Swing check valve, pressure seal bonnet failure
Swing check valve, pressure seal bonnet failure
(OP)
Mere months following installation 6inch 900# CS BW sch120 leaked at its side flange. Valve is in boiler feedwater service exiting heater @1500psig,600degF fluid conditions. Need to how failure can happen assuming valve was not damaged going in? Any suggestions on this reknowned manufacturing job.





RE: Swing check valve, pressure seal bonnet failure
Hope this helps.
saxon
RE: Swing check valve, pressure seal bonnet failure
RE: Swing check valve, pressure seal bonnet failure
Fred