The stop valve stem is broken
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The valve core of the heating shut-off valve is broken. Is there any way to remove the broken core while the system is under pressure, so that water can flow again and the heating problem can be resolved temporarily?
Get a half-inch piece of hacksaw blade, use it to make a small scraper, and scrape a deep groove in the valve stem; then use a flathead screwdriver to widen it.
Drill a hole, tap it with a tap to create counterthreads, then install a bolt and rotate it
Like. But is it possible to avoid using counter-threaded parts? Having caps on the bolts would make on-site operation more convenient, right? ?
Is it a valve stem or a valve core, or a needle valve with the stem and core integrated?
The valve core fracture limits the rated flow rate. If it can be used, then use it. Replace it with a new one when it can be stopped. All I can think is that such reckless actions are not feasible. No matter how many spare clothes you prepare, it’s never enough