By Hayward Pool Products



Part # W3S210T

Product Description

Inyo Recommended Filters


Hayward sand filters are the very latest in pool filter technology. Molded of durable, corrosion-proof polymeric material, they feature attractive, unitized tank construction for years of trouble-free operation with only minimal care. Pro Series sets a new standard for performance, value and dependability. 


  • In-ground pools of all types and sizes
  • In-ground spas--(residential or commercial)
  • Water features--(fish ponds, fountains, water gardens)


  • Flange clamp design allows 360 degree rotation of valve to simplify plumbing
  • Integral top diffuser ensures even distribution of water over the top of the sand media bed. Full-size internal piping provides smooth, free-flowing performance
  • Unitized, corrosion-proof filter tank molded of rugged, colorfast polymeric material for dependable, all-weather performance
  • 6-position Hayward Vari-Flo control valve with easy-to-use lever-action handle lets you dial any of the 6 valve/filter functions. Integral sight glass lets you see when backwash cycle is completed
  • Efficient, multi-lateral underdrain assembly, with 360 degree slotted, self-cleaning laterals, gives totally balanced flow and backwashing
  • Integral molded drain plug for easy draining of tank, without the loss of sand 

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Product Specifications

Plumbing Size:
1-1/2 in.
Sand Required:
200 lbs.
Flow Rating:
44 GPM
Filtration Area:
2.20 sq. ft.
Valve Location:
Valve Type:
Turnover 8 Hrs.:
21,120 gal.
Turnover 10 Hrs.:
26,400 gal.
20-1/2 in.
38 in.

?     Asked on 1/27/2012by Guest

When should I change the sand in my filter?

A  Answered on 1/27/2012 by InyoPools Product Specialist Patrick P.

You should change the sand in your filter every 5-7 years. You can generally tell that it is time if your pool water is not as clear as it normally is or when you notice the interval between backwashes is shorter. You can use > this guide to walk you through it.

?     Asked on 3/1/2012by Guest

How often do I have to replace the sand in my filter? What is normal operating pressure?

A  Answered on 3/1/2012 by InyoPools Product Specialist Patrick P.

On a "fresh start-up" a filter would operate anywhere between 10-20 psi. As a general rule of thumb you only want to backwash when the pressure increases 8-10 psi. You want to make certain that the pump is being turned off whenever you move the handle on the valve. Once backwashing is complete (3-5 minutes), you can switch to the rinse option to re-settle the sand bed. Sand will typically last 5-7 years. Premature backwashing will wear down the size of the sand which will cause difficulties such as cloudy water and higher operating pressures.

?     Asked on 1/21/2013by Guest

I just replaced the sand in my filter. When I turned the pump on, a lot of sand shot back into the pool but there is little to no suction. What do I do?

A  Answered on 1/21/2013 by InyoPools Product Specialist Patrick P.

If you are getting sand back into the pool, that would be an indication that the laterals would need to be replaced. If I am understanding correctly, you lost suction after the sand was replaced. If so, you may want to check the line between the skimmers and the pump. The skimmer closest to the pump and filter should give you the strongest suction. You can also try blocking on of the skimmers to see if this helps.

?     Asked on 10/3/2014by Guest

My valve needs to be replaced. Is the part SP0714T correct?

A  Answered on 10/3/2014 by InyoPools Product Specialist Patrick P.

The SP0714T would be the correct valve for the S210T.

?     Asked on 7/19/2015by James

We purchased our house a couple of months ago, it came with an 11,000 gallon above ground pool with a Hayward Pro Series High rate sand filter. (s210T ). Everything was working fine up until a couple of weeks ago. Now when I vacuum the pool I can see the dirt and green algae being blown back in after a couple of minutes. I have it on the filter setting like it is supposed to be and I have backwashed and rinsed but it is still shooting everything back in the pool. Please help.

A  Answered on 7/19/2015 by InyoPools Product Specialist Hector F.

If there is too much algae or dirt in the pool then older sand may not efficiently filter these organics and such out. Its wisest to vacuum this debris directly out of the pool keepng the multiport in the waste position then using the filter to grab the rest of the impurities. Also make sure that the pool has enough water when performing this task. Lastly please be advised that sand should be changed anywhere between 5-10 years.


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