Plumbing vent

[RandU]

has anyone used these vent caps is their plumbing to quiet their system

https://www.homedepot.com/p/Sure-Vent-1-1-2-in-x-2-in-PVC-Air-Admittance-Valve-39016/100201861

 

[Crabs McJones]

has anyone used these vent caps is their plumbing to quiet their system

https://www.homedepot.com/p/Sure-Vent-1-1-2-in-x-2-in-PVC-Air-Admittance-Valve-39016/100201861

Is this able to be manually adjusted? I see in the description it says

• Opens/closes as needed by building's plumbing system

So I don't know if it would be able to automatically adjust forntye constant flowing of saltwater. #reefsquad plumbing experts any ideas.

 

[RandU]

They are not adjustable. It’s essentially a check valve for air.