Working principle of spring safety valve

        Spring type safety valve is to rely on the power of the spring will be pressed on the valve seat, so that the safety valve is in the closed state, the spool under the steam upward from the top of the force. In normal operation, the pressure of the spring is greater than the upward thrust of the steam. When the steam pressure to achieve the safety valve seat pressure, steam on the spool force is greater than the force of the spring, so that the valve core, the exhaust valve. By adjusting the upper part of the valve stem to change the degree of tightness of the spring, you can adjust the safety valve seat pressure. The utility model has the advantages of convenient adjustment, small volume and weight, large exhaust capacity, etc. the utility model is suitable for boilers with different parameters and different capacities. .