3.脉冲式安全阀脉冲式安全阀由主阀和辅阀构成，通过辅阀的脉冲作用带动主阀动作、其结构复杂，通常只适用于安全泄放量很大的锅炉和压力容器。上述三种形式的安全阀中，用得比较普遍的是弹簧式安全阀。R900350629DBE10-3X/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=200YG24Z4-308R900573783DBE10-5X/100XYG24Z4MR900916121DBE10-5X/100YG24K4MR901085195DBE10-5X/100YG24K4V)