting system (not a wise design for a simple water tanker)
The intial question was about pipe ratings which doesn't appear to be a great problem unless you intend shutting off the delivery line at the discharge point and operating the pump against a shut-head.
I don't have figures for the pressure rating of class 150 pipe but should be available from any pipe merchant.
Naresuan University
Phitsanulok
Thailand