ball valve selection and fitting

[lisa_01]

I don't have that much experience with valves and I would really appreciate if someone could kindly help me out with this problem.

I have a nozzle (photo uploaded below) in a vessel thats 150mm in hole diameter with a weird shape flange. A ball valve needs to be mounted on top for powder loading.

Constraints
i)Valve needs to avoid cross contamination between different powders.
ii)flange can't be drilled for bolts.
iii) Valve will experience Max Temp 260 degree celcius and Max Pressure 250kpa from the nozzle.
iv) Actuator can be added

Please recommend/link me a ball valve and a clamp or any other fittings for the connection with the nozzle. Also, any modification needed for the nozzle that might help the connection?

https://files.engineering.com/getfi...ile=Screen_Shot_2020-04-04_at_10.34.14_pm.png

 

[mk3223]

The issue is real but the information isn't enough for the question.
Better to have the equipment drawing or a real photo of the nozzle configuration.

 

[gerhardl]

Agree with mk3223!

Some additional issues to think about:

1. What is most essential: reasonable (low?) price, or reliable longterm operation and high quality. Price/lifetime cost?
2. How absolute must the non-contamination be?
3. Why ballvalve?
4. Knifegate valve type like stargate O-port might be an alternative both for less contamination and high temperature.
4. Mechanical solution: Separate support for the actuator might be necessary. Actuator type, cycle time and lifetime.
5. Mounting of vale and actuator support how? Possibilities? Any(new)flange and support can be machined to order.

Good luck.