Spring Fully Open Safety Valve

A spring fully open safety valve refers to a valve that is fully opened when the valve core is raised to a point where the annular area with the valve seat is equivalent to the inner diameter area of the valve seat (the raised height multiplied by the circumference of the valve core sealing surface=the area of the valve core sealing surface); Its typical feature is that the outlet diameter is larger than the inlet diameter. The main difference between a spring full opening safety valve and a spring micro opening safety valve is their opening height. Generally, the opening height of a micro opening safety valve is 1/20 to 1/40 of its seat throat diameter, while the opening height of a full opening safety valve is more than 1/4 of its seat throat diameter. The spring fully open safety valve produced by Shanghai Meiyan Yipump Valve can be divided into closed and non closed types. Closed safety valve: Due to the design of the valve being connected to the pipeline, it needs to be shut down for installation, maintenance, and replacement of the valve, resulting in lower work efficiency. Non closed safety valve: As the valve and pipeline are not directly connected, the valve body can be disassembled for maintenance without closing the pipeline, making maintenance easier.