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Pump to generate vertical stream of water from nozzle.

Pump to generate vertical stream of water from nozzle.

Pump to generate vertical stream of water from nozzle.

(OP)
Hello, I need to build a pump/pipe system to generate a 6m high stream of 50C water from a 6.4mm nozzle. Hoping to use one of the gas powered pumps from Harbor Freight but want to make sure it can do the job before purchasing.

I've been working through basic bernoulli calcs but I'm definitely missing something and really need some help.

The specs on the pump I'm looking at are given as 35gpm, 1in outlet, 65ft Maximum Head Lift and 19ft Intake Head lift.

The current idea is to connect a garden hose to the pump and then do the final nozzle reduction at the end of the hose. I understand there are a lot of losses in the system but I'm not looking to hit an exact number, just see if the pump will work and likely if I can't reduce throttle/output I'll bleed off some of the output. Can anyone walk me through the process to verify the pump performance in terms of the desired output?

Thanks for your time.

RE: Pump to generate vertical stream of water from nozzle.

Forget Bernoulli, useless at real life calcualtions.

If you're trying to create a fountain for some reason ( in other words zero velocity at 6m from your nozzle), I reckon your 6.4mm ( aka 1/4") nozzle needs a velocity of about 12 m/sec allowing a bit of aerodynamic losses. That equates to about 6 US GPM, so your pump look Way too big.

How much pressure?

You need to work out the losses, but there will be a fair bit across a small nozzle.

The 19ft I assume is lift height to pump out something - you don't need this.

Just find the differential head and add the inlet head.

Only when you know all the inputs can you determine if your pump is man enough or not.

What is this thing? a 6.4mm jet is going to be quite hard to keep as single column of water and not spread out over 6m.
I'm sure you can just go and buy a fountain that gives you a jet 6m high???

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Pump to generate vertical stream of water from nozzle.

Based on this chart, you would need a 10 mm nozzle to obtain a height of 6 meters:

Smooth Bore Fountain Nozzle

The pump head required is 9 meters (29.5 ft.) with a flow of 57.1 l/min (15 gal/min.). To that head, I would add 10 feet for miscellaneous pipe losses.

Your pump is too large and your hose is too small. Size the pump based on the fountain nozzle performance specifications. Use at least a 1-Inch diameter pipe, which will probably be adequate unless the pipe run is very long.

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