Question about Hayward Pro Series 18" Above Ground Pool Sand Filter System with Pump

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Pool Sand Filter

I have a 20" in diameter 7 position multi port valve sand filter that has a crack around the top. My pool is a 24' round above ground. I have a 1 1/2 HP motor. A friend has a sand filter from an 18' foot pool that she will sell me. I know there is a big difference in the amount of water for these 2 size pools. Would this work without putting strain on my new motor or other equipment?

Thanks!

js1moreday

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  • js1moreday Apr 16, 2009

    Thanks for the advice. I was afraid of that. The sand filter itself is cracked around the top and it seems to be going further around. The filter is all one piece so there is nothing that can be replaced there. The multi port valve was replaced last year so I guess it's time for the filter.



    Thanks for your help.

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The volume of a 24x4 pool is 1809.6 cubic feet [Volume=pi x radius squared x height, or V=3.14159 x(12x12)x4], and the 18 foot pool is 1017.9 cubic feet [V=3.14159 x (9x9)x4]. When you multiply the number of cubic feet by the conversion factor of 7.48 gallons per cubic foot, you come out with 13,536 gallons versus 7614 gallons. Since the volume is nearly double, I don't think the other filter will cut it for very long. Is the top that is cracked in the valve body or the top part of the tank? It might be cheaper and easier to just replace the defective part in the long run than to use an undersized filter that will die prematurely.

Posted on Apr 16, 2009

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2 Answers

Our pool is about 90000 litres of water so how big filter do we need please


If you have a above ground pool go with the Cartridge or sand, and if underground go sand or D.E. All have their ups and down you should find out what you want from them specifically cause they all do varying amounts of the same thing.

Sand Filters
(Filters using literally sand)
For sand filters, on inground pools, I like to use a 30 inch tank diameter, which is a 4.9 sq. ft. filter surface area, and holds 600 lbs of sand. For small pools (under 20,000 gals), I might advise the next size down (24 inch tank), if the budget is tight. But never go smaller than a this for an inground pool.
Cartridge Filters (like a air filter)
I have a rule of thumb for cartridge pool filters. 100 sq. ft. of filter surface area per 10,000 gals of pool water, as a minimum. I like to see the 400 sq. ft. models on inground pools above 25,000 gals. These can go an entire season without cleaning in most cases.
D.E. Filters (Ground up fossilized algae)
Because they offer the most superior type of filtration, people tend to go small with DE, and buy a 24 or 36 sq. ft. DE filter. Ugh - go Big! Nothing below a 48 sq. ft. filter, and if your pool is over 25,000 gals, go with the Big Boy - the 60 sq. ft. filter.

Swimming Pool Blog


Also make sure the filter can take the amount of water that the pump is pushing through it.

Jul 23, 2015 | Pool & Spa

2 Answers

Hayward sand filter allowing dirty water to come through


1) Make sure that you have thoroughly backwashed the sand.
2) Make sure your chemical balances are correct
3) Remove filter canister top valve and insure that it was properly seated on the filters canisters center pipe.
4) Remove all sand from the filter canister
4) Clean all components thoroughly
5) Check for cracked laterals or plumbing
6) Repair or replace any bad or missing components
7) Reassemble

Tip: carefully use a rubber mallet to seat the canister valve by lightly tapping on and about the circumference of the valves seat.

Hope this helps,
https://www.oskopoolnspa.com

Jul 09, 2015 | Hayward SAND FILTER, PRO SERIES

1 Answer

Trying to put pump system together. Do we remove the drain screen before adding sand?


Our terminology is not coinciding...
Follow these steps...
  • 1st - understand that a pump moves water thru your system.
  • A filter cleans your water
Sand does not go into a pump.
sand goes into the filter.
  • when adding sand into filter tank, top valve is not in place, you Need to first add water, to cover the laterals at bottom
  • Then PLACE a cap or something/anything, over the stand pipe, so NO sand goes into that pipe! IMPORTANT! Begin to add sand.
    • Do this slowly, being very careful to NOT disturb position of stand pipe! Do NOT Lift it or allow it to rise up! Keep it centered!!
  • Add required amount of sand
  • Remove stand pipe cover/cap that placed
  • Install valve onto tank
  • Complete plumbing in-out of the valve
    • Presuming you have the plumbing complete from and to pool?
    • Pool suction port to front of pump. Out of pump into 'Pump' port of filter valve
    • Out of 'Return' port to pool
GOOD LUCK

