The valves are 2" class 800# gates valves, Body is Astm a350 lf2, the wedge and seat ring are 316SS with satellite 6 overlay, the media is refrigerant gas at minus 46deg c, isolation valves only.
The spec does not define between full or half hard faced trim.
The valve supplier has offered full...
Hello,
Subject: stellite 6 trim on Gate valves
I'd like to know if galling prevention is better achieved on full stellite trim (wedge and seat area) or half stellite trim (seat only)for wedge type gate valves?
Thanks in advance
Rusty211167
