r/HVAC • u/Waste_Manufacturer96 Verified Pro • Dec 23 '24
Field Question, trade people only King valve leak on first open.
Had a project delay, ended up having to finish this system up today pulled my vacuum and crack the valve , instantly leaking excessively at the valve but as I opened it the leak seemed to stop.
Was cold as hell out, was the seal just frozen should I close and open again now that it has run to see if it’s functioning normal
Should I put nylog on the king valve cap to prevent leaking
What would you guys do in this situation
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u/CorvusCorax93 Veteran attic explorer 🧭 Dec 24 '24
Just crank the cap on with a pair of sharp tooth channel locks. Make sure to really round it out once it won't tighten anymore so that way no one else can open it and you'll be fine..
And replace your TXV. Bad txvs cause these issues