In November of 2015 we received the following question from a customer: We are replacing an air maintenance device on a Grinnell F302 dry valve, can we replace the existing device with a General air maintenance device or must we use a listed Grinnell device? Is it OK to use the General device on any… Read more …
![a row of blue and yellow valves with a red label that says ' warning ' on it](https://www.generalairproducts.com/wp-content/uploads/2021/12/amds-e1639581768960-150x150.jpg)