Hayward Pro Grid DE Filter 48 Sq Ft w/o Valve - DE4820



Part # DE4820

By Hayward Pool Products

  5 Average  



Part # DE4820

Warranty 1 Year Warranty

Product Description

Hayward Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced thermoplastic, Pro-Grid combines high-technology features and "service-ease" design for an unparalleled filtration value for both new pool and aftermarket installations.

In addition, the Hayward Pro-Grid filter delivers low maintenance and dependable operation.


  • Reinforced thermoplastic filter tanks constructed from durable glass reinforced copolymer to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems
  • Self-Aligned tank top and bottom make access to servicing the grid elements fast and simple
  • Heavy-duty, tamper-proof one-piece flange clamp securely fastens tank top and bottom, allowing for quick access to all internal components without disturbing piping or connections
  • High impact grid elements designed for up-flow filtration and top-down backwashing for maximum efficiency
  • Integral lift handles and uniform low-profile base make removal of grid nest fast and simple
  • Inlet diffuser elbow distributes flow of unfiltered water evenly to all filter elements and provides even distribution of D.E. to grids
  • 72 ft filter made of reinforced thermoplastic allows for both commercial and large residential applications and years of non-corrosive, trouble-free performance
  • New High capacity, rapid release manual air relief valve bleeds air with a quick quarter turn of the lever

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Product Specifications

Multiport Valve:
DE Required:
6 lbs.
Flow Rating:
96 GPM
Filtration Area:
48 sq. ft.
Turnover 8 Hrs.:
46080 gal.
Turnover 10 Hrs.:
57600 gal.

?     Asked on 10/16/2018 by

what is the sequence yo install de filter replacement grids?

A     Answered on 10/16/2018 by InyoPools Product Specialist Lennox H.

Hi. You will start with the partial size grid then the large ones. Instructions are available in our How To Replace Hayward DE Filter Grids guide. 

?     Asked on 8/15/2018 by JACK SANDERS

Will this fit in the same space as a Hayward Micro Clear 48 sq ft

A     Answered on 8/15/2018 by InyoPools Product Specialist Lennox H.

Hi, Jack. It will with slight modifications. 

?     Asked on 8/15/2018 by Jack Sanders

Will this replace a Hayward Micro-Clear 48 square Feet

A     Answered on 8/16/2018 by InyoPools Product Specialist Hector F.

Yes, the Pro Grid series is the newer filter series that replaces the older Micro-Clear D.E. filter. 

?     Asked on 6/10/2018 by Les Garten

Hello, I would like to get a Hayward DE4820 to replace an FNS Plus. My FNS plus makes me itch like crazy because it has become bare fiberglass. Will the Hayward do the same thing? If I buy the hayward 6 way multi valve with it, will I need Bulkhead fittings to purchase as well? Will the Hayward bolt up to my current Pentair Multi valve setup I am using for the FNS Plus?

A     Answered on 6/10/2018 by InyoPools Product Specialist Lennox H.

Hi, Les. This filter is made of a glass-reinforced copolymer which will not be as bad as the FNS Plus. You will not have to purchase additional bulkheads. It will not connect to your existing Pentair MPV.

?     Asked on 8/6/2017 by Dave

I am replacing an old de4820 with the newer model de4820 are the two pipe connections at the same height as the old model.

A     Answered on 8/7/2017 by InyoPools Product Specialist Lennox H.

Hi, Dave. Yes, the old and new DE4820 has the same plumbing connection height. 

?     Asked on 6/21/2017 by Jerry Shannon

I have a 22x41 x 52" deep Doughboy above ground pool. It is recessed and has a deck surrounding the entire top and all sides are enclosed. Will the model DE4820 filter work on my pool. I have a new Hayward 1.5 hp matrix pump and am using a Hayward sand filter currently. Not getting great filtering due to no main drain and surrounding trees with polin, dust and other airborne dirt. Have to Floc every 3 weeks. I figure i have roughly 30,000 gallons. Looking forward to your suggestions

A     Answered on 6/21/2017 by InyoPools Product Specialist Patrick P.

Hi Jerry, I believe you posted an earlier question about the Perflex EC50AC and I do like this Pro Grid Filter better than the EC50AC for a few reasons. The first reason is that the DE grids on the DE4820 are much less expensive to replace at approximately $125 for the Pack of 8 DE Grids vs. roughly $350 for the Perflex Replacement DE Fingers. Second... the DE4820 gives you about twice the filtering capacity as the EC50AC. If you go with the DE4820 you will also need this Hayward DE4820 Pro Grid Backwash Valve.

?     Asked on 6/19/2017 by Mike

I can find replacement DE 4800 assemblies online for the same price as the 4820. I understand they're interchangeable but is there any reason I'd want to get a 4820 rather than a 4800?

A     Answered on 6/20/2017 by InyoPools Product Specialist Patrick P.

We have always used this Hayward 48 Sq. Ft. DE Grid Cluster for both the DE4800 and the DE4820 and we have never had any issues.

?     Asked on 5/12/2017 by June

I have a 20x40 inground pool. My pump is 2 hp with 2" piping. Will the Hayward DE4820 be the right pool filter to purchase? Thank you for all your help. Your website is the best website to visit with pool questions and do-it-yourself videos. Your are the best!

A     Answered on 5/13/2017 by InyoPools Product Specialist Patrick P.

Hi June, Thanks so much for the nice compliment! The DE4820 would work fine for your 2 HP pump but if your pocketbook can afford it I would suggest the Hayward DE6020 60 Sq. Ft. filter as it has a larger filtering capacity. The larger filter capacity means more time between cleaning your DE grids, also the larger filter puts less stress on your pump allowing for a longer life on your pump.

?     Asked on 11/9/2016 by Ken

Hello. Would like to obtain a replacement hold down ring for the filter shell, which holds the top of the filter shell to the bottom. Can you provide me a part number for the Hayward model DE4800 Serial 330L30?

A     Answered on 11/9/2016 by InyoPools Product Specialist Megan C.

Hello, Ken. The Clamp with Spring Assembly is an Obsolete item, it is no longer manufactured. The Hayward Pro Grid DE Filter 48 Sq Ft w/o Valve - DE4820 is the replacement filter.

?     Asked on 8/7/2016 by Ian

I currently have a mirco-clear DE6000 that just let go. Will the De4820 be a suitable replacement? My pool is a 18 by 36 rectangle. Also, is the size similar or do I need to adjust the pipes coming out of the ground?

A     Answered on 8/11/2016 by InyoPools Product Specialist Alan M.

Hello, Based on the dimensions and assumed depth of your pool, the Hayward Pro Grid DE Filter 48 Sq Ft w/o Valve will accommodate your size pool. The valve size should be the same, but the height may be different. There is a possibility you would need to do some minor replumbing of your existing piping.

?     Asked on 6/25/2016 by Dominic Scaletta


A     Answered on 6/26/2016 by InyoPools Product Specialist Alex V.

Dominic, If you brush the product towards the main drain, the filter should be able to remove it from the pool.

?     Asked on 6/24/2016 by Mark Hardie

I have a de4800 filter, will the de4820 body clamp fit the de4800

A     Answered on 6/24/2016 by InyoPools Product Specialist Scott W.

Yes sir, the de4820 clamp will fit.

?     Asked on 6/23/2016 by Mark

I have a de4800 filter I want to get the newer model de4820 it is a direct fit replacement Can I run two filters in parallel adding the 4820 with my 4800 I want to by the pentair 1.5 variable speed motor to run the system Will this work

A     Answered on 6/30/2016 by InyoPools Product Specialist Lennox H.

Hi Mark, The DE4820 is a direct replacement for the DE4800.You can install the two filters parallel, however, you will need to install a diverter valve where the filter tee off so that you'll be able backwash the filters separately.

?     Asked on 6/23/2016 by Mark

Does the body clamp on the newer model de4820 fit the older model de4800

A     Answered on 6/26/2016 by InyoPools Product Specialist Alex V.

Mark, The newer style clamp will not fit the older style body.

?     Asked on 6/15/2016 by Karen

We currently have a Hayward Perflex EC75A would the Pro Grid 4820 be a suitable upgrade for this size DE filter. Also I assume we will need to purchase a multiport valve as well, is this correct?

A     Answered on 6/15/2016 by InyoPools Product Specialist Patrick P.

Hi Karen, Yes the DE4820 would be the appropriate upgrade for an EC75A and you would need this Multiport Valve I like the DE4820 Pro Grid Filter over the Perflex EC75A because when you replace the grids on the Pro Grid they are about $125 where replacing all the fingers on the Perflex can be in the neighborhood of $575

?     Asked on 6/3/2016 by

I have a de4800 and need a new top lid for it. Where can I get one. Nobody seems to carry it anymore.

