?     Asked on 8/21/2015by Inyo Visitor

Can you please supply me with the dimension for this part?
 Reply

A  Answered on 8/25/2015 by InyoPools Product Specialist Lennox H.

Hi, We do not have dimensions at this time for the Union Nuts Set of 2 (HAXNUT1930). These Union Nut are specifically for the Hayward H-Series ED1 & ED2 Heaters.
 Reply


?     Asked on 5/20/2016by Doug

Are these nuts for the inlet/outlet header for a 200 BTU Hayward pool heater.
 Reply

A  Answered on 5/21/2016 by InyoPools Product Specialist Patrick P.

Hi Doug these are the nuts for the inlet and outlet header for the following 200,000 BTU Hayward Units H200ED1, H200PED1, H200ED2, H200PED2, H2001 and H200P1
 Reply


?     Asked on 6/11/2017by Amy

I need this for Model Number H400PED2. Its if the same? The Union wont screw back into the unit. Thanks
 Reply

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

Yes these are the correct unions for the Hayward H400PED2 Heater.
 Reply


?     Asked on 6/11/2017by Amy

Is it common to have to replace these parts? The one I have wont screw back into the unit. How do I know if it is the part or the unit itself?
 Reply

A  Answered on 8/5/2017 by InyoPools Product Specialist Alex V.

Amy, the thread on the union nuts can go bad. Typically, this would be the case if they are cross threaded. To find out which one is bad, visually inspect the threads on the union nut and on the unit. 
 Reply


?     Asked on 6/3/2018by Inyo Visitor

Are these the 3inch?
 Reply

A  Answered on 6/5/2018 by InyoPools Product Specialist Lennox H.

Hi, The ID is 3" the OD is 3-5/8".
 Reply


?     Asked on 4/2/2019by geovanny tapia

Hi im looking for the parts .want to make sure is fit my heater mod H150PED2 OLD MODEL NUTS SIZE 3 5/8
 Reply

A  Answered on 4/2/2019 by InyoPools Product Specialist Hector F.

The unions, o rings, flange nipples, and nuts are key 6,7, and 8 on the parts diagram here
 Reply


?     Asked on 4/21/2020by Thomas Hinojosa

Hi i have an H2501 heater and i need the union nuts and flange are these the correct ones?
 Reply

A  Answered on 4/21/2020 by InyoPools Product Specialist Lennox H.

Hi, Thomas. This is the correct Union Nuts for your model filter. The Flange - HAXNIP1930 and Union O-ring - HAXFOR1930 are the additional parts you will need. 
 Reply


?     Asked on 4/29/2020by Dave

My heater is a H2001. Will these fit?
 Reply

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

Hi Dave, these union nuts are correct to use on the Hayward heater model H2001 heater.  
 Reply