这种安全阀的缺点是所加的载荷会随着阀的开启而发生变化，即随着阀瓣的升高，弹簧的压缩量增大，作用在阀瓣上的力也跟着增加。这对安全阀的迅速开启是不利的。另外，阀上的弹簧会由于长期受高温的影响而使弹力减小。用于温度较高的容器上时，常常要考虑弹簧的隔热或散热问题，从而使结构变得复杂起来。R900968138DBE10-3X/315XYG24NK4R900474895DBE10-3X/315XYG24Z4R900444069DBE10-3X/315XYG24Z4VR900350629DBE10-3X/315XYZ4-246R900387032DBE10-3X/315YEXR900400149DBE10-3X/315YG12FHR900336877DBE10-3X/315YG24JR900958418DBE10-3X/315YG24K4R900337424DBE10-3X/315YG24NZ4R900442322DBE10-3X/315YG24Z4R900385136DBE10-3X/315YG24Z4MKR900475194DBE10-3X/315YG24Z4VR900466235DBE10-3X/50XYG24Z4R900396045DBE10-3X/50YG12Z4VR900520284DBE10-3X/50YG24EXR900587338DBE10-3X/50YG24JR900403979DBE10-3X/50YG24NZ4R900447597DBE10-3X/50YG24Z4R900481495DBE10-3X/50YG24Z4MKR900455119DBE10-3X/50YG24Z4VR900576604DBE10-3X=200YG24Z4-30)