| 0.75 Pump with two bag sand filter | |
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Admin Admin
Posts : 2330 Reputation : 46 Join date : 2007-07-25 Age : 62 Location : Cape Town
| Subject: 0.75 Pump with two bag sand filter Tue Jul 15, 2008 3:44 pm | |
| I have to replace my 0.45 pump running with a two bag sand filter. Unfortunately the supplier only have 0.75 pumps available which should be installed with a three bag filter.
Do you think I will run a risk by replacing with the 0.75 filter, without replacing the sand filter with a three bag one. Will it withstand the increased pressure?
Normally the two bag filters states "maximun 0.65 watts" |
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Guest Guest
| Subject: Re: 0.75 Pump with two bag sand filter Tue Jul 15, 2008 6:03 pm | |
| Paul,
with 3-5 mm "sand" no problem! |
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Admin Admin
Posts : 2330 Reputation : 46 Join date : 2007-07-25 Age : 62 Location : Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Wed Jul 16, 2008 10:36 am | |
| Thanks, I bought the .75 and will knock on your door if it does not work. I know a good lawyer ... |
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Guest Guest
| Subject: Re: 0.75 Pump with two bag sand filter Wed Jul 16, 2008 3:09 pm | |
| Don't worry me to Running 1,1kW with 3 bag filter for years |
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Admin Admin
Posts : 2330 Reputation : 46 Join date : 2007-07-25 Age : 62 Location : Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 12:41 pm | |
| The 2bag filter handled the pressure, but I do have a problem with the valve. When it is on filter, I am constantly loosing water through the backwash pipe. I think the pressure of a .75 watt is to high, causing some of the water to escape through the backwash channel.
I had to install another valve on my backwash line over the weekend to prevent loosing the water.
It forced me to do too many water topups(daily), causing too much algae due to the constant addition of nutrients. |
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Guest Guest
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 4:19 pm | |
| Hi Paul, Maak die "multi valve" oop, binne is 'n rubber seel. Die seel moet goed in die geufies pas. Dit gee gewoonlik probleme wanneer dit geskeur is, 'n klippe of vuilgoed verhoed dat dit mooi seel of dit spring uit sy gleuf uit wanneer die "multi valve" gedraai word terwyl die pomp loop. As die seel 100% is en dit lek nog, dan sal jy die "spring" op die "Multi valve" moet vervang, want dan is dit te pap. Weet nie of viagra sal werk nie. |
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Admin Admin
Posts : 2330 Reputation : 46 Join date : 2007-07-25 Age : 62 Location : Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 5:14 pm | |
| Thanks, ek het oopgemaak en gekyk of daar dalk klippes in is, maar dit was skoon. LW dit is 'n nuwe filter. Sal kyk of die veer dalk pap is. |
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wayneb Admin
Posts : 1681 Reputation : 29 Join date : 2007-12-08 Age : 46 Location : Kraai Fontein, Cape Town Metropol
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 8:19 pm | |
| How much more pressure does a .75 give?
Im running a .45 with a 3bag sand filter. Pressure guage sits around 90-100. Not sure if it is bar or psi. |
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Eugen
Posts : 110 Reputation : 0 Join date : 2008-01-29 Age : 51 Location : Parow,Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 9:10 pm | |
| it would be psi 90-100 psi is around 6-7 bar |
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Guest Guest
| Subject: Re: 0.75 Pump with two bag sand filter Mon Oct 06, 2008 10:03 pm | |
| Sover ek kon vasstel, is al die "multi valves" dieselfde ongeag die grote van die sand filter.
Die drukking op die sand filter wand mag verskil, maar die tree ook net inwerking en veroorsaak probleme as die "sand" te "vuil" word en die vingers verstop raak en sodoende die drukking binne in die filter verhoog word. Ek het gevind dat hoe groter die pomp hoe makliker is dit om die "backwash" te doen, 'n groter pomp lig en woel die sand makliker.
