?     Asked on 5/26/2015by frank

I need the part that goes on top of the filter case. compete with gauge
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A  Answered on 5/26/2015 by InyoPools Product Specialist Lennox H.

Frank, The Manual Air Relief Assy DEX2420MAR2 is what you'll need.
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?     Asked on 6/15/2015by owen

will this fit a 12 year old Hayward 4800 cartridge unit? Hayward tells me they are obsolete and there are no replacement.
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A  Answered on 6/18/2015 by InyoPools Product Specialist Lennox H.

Owen, The Filter Head 4800 New Version (DEX4820BTC) will not replace the Filter Head C4000/DE4800 (DEX4800BT), you will have to replace the complete filter with either the Hayward Swimclear Cartridge Filter 425 Sq Ft. or the Hayward Swimclear Cartridge Filter 525 Sq Ft. Filter.
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?     Asked on 2/3/2016by Peter Ralston

I have a Hayward DE4820, serial number: 330M31, and is also 12 years old; will this part fit? My top is cracked open, need to replace. Thanks.
 Reply

A  Answered on 2/4/2016 by InyoPools Product Specialist Lennox H.

Hi Peter, The New Version Filter Head (DEX4820BTC) can fit into the DE4820 filter. Also the Filter Head does not include the Manual Air Relief Assy (DEX2420MAR2) FYI.
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?     Asked on 7/26/2016by Bob

I have a 20 year old hayward filter model C4025, serial # 21110710050466007 and my upper body housing has cracked. Will this upper body housing dex4820btc work with my lower body housing?
 Reply

A  Answered on 7/30/2016 by InyoPools Product Specialist Lennox H.

Hi Bob, Yes, the DEX4820BTC will fit the C4025 filter. I'm only able to confirm based on the model number, not the serial number.
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?     Asked on 4/10/2019by Jay

The current filter i have says model number DE4800. The top has cracked. Would this top fit my current filter? Thanks.
 Reply

A  Answered on 4/10/2019 by InyoPools Product Specialist Lennox H.

Hi, Jay. Unfortunately, this Filter Head will not fit the Hayward MicroClear DE Filter DE4800
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?     Asked on 9/13/2019by Brion

I have a blue haven 450/550. The top has a crack and is leaking. Will this replace it?
 Reply

A  Answered on 9/23/2019 by Industry Professional

We do believe this is the correct top. 
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?     Asked on 4/11/2020by Inyo Visitor

Will this filter head work with my Hayward DE Filter Series Model: DE6020CP?
 Reply

A  Answered on 4/15/2020 by InyoPools Product Specialist Hector F.

Actually the correct filter head for the model Hayward DE6020 is part number 4811-299 that you can view by clicking here
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?     Asked on 4/26/2020by Rob

I have a small stress crack on my Hayward 4820 DE filter. It is not leaking but is this normal or will it ultimately fail? When replacing should I install a new filter O ring? Also is the assembly selected the correct replacement. Thanks, Rob

 Reply

A  Answered on 12/21/2020 by InyoPools Product Specialist Hector F.

Hi Rob, yes this is the correct lid assembly for your Hayward PermaGlass model DE4820 filter. Being that the lid is cracked, yes it will ultimately fail even with an attempt to seal it due to pressure changes. I would also suggest getting a new tank o ring. Sometimes the bases expand over the years due to pressure changes so a new o ring should help to seal it. 
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?     Asked on 5/6/2020by David Nhan

Is there anyways I can purchase this top head unit without the clamp? only the top was cracked. I also need a psi gauge unit. for a Hayward C2020L
 Reply

A  Answered on 1/7/2021 by InyoPools Product Specialist Hector F.

Hi David, unfortunately, this filter lid is only sold with the clamp assembly, and the pressure gauge for the Hayward SwimClear cartridge filter model C2020L is part number 4727-0.
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?     Asked on 8/18/2020by Inyo Visitor

Will this filter head fit my Hayward DE2420L?
 Reply

A  Answered on 8/19/2020 by InyoPools Product Specialist Lennox H.

Hi. The DE2420 model filter will use the Filter Head w/ Clamp Assembly - DEX2420BTC.
 Reply


?     Asked on 5/21/2023by Alan Baker

I just purchased the clamping ring for my DE4820 after my previous one failed and shot the Filter head about 50 feet into the air. I installed the new clamp and it works fine but now I have found a crack in the filter head so I have to replace that. Can I get the filter head without having to pay for the clamp ring?
 Reply

A  Answered on 5/21/2023 by InyoPools Product Specialist Hector F.

Hello Alan, Unfortunately the lid is not sold separately from the clamp however please contact us during regular business hours of M-F 9-6PM Eastern Standard time so we can see what we can do to best assist you. Using our online chat feature through our website would be the best course of action as well. Please click here to view our return policy details. 
 Reply