balll valve selection

Do some internet search for manufacturers, including pipe size and desired pressure drop. This kind of data can usually be taken from the commercially available models more easily.

If it has to be ball vave try Argus,Mogas,valve technologie inc,or Metso.

If you can live with High performance butterfly valve look into Vanessa(Tyco),Orton or Adams valve

A couple of questions:

1. What are you using this valve to do? Isolation, modulation

2. Will this valve be a manual valve, or automated (either electric or pneumatic)?

Now for a few comments:

1,000 psig at 750 deg F is SUPERHEAT. It has been my experience that ball valves are not used in these applications. The customer uses bellow sealed stop/gate/globe valves.

I would not recommend anyone installing a ball valve under these conditions (if that is your operating condition) as it is nearly impossible to slowly open this valve for a safe and slow start-up of your steam system.

Additionally, to ensure that you can safely start-up the system, I would install a drip leg with a Thermodynamic steam trap (rated for 1,000 psig at 1,000 deg F) just upstream of the isolation valve to ensure no condensate is sitting on the upstream side of the isolation valve.

The material of construction of the isolation valve will probably be Crome Molly F22 (or similar grade). You can try the brand Bonney Forge and see if they have a valve suitable for isolation.

Good luck and be safe!