Ok well let me start off my story by this. i went into the basement and noticed the floor was wet and the relief valve had popped off. so i initially thought it was time for a new one cause it was fairly old etc.

I decided to turn off the switch for the boiler and drain the water and let it cool for a few hours. Went to home depot and decided to replace a few things just as i didn’t know the age of them on the boiler. i picked up a new relief valve, hy-vent, and expansion tank (which i found out was from 1996 and only had about 2 psi in it). Anyway i went home replaced all 3 items on the boiler, opened the fill valve and fired up the boiler. Psi was bout at 20psi when fully hot, has been fine for a few weeks now no pop off or anything but i kept checking it and noticed that the psi keeps creeping up higher and higher. Now given my heat is off the season as i have baseboard heating but the boiler still heats my water for showers etc. Anyway it slowly creeps and now has been sitting steady between 25-28 psi which i know is not right at all. Shouldn’t it be at about 20psi full operating temp around 180 degress? Only thing left by what i was reading it could be would be faulty internal leaking water reducing valve. mine is currently a B&G.

Let me know what you guys think of my situation, also is there anyway to tell if the pressure reducing valve is leaking internally? i read one thing saying if you touch the “bell” part of it and its stone cold that water is getting through and that is leaking internally. this should be warm or hot to the touch ?

thanks guys let me get some of your opinions.