High temperature operator for valve
High temperature operator for valve
(OP)
I need to install a small valve inside an oven operating at 150C. The oven wall is also a contamination control boundary so the valve operator will have to be inside the oven. Can anyone recommend a source of commercial valve operators which would operate in this service? I have sketched out a spring-to-close, air-to-open metal bellows actuator which could be designed, but I would rather purchase a commercial product. Any suggestions?





RE: High temperature operator for valve
At 150C, you are within the reasonable range for Viton or Kalrez seals, at least for an on-off actuator. Proportional control is touchier as you cant afford any stiction or hysteresis, and even an old-fashioned pneumatic positioner is likely to worry at 150C. But I would suggest go talk to your most cooperative control valve salesman; you may be surprised.
RE: High temperature operator for valve