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Which ASTM galling tests are you looking for ? I do not have very successful experience with ASTM Galling test. You may want to consider developing your own test for your own application. Luxeal

NRC boucherville, Qc, Canada. Luxeal

The orbit is a good exemple of a torque seated ball valve. Luxeal

For this temperature, SW or BW end-connections are preferred. Hub connexion could be a good alternative. Luxeal

Check also this article from Velan. A vision of the FE challenge from a valve manufacturer point of view. http://www.velan.com/ignitionweb/data/library/228/files/Zeroemissions.pdf Based on experience, proper maintenance is key to maintain low emission Luxeal

As far as I know, globe valve suppliers are more used to deal with large projects and standard materials. Have you considered MSBVs? Luxeal

What valve type are you looking for? Luxeal

hi hsbcn, 300 class - 50psi Luxeal

I learned the hard way that HVOF-Cr3C2 can embritteled when exposed to 1,400F. Embrittlement leads to hardness increase, crack propagation and coating failure. Customer suggests to switch from HVOF-Cr3C2 to NiCrB Spray-and-Fuse (C88). Does somebody experienced SF C88 at 1,400F? Knowing...

I have tested large multi-turn Sambo gear boxes on globe and gate valves. Typically, Sambo mechanical advantages are attractive (better than most manufacturers) and their design is very robust. Luxeal