Results 1 to 20 of 112
Thread: hole diameter and amounts
-
29-05-2020, 02:21 PM #1
hole diameter and amounts
I'm going to fit a bit of 3" pressure into the outlet of a slide valve on the return from an Eazy Pod and then I'm going to fit a filter sock over it.
What I am going to do is drill holes in the pipe to allow the water to flow out along the length of the filter sock so I get a more even spread of water going through the sock.
I was going to try to use something like 10mm holes or maybe a bit bigger to make the equivalent area of the 3" pipe but spread over the length of the pipe.
This was my way of thinking -
If the area of a 3" diameter circle is 4415mm squared give or take a fraction of a mm squared then if I was to use 10mm holes which gives me 78.5mm squared per hole I would need 56 holes well 56.24 holes to be precise but I don't fancy trying to drill 0.24 of a hole so I'll just stick with 56 holes.
If I go for 2 rows of holes that makes 28 holes per row.
3 rows makes just over 18 holes per row.
4 rows makes 14 holes per row.
5 rows makes just over 11 holes per row.
Obviously going for 12mm, 15mm or bigger will give me less holes but more water and muck will go down through the nearest holes and not spread too far along the pipe.
It's basically going to be a spray bar but with an open end just in case some holes start to block which will then force the water further down the pipe before it starts to come out of the holes.
Any suggestions on holes sizings or numbers of rows for the best results would be appreciated.
Thanks in advance.
BTW it's a good job we are in lock down still or I wouldn't have enough time for all these extra filter system modifications LOL
-
Goonerharwood Thanked / Liked this Post
-
29-05-2020, 02:25 PM #2
Just realised my deliberate mistake, the maximum length of pipe will be something like 400mm so that will dictate the number of holes per row I can have and then the number of rows I need too.
I need to get the size of the smallest filter sock and work from there really.
Fortunately the extra filter socks have just been delivered while I was writing this thread
Looks like it's measuring time soon
-
Goonerharwood Thanked / Liked this Post
-
29-05-2020, 05:56 PM #3
-
29-05-2020, 07:11 PM #4
-
29-05-2020, 07:47 PM #5
There’s not so keep going mate, tho e inspired me to order some myself Lolol
Sent from my iPhone using Tapatalk
-
Goonerharwood, freddyboy Thanked / Liked this Post
-
29-05-2020, 08:11 PM #6
-
Goonerharwood, freddyboy Thanked / Liked this Post
-
29-05-2020, 08:58 PM #7
-
freddyboy Thanked / Liked this Post
-
30-05-2020, 10:30 AM #8
That's annoying the 4" filter socks that turned up yesterday won't even go over a bit of 3" pressure pipe and even a 3" waste pipe doesn't look promising either.
Looks like a rethink is required. Going to stick with 3" though
-
freddyboy Thanked / Liked this Post
-
30-05-2020, 12:43 PM #9
My bakki has 5 rows of 8mm holes about 3cm apart in a three inch manifold.
i think if you want an even flow you will need an end cap.
so maybe a couple of bigger holes in the top as an overflow.
if you start with a bigger gap between the holes you will have the option of putting another hole between those if you want more flow.
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
30-05-2020, 12:45 PM #10
I though you were going to tell him to put a sock in it, with all these threads mr big
-
-
30-05-2020, 12:49 PM #11
-
30-05-2020, 12:59 PM #12
OK thanks, as you have a drum in front of your bakki shower you will have less muck getting to it so you can get away with smaller holes. Aa I've only got an Eazy Pod in front of mine I may need to go for slightly bigger holes? But if I mark out for 8mm holes and get enough spacing between them then I could always go up to 10mm or even 12mm either in various places or all the holes, couldn't I?
Start small and go bigger if required.
I don't need extra holes for an overflow as I have already built an overflow / bypass system into the pipework
-
30-05-2020, 01:58 PM #13
Think I would still go to the smaller holes as the water will run out before getting to the end of the pipe, with will reduce the spread through your sock.
there won’t be anything that big coming through the filter should have trapped it.
if you come out of the filter put a T in and have the drilled out pipe vertical you could fill it with media as a trickle pipe, with the sock on the out side the same way
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
30-05-2020, 02:14 PM #14
-
30-05-2020, 02:17 PM #15
It could be under the water wouldn’t make much difference lol
-
Frimley Koi keeper Thanked / Liked this Post
-
30-05-2020, 02:36 PM #16
-
freddyboy Thanked / Liked this Post
-
30-05-2020, 06:55 PM #17
-
freddyboy Thanked / Liked this Post
-
31-05-2020, 08:50 AM #184600 Gallon Concrete Block and Fiberglass
2100 mm x 710 mm Infinity Window 32mm thick glass
2 x Aerated Bottom Drains and Skimmer
Filtreau HiFlow 30 Drum Filter
Bio Chamber - 140 litres K1
Bakki Shower - 30 KG Sakura Far Infrared Media
2 x 18,000 lh pumps
Heated from house boiler through a heat exchanger
Idealseal MS290
My Pond Build
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
31-05-2020, 09:34 AM #19
-
RoyLittle0, freddyboy Thanked / Liked this Post
-
31-05-2020, 12:05 PM #204600 Gallon Concrete Block and Fiberglass
2100 mm x 710 mm Infinity Window 32mm thick glass
2 x Aerated Bottom Drains and Skimmer
Filtreau HiFlow 30 Drum Filter
Bio Chamber - 140 litres K1
Bakki Shower - 30 KG Sakura Far Infrared Media
2 x 18,000 lh pumps
Heated from house boiler through a heat exchanger
Idealseal MS290
My Pond Build
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
Running heater at low temp?
Covering the pond with polycarb should be enough to stop water temps dipping below 6C for the most...