Spring Loaded Safety Valve

Oct 25,2022

Spring-loaded safety valve refers to the valve's flap or plunger and other seals latch by relying on the elastic pressure of the spring. Once the high pressure generated when the pressure of the pressure vessel is abnormal will overcome the spring pressure of the safety valve, so the latching device is topped off and a pressure relief channel is formed to release the high pressure.

Spring Loaded Safety Valve Price

The market price of spring type safety valve is about $30-120 range.

Spring Loaded Safety Valve Structure

Spring type safety valve structure Introduction Spring type safety valve is generally composed of 10 parts, which are the adjusting screw.Valve stem.Spring.Valve cover.Guide sleeve.Backlash disc.Regulating ring.Valve body.Valve flap and valve seat.Safety valves are classified according to their structure and can be divided into lever type.Spring type.Each type of structure is more or less the same, the difference lies mainly in the important parts of the different, for the spring safety valve, in the nominal pressure range, the spring according to the working pressure level can be divided into several different types, each type of force and application range is not the same, we are in the purchase of spring type safety valve, must be clear about their desiredpressure level, and then consider the medium of the safety valve.Temperature.Model and other aspects.

Spring-loaded safety valve working principle

According to the analysis of the spring-loaded safety valve opening action characteristics, it can be derived: under the action of the external force FW, a safety valve from closed to open, and then from open to close the whole process, the law of change of the external additional force FW, when the additional force gradually increased from zero, and the sum of the internal pressure PL × S is exactly the spring preload, the valve slightly open, increasing the media area S, so that the spring preload used to overcomeThe result is a sharp increase in the internal pressure, which instantaneously reduces the external additional force.When the additional force gradually decreases and reaches the closing point, due to the sudden reduction of the medium area of action, in order to maintain the balance of forces, at this time, the additional force will appear momentarily back up phenomenon, that is, the second characteristic peak point B. The above two characteristic peak points A and B is the online conditions to detect the safety valve opening pressure.The above two characteristic peak points A and B are the technical basis for detecting the opening pressure.