Using poly (pressure) pipe on Air Compressor

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Originally Posted by blitz

Amongst other things I teach soldering copper pipe for a living, I am a Refrigeration Trade Trainer and yes I have all the gear you need and i am happy to help you and teach you how to solder if you want as well.

i dont have the pipe but i can come and have a look at what you want and work out what you need to do it for you.

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What an offer! I'd love to learn how to solder copper properly. Thanks :D

I can get the copper pipe from the local Mitre 10 + a bunch of fittings.

I'll send you a PM with my phone details etc. and we can have a chat if you like.

Cheers
David

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Originally Posted by spudboy

What an offer! I'd love to learn how to solder copper properly. Thanks :D

I can get the copper pipe from the local Mitre 10 + a bunch of fittings.

I'll send you a PM with my phone details etc. and we can have a chat if you like.

Cheers
David

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Price it first, then try Scott's Plumbing shop at Klemzig. The hardware shop may give you 10% off retail, I always got better from Scott's. Copper is expensive these days.

Rileyen - A pump's specs will have a "head" figure, which is the theoretical vertical distance the pump will push water.

The pump will have a "head" curve which flattens out at the top, and this is the highest distance it will pump water. i.e. the flow rate at (say) 40 m height head will be less than the flow rate at 10m height head.

Does that make any sense?

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Originally Posted by Rileyen

A pump is said to be capable of pumping water up to 100 meters, but I don't want to confirm that by actually putting up a very long pipe to that height. I know that pressure is related to height, so putting pressure at the output end of the pump would simulate different heights. Any suggestions how I can rig a contraption to do this? Thanks.

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10 metres or 33 feet head of water equals one atmosphere (100kPa) or 14.7 psi approx. So I would tee a pressure gauge and valve to the outlet. Screw down the valve to read the pressure at your chosen delivery rate, you would be looking for 147psi maximum or thereabouts.

If you want to use copper, go to tradelink for a quote. They're the ones who sell it to all the other retailers, so you should be able to save a little bit, if you nab the right guy.

Quote:

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Originally Posted by Rileyen

A pump is said to be capable of pumping water up to 100 meters, but I don't want to confirm that by actually putting up a very long pipe to that height. I know that pressure is related to height, so putting pressure at the output end of the pump would simulate different heights. Any suggestions how I can rig a contraption to do this? Thanks.

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Simple.

Attach a tap/valve to one side of a 3/4" Tee peice

Attach a pressure guage to another side of the tee peice

Connect 3ft or so of pressure capable hose to the tee peice. (not clear food/beverage hose - must be reinforced hose)

Connect the other end of the hose to the pump outlet.

Start the pump with the tap/valve open.

Pump is now delivering water, and the pressure guage shows a reading.

Slowly close the tap/valve until no water flows. The pressure the guage now shows is the pumps "shut-head".


If that is a PSI figure, multiply by 2.31ft

(10psi = 23.1ft)

If it's a kPa figure, divide by 10 and your result is expressed in M

(70kPa / 10M = 7M ... or 23ft)

To fill a tank 23ft/7M in the air, your pump needs to make 10psi just to get the water to the top of the tank (static). ... 10psi=23ft=7M head.

Using this device you can check the pumps shut-head, and output at differing heads or flow rates ... how many volumetric units, per measure of time, at what discharge pressure/head ...

Cheers