对夹直通/双瓣式止回阀概述
对夹直通/双瓣式止回阀由阀体、阀瓣、弹簧等组成，水平或垂直安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好.
对夹止回阀SH-7系列双瓣式规格示例图
阀体BODY | 304/316/316L |
阀板disc | 304/316/316L |
阀座 Seat | EPDM、NBR |
阀轴 Axis | 316不锈钢 Stainless steel |
垫圈 Washer | 聚四氟乙烯PTFE |
弹簧 Spring | 不锈钢Stainless steel |
公称通径 Nominal diameter | DN50-DN600 |
公称压力 Nominal pressure | PN1.0-1.6MPA |
适用介质 Suitable medium | 水、海水、污水、油 Water, seawater, sewage, oil |
适用温度 Suitable temperature | -10-110℃ |
通径 | D | D1 | R | API954-1991L | GB/T12221-1989L |
50 | 107 | 60 | 52 | 54 | 43 |
65 | 127 | 73 | 63 | 54 | 46 |
80 | 142 | 89 | 78 | 57 | 64 |
100 | 162 | 114 | 102 | 64 | 64 |
125 | 192 | 141 | 127 | 70 | 70 |
150 | 218 | 168 | 154 | 76 | 76 |
200 | 272 | 219 | 202 | 95 | 89 |
250 | 327 | 273 | 254 | 108 | 114 |
300 | 377 | 324 | 303 | 143 | 114 |
350 | 440 | 356 | 318 | 184 | 127 |
400 | 491 | 406 | 381 | 191 | 140 |
450 | 541 | 457 | 429 | 203 | 152 |
500 | 596 | 508 | 478 | 213 | 152 |
600 | 698 | 610 | 575 | 222 | 178 |
对夹止回阀SH-7系列直通式
NO. | 部件名称 PART NAME | 材料 MATERIAL |
1 | 阀体 BODY | 304/316/316L |
2 | 阀瓣 DISC | 304/316/316L |
3 | 弹簧盘 SPRING DISC | SUS316 |
4 | 弹簧 SPRING | SUS316 |
通径mm | 英寸” | d | A | B | C | D | L | WEIGHT Kg |
15 | 1/2 | 15 | 35 | 45 | 43 | 53 | 16 | 0.12 |
20 | 3/4 | 20 | 42 | 55 | 55 | 65 | 19 | 0.24 |
25 | 1 | 25 | 46 | 65 | 58.5 | 74 | 23 | 0.3 |
32 | 11/4 | 32 | 61 | 78 | 76 | 84 | 28 | 0.52 |
40 | 11/2 | 40 | 71 | 88 | 82 | 94 | 32 | 0.72 |
50 | 2 | 50 | 80 | 98 | 93 | 107 | 40 | 1.02 |
65 | 21/2 | 65 | 100 | 118 | 112 | 126 | 46.5 | 1.68 |
80 | 3 | 80 | 110 | 134 | 125 | 144 | 50 | 2.22 |
100 | 4 | 100 | 133 | 154 | 149 | 162 | 60 | 3.4 |
150 | 6 | 150 | 197 | - | 216 | 220 | 106 | 9.82 |