Ek het ook al 'n "multi valve" toe vergeet en die pomp aangeskakel, waarna die "multi valve" binne sekondes begin lek en water uit blaas waar dit met die skroewe geheg en verbind word. |
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Admin Admin
Posts : 2330 Reputation : 46 Join date : 2007-07-25 Age : 62 Location : Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Tue Oct 07, 2008 10:13 am | |
| Ek het die veer uitgerek sonder sukses. Ek het toe een van my ander ou multivalves opgesit en dit kan ook nie die drukking hanteer nie.
Die 2 en 3 sak filters het presies dieselfde multivalve, maar die drukking op die multivalve sal uit die aard van die saak groter wees indien 'n .75 pomp hardloop op 'n tweesak filter teenoor op 'n driesak.
My slotsom is dat die .75 dalk net daai bietjie te sterk is vir 'n tweesak filter. Die ekstra enkel valve op die backwash lyn het ten minste die probleem opgelos.
Dankie vir die raad. |
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Jaco
Posts : 700 Reputation : 5 Join date : 2008-02-16 Age : 58 Location : Odendaalsrus Freestate
| Subject: Re: 0.75 Pump with two bag sand filter Wed Oct 08, 2008 1:50 pm | |
| Ek het 'n 1.1kw op 'n twee sak Collins Fibreglass sandfilter. Nog nooit gelek nie. |
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wayneb Admin
Posts : 1681 Reputation : 29 Join date : 2007-12-08 Age : 46 Location : Kraai Fontein, Cape Town Metropol
| Subject: Re: 0.75 Pump with two bag sand filter Wed Oct 08, 2008 3:07 pm | |
| - Jaco wrote:
- Ek het 'n 1.1kw op 'n twee sak Collins Fibreglass sandfilter. Nog nooit gelek nie.
Jong as ek mooi onthou gebruik jy mos 'n skotse pomp, hulle werk mos nie hard soos die afrikaanse tiepes nie. |
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Jaco
Posts : 700 Reputation : 5 Join date : 2008-02-16 Age : 58 Location : Odendaalsrus Freestate
| Subject: Re: 0.75 Pump with two bag sand filter Wed Oct 08, 2008 3:36 pm | |
| Nee Duits lol. Moenie laat die kappie jou flous nie. Die pomp in die foto is 'n .75kw. |
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Wayne Coetzee
Posts : 67 Reputation : 0 Join date : 2008-08-19 Age : 52 Location : Tableview, Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 9:47 am | |
| Hi Jaco, Your set up looks quite interesting, what does the full system look like? Post some more pictures of your pond too. |
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Jaco
Posts : 700 Reputation : 5 Join date : 2008-02-16 Age : 58 Location : Odendaalsrus Freestate
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 9:55 am | |
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Wayne Coetzee
Posts : 67 Reputation : 0 Join date : 2008-08-19 Age : 52 Location : Tableview, Cape Town
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 10:18 am | |
| Hi Jaco, I saw those pics, Absolutely awesome, stunning fish and quality. I aim for that sort of quality one day. How long have you been keeping koi? |
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Jaco
Posts : 700 Reputation : 5 Join date : 2008-02-16 Age : 58 Location : Odendaalsrus Freestate
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 10:24 am | |
| Thanks Wayne, I have been keeping koi since 1999. |
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Colyn
Posts : 413 Reputation : 0 Join date : 2008-04-21 Age : 72 Location : Nelspruit
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 10:25 am | |
| - Jaco wrote:
- Thanks Wayne,
I have been keeping koi since 1999. Hmmm ... ek het nou amper soveel weke as wat jy jare het |
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Jaco
Posts : 700 Reputation : 5 Join date : 2008-02-16 Age : 58 Location : Odendaalsrus Freestate
| Subject: Re: 0.75 Pump with two bag sand filter Thu Oct 09, 2008 10:41 am | |
| Leer nog elke dag iets nuut omtrent koi. Lekker hobby. |
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