A     Answered on 6/9/2016 by InyoPools Product Specialist Lennox H.

Hi, Unfortunately, the manufacturer no longer make the Top for the DE4800 filters, so you will have to replace the entire filter. The DE4820 will be a suitable replacement.

?     Asked on 5/16/2016 by

Hi, I have a Haywood 4800 And need a DEX2400C replacement part . Where can I find this ?

A     Answered on 5/18/2016 by InyoPools Product Specialist Lennox H.

Hi, The Manifold DEX2400C will fit the Hayward DE4800 filter. You can locate other replacement parts via the Hayward Micro Clear D.E. Parts.

?     Asked on 4/13/2016 by

What else do I need to buy to install the Hayward DE4820 ProGrid 48 Square-Foot Vertical Grid DE Pool Filter. Please be specific.

A     Answered on 4/13/2016 by InyoPools Product Specialist Lennox H.

Hi, If you're installing a D.E. filter for the first time you will need the following: D.E. Filter, Multiport or Slide Valve, D.E. Powder, D.E. Measuing Scoop, Backwash Hose.

?     Asked on 4/1/2016 by Rick

I have a DE4800 and understand that the 4820 is the replacement. Will my multiport valve which fits the DE4800 fit onto the 4820? Can any of my Grids from the DE-4800 be used in the 4820 (now I would have a complete spare bundle)?? What other components might be interchangeable or useable?

A     Answered on 4/1/2016 by InyoPools Product Specialist Hector F.

Yes you can use the same multi port valve, grids, and manifold. As far as any other interchangeable parts, here is the parts diagram for the 4800 and the 4820 if you need to check into those parts.

?     Asked on 5/31/2015 by Don

I have an 18x36 rectangle inground 3ft to 8ft deep, I currently have a DE filter Nautilus PacFab NS36, is this a good replacement or overkill? My pump is a 1.5hp superpump with 1.5" plumbing.

A     Answered on 5/31/2015 by InyoPools Product Specialist Hector F.

Based on the model pump and surface area of your pool, this filter is a good recommendation for your application.

?     Asked on 5/3/2015 by

I have a Hayward Micro Clear model DE 4800 - will this 4820 model replace it?

A     Answered on 5/3/2015 by InyoPools Product Specialist Patrick P.

Yes the Hayward DE4820 Pro Grid DE Filter is the direct replacement for the Hayward Micro Clear model DE 4800.

?     Asked on 4/19/2015 by FRAN MCHALE


A     Answered on 4/20/2015 by InyoPools Product Specialist Joe S.

Hello Fran, Measurements for this unit are 41 inches High, 23 inches wide

?     Asked on 9/16/2014 by Guest

I am getting DE back into my pool after I backwash, do you know why?

A     Answered on 9/16/2014 by InyoPools Product Specialist Patrick P.

The main reason is that one or more of your grids are torn and DE is passing through. Please remove all the grids and thoroughly inspect each for rips or cracks in the plastic structure. Also check the manifold ( the piece the grids fit into ) for cracks in the plastic. If there is nothing wrong with either of those, one other possibility is that the spider gasket in the multi-port valve may be torn and not sealing correctly.

?     Asked on 9/15/2014 by Guest

How much D.E. powder does this Hayward de4820 filter use?

A     Answered on 9/15/2014 by InyoPools Product Specialist Patrick P.

This filter model uses approximately 8 lbs. of D.E. powder when completely empty and approximately 4 lbs. of D.E. after backwashing.

?     Asked on 10/8/2013 by Guest

How do I backwash my Hayward Vertical Grid DE filter?

A     Answered on 10/8/2013 by InyoPools Product Specialist Patrick P.

When the filter pressure rises 8-10 PSI over the clean starting pressure, the filter must be backwashed. Turn off the pool pump. Rotate the multiport valve to backwash position or slide the slide valve up. When the pump is turned on, the dirty DE and water will flow out to waste. Once the water runs clear, turn off the pump. With a slide valve, push the handle down and start the pump. Once the pump is primed, add the required DE. If using a multiport valve, rotate the handle to rinse. Turn on the pump and let water flow for 20-30 seconds, cleaning out the plumbing lines. Turn off the pump and rotate the valve back to filter. Turn on the pump and once primed add required DE.


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