| 产品特性：安全阀 | 品牌：永一 | 型号：GYA |
| 阀瓣开启高度：液压式 | 结构形式：液压式 | 3C阀门类别：工业 |
| 加工定制：是 | 连接形式：法兰 | 材质：碳钢 |
| 公称通径：DN20-500mm | 适用介质：空气 | 标准：国标 |
| 流动方向：单向 | 零部件及配件：配件 | 形态：蝶式 |
| 类型(通道位置)：二通式 | 阀体构造：不封闭式 | 规格：DN20-500 |
GYA液压安全阀
液压式安全阀是（活瓣式） 呼吸阀的安全备用设备，它的吸气和呼气的动作压力略高于（活瓣式）呼吸阀一量失灵或在冬季其活瓣冻结时，液压安全阀的液封即被破环从而保护油罐免遭破环。
液压安全阀装于油罐顶部与呼吸阀配合使用。
控制压力：+56毫米水柱至-50毫米水柱。
liquid-pressure style safety valve is a assistant equipment of the breathing valve(moving disc style),the active pressure of aspera-tion and expiration is higher than breathing valve(moving disc style ),asupon once the breathing valve does not work in winter ,the moving disc will de frozen,the liquid seal of the liquid –pressure style safety valve can be broken for protecting the oil tank.
liquid-pressure safety valve will beinstalled in top of oil tank and assorted used with breathing valve.
the control pressure:+56mm water columm to -50mm water columm.