May 31, 2015 | Waterway Pool & Spa

1 Answer

Filter sand in pool


Greetings,
I am all in as well with the previous assistants (A. Miller) remedy to your problem.
Broken Laterals at the bottom of the filter.
There is no other way sand will enter the pool, bypassing the equipment, unless there is some kind of compromised equipment. As mentioned by A. Miller, the laterals are located at the bottom of the filter, normally about 9 of them approximately 6" long and about 1" in diameter. There are very thin cuts or kerfs in them that are smaller than a grain of #20 Silica Sand. Therefore only water (in theory - clean filtered water) will enter them after being pushed by pressure through the bed of sand to the bottom and entering the collection manifold via the lateral drain assembly.
As A. Miller mentioned, if only one lateral is broken, cracked or compromised, the pressure that is in that filter tank will definitely find that compromise and will "Push" sand right into that lateral, thru the rest of the system and into the pool terminating out the return lines and will collect normally immediately under the return lines. Normally more heavier at the nearest return line to the equipment area.

Although - Another possibility is, if the tank had more sand than required, when you "Backwash" sand could enter into a Multi-port valve (if you have one) and will enter into the return port, and when you turn the valve back to "Filter", you will see sand enter the pool.

Or, another reason could be inclusive of the problem above PLUS a deteriorated filter valve gasket, commonly referred to as a "Spider Gasket". The ports are supposed to be individually sealed and not allow water/debris/sand to pass between these ports, and this gasket keeps them individually compartmentalized.
But a compromised gasket seal could at times create a situation that may lead one to believe that a broken lateral is the culprit.

Removing sand is a chore! Taking the top cover off of the MultiPort valve is easier and a gasket relatively inexpensive.
But if your laterals are compromised, break out the ole shop vac and find that problem.
Good Luck

Apr 13, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

Hayward 220T pool filter is leaking water; could it be the multi-port valve needs to be replaced?


if coming out of top where handle is yes if out backwash line yes make sure unions are tight also

Dec 30, 2013 | Hayward SAND FILTER, PRO SERIES

1 Answer

When vacuuming pool dirty water is being sent back into pool. filter is one year old


Are you sending thw water to waste or ar you filtering it? If you are filtering it through a multi port valve, the spider gasket could be faulty. Proper way to vacuum is through the filter then back wash the filter after cleaning the pool.

I suggest you take the top from your filter and inspect the sand, it should be solid over the top. Have you tracked the pressures over the past year? When was the last back wash? You should back wash only when the pressure goes up 20 PSIG from start (when the filter is clean and free of debris.)

Tell me more please. . . .

Jun 13, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Hey i find when im vacuming the dirt i pick up from the bottom of the pool just goes threw the filter and back into the pool, what should i do?


The multi-port valve should be in the WASTE position when vacuuming. Make sure there is enough water in the pool to stay above the skimmer when vacuuming .

Jun 06, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Trying to open pool for my first time....not sure what to turn valves to so water will run into the filter from pool


red valve handles align with flow of water long ways the tail in direction of pipe valves open to open pool generally all Valves open Main drain (floor of pool). Skimmer square hole somewhere on side edge of pool... There could be a third Valve for a seperate Vacuming port (like mine) it can be either its below water line .. On the Round Sand filter theres a Multi port Valve I usually start the Filter in RECIRC mode .. While I net and gather debris then I add floculant leave on recirc two hours . Then Shut ALL down for 12 Hrs while all the algae and debris sinks to bottom . Water will be reasonably clear.. Make sure pools Extra full , And Vacum all on bottom on waste setting

Jun 04, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Sand from filter in pool


Have you vacuumed the sand out of the pool and it has continued to happen? If so, I think it is probably going to be an issue with your pool filters multi-port valve. Check the valve and if any part of it is damaged, it should be replaced. This will be a much cheaper solution than replacing the entire filter. It could also possibly be a broken lateral on the inside of the filter that is letting the sand into your pool water.

May 13, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Sand is in pool after backwash


A little sand is normal, called a puff back. Anything more then a good pinch of sand is a problem If its a lot of sand you can check the following.
1. O-ring in side the filter valve when standpipe inserts is intact. Make sure that standpipe is not cracked and seats well into valve.
2. check spyder gasket inside filter head. (looks like a wagon wheel) if it is loose or is pulling up it will need to replaced or re-siliconed. A good indication of this being the problem is if water is leaking from backwash port.
3. Check hoses to make sure that the to pool, to pump conections have not been reversed, if this was case you would get a lotta sand into pool. (can empty tank)

Jul 04, 2009 | Hayward Pro Series 18" Above Ground Pool...

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