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#1 | ||
*Honker*
Join Date: Jan 2022
Posts: 985
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I am considering buying some kind of car washing backpack jet stream thing from the internet, it plugs into the tap or what not and is a pressure washing thingo.
My tap outside has a weak flow, as if the tap was only turned a quarter of the way. Would that work with a pressure washer? I hear it uses less water than a normal hose, so... |
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#2 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,989
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Is it on Temu?
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#3 | ||
FF.Com.Au Hardcore
Join Date: Feb 2008
Location: Perth, Northern Suburbs
Posts: 4,934
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I don't know about backpacks, mine have always just had wheels.
Also not sure about using "less water"? The beam is concentrated, but it's very high pressure. Certainly I have discovered that if the flow is obstructed, eg the hose gets caught, the washer will "starve" and splutter. These washers normally specify a pressure, and obviously the more expensive models can generate more pressure. So a smaller, lower pressure, unit, would require less water.
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#4 | ||
FF.Com.Au Hardcore
Join Date: Apr 2012
Location: Taromeo
Posts: 10,483
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I'm on tank water and my pump is nowhere near the level of town water for pressure. My pressure washer works fine.
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#6 | |||
Donating Member
![]() Join Date: May 2008
Posts: 12,270
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Quote:
![]() ![]() From a normal town water supply by the way. I did need a 15-amp plug though.
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#7 | ||
FF.Com.Au Hardcore
Join Date: Feb 2005
Location: In Front of a Monitor
Posts: 1,646
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Some brands do.
Running one from a bucket would be the lowest pressure possible. You still need a little gravity to get it to work hence putting the bucket higher than the pressure washer. ![]()
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#8 | ||
FF.Com.Au Hardcore
Join Date: Oct 2016
Posts: 733
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hi
Normal house mains pressure is 35-45 psi. Commercial upwards 65psi Water flow is around 40ltr per minute for domestic house flow is measured by how many litres in a 15 second duration . Then x 4 =Litres per minute. For a pressure cleaner keep the supply hose [typical 1/2 inch ] short as possible Most important use an inline water disc filter in the supply hose . The grit and occasional small pebble will damage the pressure cleaner . Warranty is also void if debris /damage is found internally . |
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#9 | ||
FF.Com.Au Hardcore
Join Date: Apr 2005
Location: Canberra
Posts: 13,393
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I have a cheap Karcher K2 from Bunnings years ago and always on tap water and just spent a couple of hours cleaning up mums pavers with shit flying everywhere
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#10 | ||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,869
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Smaller country towns around here tend to have a lower town water pressure supply.
(if they are on town water at all) Certainly more than the average person needs but I bought a used (Aussie pumps) petrol powered unit simply because it could boost the pressure up to 3800psi but is quite suitable for the purpose of washing the top and underside of my trucks along with long stored granite.
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#11 | |||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,989
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Quote:
Thread reminds me of a mate troubleshooting his home installed EFI conversion fuel system. “I’ve got pressure, but no flow”. I suggested this was the Bachelor’s Lament. |
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#12 | ||
*Honker*
Join Date: Jan 2022
Posts: 985
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#13 | ||
*Honker*
Join Date: Jan 2022
Posts: 985
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I will give it a go.
Thanks for that. |
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#14 | ||
Regular Member
Join Date: Aug 2008
Posts: 2,892
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Further to what CB alluded to in his earlier post, make sure you buy a pressure washer like one of these types:
![]() If you buy one like these below, you will be disappointed: ![]() I’ve seen ads recently that claim all sorts of great things about these hose nozzles that cost about $49, and one of them was called a “jet washer” or something like that.
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#15 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,097
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Quote:
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#16 | |||
HSV - I just ate one!
Join Date: Dec 2004
Location: Middle of nowhere
Posts: 3,129
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the average, hand portable size pressure washer should be fine with whatever you're getting from your tap.
once you get into bigger, commercial/pro grade stuff, then you need to worry about flow. Quote:
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#17 | |||
Donating Member
![]() Join Date: May 2008
Posts: 12,270
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Quote:
![]() In any case, my point being, if a commercial-grade machine can draw enough water from a normal town water supplied outlet, a crappy entry level machine won't have an issue. End of thread!
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#18 | ||
Regular Member
Join Date: Jan 2006
Location: bright
Posts: 378
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My old karcher hot water washer outflows my gravity feed tap.
Was fine when on tank water, tank was high up a hill, but now gravity fed by a lower dam,no good. Problem is it has its own reservoir (5L) with a float valve in it. It will empty out the reservoir before the gravity feed tap can refill it. Just dawned on me while reading this, i might just bypass reservoir and plumb straight into tap so it can suck from supply. Piston type pump like in pressure washer should do that easy enough. |
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