Corrosion Resistant Check Valve 1 1/2" Inside 2" Outside 2 Lb. Spring - 25830-350-000



Part # 25830-350-000

By Custom Molded Products



Part # 25830-350-000

Alternate Part #'s CMP25830-350-000, CMP25830350

Product Description

Check Valves - Serviceable Check Valves, Corrosion Resistant

  • 1-1/2" Socket
  • 2" Spigot
  • CPVC Body (Black)
  • Clear Lid
  • Lock Nut
  • Corrosion Proof Pin and Spring
  • Corrosion Proof Hastelloy Spring -  For high stress and corrosive environments

For more Pool Valves

Product Specifications

Inside Diameter:
1 1/2 in.
Outside Diameter:
2 in.

?     Asked on 7/5/2019 by Alex Johns

Are the internals of this available to be purchased separately? As in just the clapper and gasket?

A  Answered on 7/6/2019 by InyoPools Product Specialist Lennox H.

Hi, Alex. The C.R. Flapper and Cover Assembly - 25830-350-800 is available as a separate part. 

?     Asked on 4/3/2019 by Jared

I've noticed there are check valves vale with a 2 lb. spring and some with 1/2 lb. spring. What is the reason for this? I would like a corrosion resistant valve but only seen it in a 2 lb. I do not want to add any unneeded stress to the system.

A  Answered on 4/3/2019 by InyoPools Product Specialist Lennox H.

Hi, Jared. The pump performance or flow rate info is required when sizing a check valve. The higher the flow the higher the spring.

  • Commented on 4/4/2019 by Product Owner

    Thank you. I should have known this would be your answer. Unfortunately the data plate to the pump is M.I.A. and all I know it is a Hayward and motor has a sticker with model# UST1072. I am interested in upgrading to a variable speed at some point, but wouldn't know where to begin on sizing it. Could you help?

    • Commented on 4/5/2019 by InyoPools Product Specialist Lennox H.

      Jared, If you can provide the following info, I can. The pump housing model, Total Dynamic Head (TDH) and where the check valve will be positioned. 

?     Asked on 4/13/2018 by Sam

Hello, Would you recommend this check valve in the suction side of the pool system? Out of the skimmer and before the pump? Sam

A  Answered on 4/20/2018 by InyoPools Product Specialist Joe S.

Attached is our How to Guide When To Install a Check Valve in Your Pool Plumbing

?     Asked on 7/18/2017 by Skyking

Will this hook up to 1 1/2 inch plumbing without the need for reducers. Will this just slide over my 1 1/2 inch pipe?

A  Answered on 7/18/2017 by InyoPools Product Specialist Alex V.

Hello, Yes, 1.5" pvc would fit inside of the check valve. 

?     Asked on 5/26/2017 by

i want to install this after my de filter and before chlorine feeder...the chlorine is not going to destroy it after a couple seasons?

A  Answered on 5/26/2017 by InyoPools Product Specialist Lennox H.

Hi. The check valve is designed especially for high corrosive environments like being installed next to a chlorinator. It will last, I can't say forever but it will for a few seasons. The replacement Corrosion Resistant Flapper Assembly & Cover - 25830-350-800 is available if it fails.

?     Asked on 1/15/2017 by Mark

Check value cover has 2 pin holes, Can I purchase cover only? outside diameter is 5"

A  Answered on 1/16/2017 by InyoPools Product Specialist Adam Y.

I need to know the pipe size it connects to.

?     Asked on 12/22/2016 by Bruce Sutherland

what is the total length?

A  Answered on 12/22/2016 by InyoPools Product Specialist Adam Y.

Good afternoon Bruce, The overall length is 7.5" L by 2-7/8" H.

?     Asked on 9/30/2016 by Don

Can this flapper check valve be installed in a vertical pipe run?

A  Answered on 9/30/2016 by InyoPools Product Specialist Alan M.

Yes this check valve can be installed horizontally or vertically.


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