By Hayward Pool Products



Model # W3S270T2

Warranty 1 Year

Alternate Part #'s HAYW3S270T2

Product Description

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 

Click here for more Hayward Filters

Product Specifications

Filter Model:
Plumbing Size:
2 in.
350 lbs.
Flow Rating:
74 GPM
Filtration Area:
3.70 sq. ft.
Valve Location:
Valve Type:
Multiport Valve:
Turnover 8 Hrs.:
35520 gal.
Turnover 10 Hrs.:
44400 gal.
43 in.
27 in.
Sand Required:
350 lbs.

?     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 8/10/2015by Inyo Visitor

What are the waste and closed settings used for?

A  Answered on 8/10/2015 by InyoPools Product Specialist Robert M.

The waste position can be used to drain water from the pool while bypassing the filter. The closed position is used when/if the pool is closed for the winter.

?     Asked on 7/31/2016by Mike

I have a 1HP Hayward superpump. Average 25 ft of head on return piping. Is a sand filter with a flow rating of 74 GPM large enough that i won't have problems with the pump being too powerful for the filter?

A  Answered on 8/4/2016 by InyoPools Product Specialist Lennox H.

Hi Mike, Based on the info provided the S70T2 filter will be adequate, the Hayward Super Pump 1 HP will not be too powerful.

?     Asked on 6/5/2017by Cheryl

I need to see a picture of the top of the valve to see if it will work with my current plumbing. My old valve has backwash on the right, return on the back and the pump intake in the front.

A  Answered on 6/11/2017 by InyoPools Product Specialist Patrick P.

Here is an Image of The Valve that Comes with This Filter.


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