I was bleeding the air out of hydronic heating zones and I notice some mineralization on bleed valve attached to my air scoop. I took the Schrader valve cap off and tapped the valve I noticed it was crusted stuck. When I tapped it it came free and quite a bit of air came out (which would explain why I had to bleed my zones).
Can I put a couple drops of CLR on the valve to try and clean it out and prevent the mineralization? We have a softener but still the water is hard. The valve was just replaced last year (was a few years old and had been neglected). I know they are cheap and easy to replace but just trying avoid it if I don't have to.