Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Leaking Hayward DE3620 Manual Air Relief Valve Assembly

  1. Back To Top    #1

    Leaking Hayward DE3620 Manual Air Relief Valve Assembly

    Hello everyone,

    My roommate has a old Hayward DE3620 pool filter (about 9 years old). Whenever there is any kind of pressure built up from filtering it starts leaking pretty badly from the top assembly where the manual air relief valve is (after a backwash it does not leak for a bit until the filters start clogging up again). I started researching and see that it is replaceable for a decent price however there is a difference in the one that is currently on the filter and the ones that I see for sale. The one currently on the filter has what appears to be some sort of pressure relief valve inside the top which is where the water is leaking from along with a small screw type manual air relief. The replacements I see for sale do not appear to have this pressure relief valve (they only have the actual manual air relief valve).

    Can anyone let me know if this replacement will work or any issues it would cause?

    Are there other replacements I should be looking at?

    Also it's model number looks more like its for a DE2420 but will this actually fit the DE3620?

    Here is the replacement I am looking at:

    Attached is a picture of the current filter top and where it is leaking from.

    Thank you for your help!
    Attached Images Attached Images

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Houston, Texas

    Re: Leaking Hayward DE3620 Manual Air Relief Valve Assembly

    It looks like there may have been a design change for that model. I would try contacting Hayward customer service and make sure that part will work with the older model filter. Also if you can take a picture of the label on the filter it would give us more information and we may be able to find out if this is the correct part.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts