The reason for abnormal leakage of general spring direct acting safetyvalve is analyzed and the method for overcome this abnormal leakage is proposed.
分析了一般弹簧直接作用式安全阀非正常泄漏的原因，提出了克服其非正常泄漏的方法。
2
From spring rigidity and range of set pressure, spring optimize design to same diameter's safetyvalve at set pressure near blow-down pressure are discussed.
Fluid end consists mainly of module, suction and discharge valve assembly, suction and discharge spring, suction and discharge pipe, plunger, packing, safetyvalve and pressure regulator, etc.