I have a fagor stovetop and an electric both are serviceable. I like the electric I can start and not to monitor it like a stovetop.
Every electric I've seen can't hit 15 PSI and it all depends on what you're looking to do with it. I got a fagor for a wedding present and it suits all my needs, but I'd spring for a kuhn if I was starting again from scratch. Despite the convenience of a counter top electric, it's not flexible enough for how I use mine to recommend.
I use mine as a small batch pressure canner in addition to a standard pressure cooker. I have a big pot for large batch pressure canning, but if I need to do a single or handful of jars then I just use the Fagor. being able to hit 15 psi seems to be the sweet spot for doing quick pressure stocks, and as was alluded to after my comment, you have to trust recipes since you can't see how things have turned out until after de-pressurization. It's very, very easy to overcook the contents if you're off by even two minutes, so it takes more trial and error with a cooker that can't get up to 15 psi, in my experience.
@WingKKF didnt want to criticize your idea (i'd be among these likely giving it a try!), but make sure a word of caution is read together with your repair suggestion. If somebody follows that advice and does so shoddily (eg not noticing surplus or stray glue contaminating the valve) it could end in an accident. Also, if something bad ever happens with that cooker due to manufacturing defects, the legal/insurance situation could get very complicated since you did an unauthorized repair/modification to it.
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