| GYA系列 用途 Usage 1、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，在呼吸阀一旦失灵或在冬季其活瓣冻结时，液压安全阀的液封即被破坏从而保护油罐免遭破坏。
2、液压安全阀装于油罐顶部与呼吸阀配合使用。
3、控制压力：+56毫米水柱至-50毫米水柱。 | 1. Liquid-pressure style safety valve is a assistant equipment of the breathing valve (moving disc style), the active pressure of aspi-ration and expiration is higher than breathing valve (moving disc style), as upon once the breathing valve does not work in winter, themoving disc will be frozen, the liquid seal of the liquid-pressure style safety valve can be broken for protecting the oil tank.
2. Liquid-pressure safety valve will be installed in top of oil tank and assorted used with breathing valve.
3. The control pressure: +56mm water column to -50mm water column. | | 外形尺寸和连接尺寸 Dimensions (mm) | | Type | Specification | Dimensions (mm) | Weight
(kg) | | d | D | D1 | D2 | n-d1 | L | H | | GYA-80 | 80 | 85 | 185 | 150 | 125 | 4- 18 | 376 | 424 | 38 | | GYA-100 | 100 | 105 | 205 | 170 | 145 | 4- 18 | 500 | 605 | 42 | | GYA-150 | 150 | 148 | 260 | 225 | 200 | 8- 18 | 650 | 705 | 66 | | GYA-200 | 200 | 210 | 315 | 280 | 255 | 8- 18 | 900 | 755 | 97 | | GYA-250 | 250 | 264 | 370 | 335 | 310 | 12- 18 | 1,050 | 885 | 140 | |
