Sorry for the delay in responding had a job come up. The boiler in the photo is on line and supplying steam. When I shut it down and close the valves the packing leak goes down to just a little mist of steam. I've tried back seating the valve with no luck. I forgot to mention this is a 1969...
That's good advise and so far I haven't been able to find anymore information on this procedure of live packing insertion is there another name for that process?
I think I have no choice but to do a total steam shut down but I thought maybe someone else would know more about the construction on a non-return valve. I'm thinking about the location of the packing gland in relationship to the disk in the valve itself. I've attached a photo and you'll notice...
No they're both not required. Every year we have to shut one down and take it apart for inspection and we can do that by closing (locking & tagging) both the isolation and the non-return valves. We just did that and I noticed that the packing on the non-return valve wasn't leaking nearly as much...
I'm new to this sight so please be patient. I have two boilers with a common header that feeds our facility, each boiler has two valves between the header and the boiler and the piping between the two valves has a small drain line with a valve. We refer to the 1st valve closest to the boiler as...
