By Hayward Pool Products



Model # W3S270T

Warranty 1 Year

Alternate Part #'s HAYW3S270T

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

Click here for more Hayward Filters

Product Specifications

Filter Model:
Plumbing Size:
1 1/2 in.
350 lbs.
Flow Rating:
74 GPM
Filtration Area:
3.70 sq. ft.
Valve Location:
Valve Type:
Multiport Valve:
Turnover 8 Hrs.:
35000 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 1/10/2015by Inyo Visitor

Does the filter come with sand? Should I buy regular sand?

A  Answered on 1/12/2015 by InyoPools Product Specialist Robert M.

The filter does not come with sand. You can use a synthetic sand or a No. 20 silica sand.

?     Asked on 5/28/2015by Inyo Visitor

How much sand does the 27 inch filter require?

A  Answered on 5/28/2015 by InyoPools Product Specialist Lennox H.

The Hayward 270T Sand Filter requires 350lbs of 20 grade Silica Sand or 175lbs of Zeo Sand.

?     Asked on 6/3/2015by Inyo Visitor

How do I determine what size sand filter I need for my 24,000 gal inground pool?

A  Answered on 6/3/2015 by InyoPools Product Specialist Dennis R.

The pool filter has to be compatible with the size of your motor. If it is too small, the pump will try to push more water through the filter than it can handle. We also recommend buying a filter one size larger than required for a buffer. Also the larger filter will last longer and require less backwashing. If you have a 1.5 HP pump we would recommend a S310T filter. If 2.0 HP, a S360T.


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