High Temperature Seat Seals for Ball Valves
High Temperature Seat Seals for Ball Valves
(OP)
For ball valves, we usually use Spring Energized Teflon seals for the seat position for temperature range under 300C. But now we have an application where the fluid temperature can be 400C to 450C where Teflon will not work, what kind of seal should we use?
thanks,
thanks,





RE: High Temperature Seat Seals for Ball Valves
what about graphite or a metal-to-metal seating?
RE: High Temperature Seat Seals for Ball Valves
How about Turcon..
John
RE: High Temperature Seat Seals for Ball Valves
RE: High Temperature Seat Seals for Ball Valves
JLSeagull is correct in my opinion.
At this temperature you should have a serious look at your valve selction, and include in the selection process type of fluid, pressure before and after the valve, necessary pressure class (pressure and temperature determined!), performance required (thigtness,tests,special considerations as anti-static,firesafe, pressure loss etc) and also lifetime expectancy of the different valve types including sealing.
It is always better to optimize from process requirements and engineering and equipment economy than starting with a certain type of valve in mind.
RE: High Temperature Seat Seals for Ball Valves
Take a good hard look at whether or not a ball valve is the right selection for your service. Other valve designs exist for a reason...
If you still need a ball valve, there are still plenty of manufacturers to choose from who know how to do metal seats properly. They're not cheap, though.
RE: High Temperature Seat Seals for Ball Valves