The aqua disc 54

Bobpagnotti

I'm a do it your self guy have a forced hot water one zone system I was wondering how these values work and am I supposed to remove any disc when I install them my original are all  corroded  and need change and was wondering what needs to be done can't afford to get a professional to come to my house . Got new values at a plumbing supplier but they couldn't give me any information on how to use them

EdTheHeaterMan

I tried to find out what IS an aqua disk, in order to help you on this, but this is all I could find. Not sure this is what you have.
Perhaps you can offer more information. Maybe a brand name or a picture of the device. Are there any identifying marks on the device? Where does it go on your system?

Yours Truly
Mr. Ed>>>Looking for more info

JUGHNE

Show us the valves you are referring to and where they are installed.

Are these air bleeders?

Is this a baseboard heating system or cast iron radiators?

Steamhead

Maybe the hot-water version of this?

https://www.statesupply.com/gx1045?gclid=Cj0KCQjwmN2iBhCrARIsAG_G2i6Z0GZwseAUnY1yXWvNkxxk1GZYXc9ADBZIHXEUD_1Wwolvicms_JQaAhKtEALw_wcB

which would be-

https://unitedsupplyusa.com/gon-54-54-aqua-disc-valve.html