Safety valve opening pressure, return pressure
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When the safety valve comes out, is it set safely? , when to adjust? How to set the opening pressure and return pressure of the safety valve? Let’s discuss it, everyone
Safety valves usually need to be calibrated and filed at the user's local boiler inspection office
The safety valve has been debugged before leaving the factory, but it still needs to go to the quality supervision center where the user is located for pressure adjustment and a lead seal with the quality supervision institute's plate on it. This private person is not qualified to list, and the listing is invalid. If found, he will be fined. The opening pressure of the safety valve takes into account the pressure that the equipment and connected pipelines can withstand, and will be partially higher than their working pressure to prevent pressure fluctuations from causing the valve to jump. The reseating pressure is usually similar to the normal working pressure to ensure that the container is not overly depressurized.
Newly purchased safety valves should be inspected (calibrated) by a department with inspection qualifications before use. The opening pressure, etc. should be set according to the actual conditions of the device.