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Old 10-06-2018, 05:34 PM   #1
R32 mad
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Minimum Flow Rate For Pressure Washers?

Hi all, what is the ideal flow rate for a pressure washer? My garden tap has a flow rate of 14 liters per min, but this is reduced when I attach a 15 meter long garden hose and it's down to 10.9 liters per minute.

Would this flow rate suffice for a Kranzle K1152 pressure washer?
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Old 10-06-2018, 05:38 PM   #2
wish wash
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10 litres would be the minimum you want.
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Old 10-06-2018, 05:45 PM   #3
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To maximize the flow make sure that you don't have any waterstop couplings in the line as the pressure drop across them is quite high. Other than that what about getting a larger bore hose?
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Old 10-06-2018, 06:11 PM   #4
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My garden tap is fitted with a garden tap kit, would it improve getting a plumber to install a copper pipe?
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Old 10-06-2018, 06:18 PM   #5
wish wash
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Is your tap one of those that screws around the copper pipe?
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Old 10-06-2018, 06:19 PM   #6
R32 mad
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Quote:
Originally Posted by wish wash View Post
Is your tap one of those that screws around the copper pipe?
Yes it is, I assume the hole that's cut into it is smaller?
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Old 10-06-2018, 06:31 PM   #7
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The quick fit garden tap kits only punch a small hole in the wall of the 15mm copper pipe.

If you get a tap fitted , ensure that any isolation valve that is fitted is the 'Full Bore' type, they are only a few pound more and don'limit the flow.


Also if you get a plumber think about a hot tap, logistics allowing.
Wayne

Last edited by wlmoate; 10-06-2018 at 06:36 PM.
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Old 10-06-2018, 07:14 PM   #8
wish wash
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Quote:
Originally Posted by R32 mad View Post
Yes it is, I assume the hole that's cut into it is smaller?
Yes maybe 10mm. I've took a few off and I find them pretty poor. I've seen the main copper pipe crushed too much. When it self cuts into the copper I've seen the end still in place so it's acting like a cat flap.

You will notice a difference with it being plumbed in. It's not a hard job. A decent plumber will solder it up, a lazy one will use speed fit / push fit
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Old 11-06-2018, 08:04 AM   #9
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Quote:
Originally Posted by R32 mad View Post
My garden tap is fitted with a garden tap kit, would it improve getting a plumber to install a copper pipe?
Hi Mad

Yes it should show a vast improvement, I was only getting 9 litres out of my garden tap kit connection, not enough for my E150 I got a tee connection for the washing machine feed and now get 17 litres at the end of the hose see attached and I only get 18 litres direct out of the kitchen tap.

https://www.amazon.co.uk/IGNPION-Man...y+tap+manifold

Last edited by BruceVolvo; 11-06-2018 at 08:07 AM.
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Old 11-06-2018, 11:58 AM   #10
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Garage
When we redid our kitchen one of the things I wanted was to add hot and cold exterior taps. I actually did the job myself which was a good learning experience and actually not as difficult as I thought it'd be. I cheated slightly using solder-ring fittings but I've got solid, clean joints and what I consider to be a tidy pipe layout. I also used full bore pegler shut-offs.

I now have full hot and cold taps for the car and other purposes. I'm also lucky that we have really good water where we are so my outside cold tap gives me ~23l/min, 4 bar static pressure, 2.5 dynamic and a PPM of 50.
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