The pilot spring safety valve is designed according to standards such as GB/T 12241, GB/T 28778, API 520, API 526, API 527, ASME VIII, etc. The main valve adopts a sleeve piston type, and the opening pressure is achieved through the indirect action of the pilot valve and the force of the medium itself; It has high action progress, good repeatability, fast seat return, and no leakage. Its novel structure allows it to discharge with high back pressure, ensuring stable and reliable operation. It can also be tuned online; Widely used in fields such as petroleum, natural gas, chemical, and urban gas.
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