By Hayward Pool Products



Part # S210S

Warranty 1 Year

Manufacturer Code W3S210S

Alternate Part #'s HAY-05-186, HAYS210S

Product Description

Hayward Pro Series high-rate sand filters are the very latest in pool filter technology. Molded of durable, corrosion-proof polymeric material, Hayward Pro Series filters feature an advanced, self-cleaning lateral underdrain system for smooth, efficient flow and totally balanced backwashing. For crystal clear water with only minimal care, pool professionals choose Pro Series.


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


  • Durable, flanged inspection cover provides convenient access to top of filter
  • Top diffuser ensures even distribution of water over the top of the sand media bed. All internal piping is 2" to give smooth, free-flowing performance
  • Automatic air relief purges any trapped air during operation of the filter system
  • Unitized, corrosion-proof, filter tank molded of rugged, colorfast polymeric material 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

 Click here for more Hayward Filters

Product Specifications

Plumbing Size:
1 1/2 in.
200 lbs.
Flow Rating:
44 GPM
Filtration Area:
2.20 sq. ft.
Valve Location:
Valve Type:
Filter Type:
Pool Type:
In Ground

?     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 8/27/2015by Inyo Visitor

I need to find the side mount valve model number to replace this part for this sand filter. Do you know this model or part number ?

A  Answered on 8/27/2015 by InyoPools Product Specialist Robert M.

The side mount multiport valve for this sand filter is part number SP0710X62.

?     Asked on 5/13/2018by Inyo Visitor

I currently have a hayward s240 sand filter on a 38x18 pool. Wood the s210 be sufficient or compatible since I have not been able to find a s240.

A  Answered on 5/14/2018 by InyoPools Product Specialist Alex V.

Hello, The S240 has been replaced with the S244T os S244S. I would not recommend decreasing the filter size. If you do, you would have to backwash more often since you would be going with a smaller filter. 


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