■性能规范 性能规范 | 设计规范 | 结构长度 | 连接法兰 | 试验与检验 | 产品标识 | 供货规范 | GB/T 12224 | GB/T 12221 | JB/T 78;JB/T 79 | GB/T 13927 | GB/T 12220 | JB/T 7928 | 设计与制造符合中国国家标准 基本结构形式:升降立式(新型) 主要零部件材料见表6-1 公称压力:PN1.0~2.5MPa 公称通径:DN15~500mm 衬里型式:全衬里型、半衬里型 衬里止回阀系列 ■主要外型和连接尺寸 公称通径 | 标准值 | 参考值 | DN(mm) | NPS(inch) | L | D | D1 | D2 | f | b | Z-φd | WT(kg) | PN1.0MPa | 15 | 1/2 | 108 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 2.5 | 20 | 3/4 | 117 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 3.5 | 25 | 1 | 127 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 4 | 32 | 11/4 | 140 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 5 | 40 | 11/2 | 165 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 6 | 50 | 2 | 203 | 160 | 125 | 100 | 3 | 20 | 4-φ18 | 8 | 65 | 21/2 | 216 | 180 | 145 | 120 | 3 | 20 | 4-φ18 | 10 | 80 | 3 | 241 | 195 | 160 | 135 | 3 | 22 | 4-φ18 | 13 | 100 | 4 | 292 | 215 | 180 | 155 | 3 | 22 | 8-φ18 | 25 | 150 | 6 | 356 | 280 | 240 | 210 | 3 | 24 | 8-φ23 | 46 | 200 | 8 | 495 | 335 | 295 | 265 | 3 | 26 | 8-φ23 | 100 | 250 | 10 | 622 | 390 | 350 | 320 | 3 | 28 | 12-φ23 | 155 | 300 | 12 | 698 | 440 | 400 | 368 | 4 | 28 | 12-φ23 | 180 | 350 | 14 | 787 | 500 | 460 | 428 | 4 | 30 | 16-φ23 | 220 | 400 | 16 | 914 | 565 | 515 | 482 | 4 | 32 | 16-φ25 | 275 | 450 | 18 | 978 | 615 | 565 | 532 | 4 | 32 | 20-φ25 | 300 | 500 | 20 | 978 | 670 | 620 | 585 | 4 | 34 | 20-φ25 | 392 | PN1.6MPa | 15 | 1/2 | 108 | 95 | 65 | 45 | 2 | 14 | 4-φ14 | 2.5 | 20 | 3/4 | 117 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 3.5 | 25 | 1 | 127 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 4 | 32 | 11/4 | 140 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 5 | 40 | 11/2 | 165 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 6 | 50 | 2 | 203 | 160 | 125 | 100 | 3 | 20 | 8-φ18 | 8 | 65 | 21/2 | 216 | 180 | 145 | 120 | 3 | 20 | 4-φ18 | 10 | 80 | 3 | 241 | 195 | 160 | 135 | 3 | 22 | 8-φ18 | 13.5 | 100 | 4 | 292 | 215 | 180 | 155 | 3 | 24 | 8-φ18 | 28.5 | 150 | 6 | 356 | 280 | 240 | 210 | 3 | 28 | 8-φ23 | 48 | 200 | 8 | 495 | 335 | 295 | 265 | 3 | 30 | 12-φ23 | 105 | 250 | 10 | 622 | 405 | 355 | 320 | 3 | 32 | 12-φ25 | 165 | 300 | 12 | 698 | 460 | 410 | 375 | 4 | 34 | 12-φ25 | 195 | 350 | 14 | 787 | 520 | 470 | 435 | 4 | 38 | 16-φ25 | 238 | 400 | 16 | 914 | 580 | 525 | 485 | 4 | 40 | 16-φ30 | 295 | PN2.5MPa | 15 | 1/2 | 108 | 95 | 65 | 45 | 2 | 16 | 4-φ14 | 3 | 20 | 3/4 | 117 | 105 | 75 | 55 | 2 | 16 | 4-φ14 | 4 | 25 | 1 | 127 | 115 | 85 | 65 | 2 | 16 | 4-φ14 | 5 | 32 | 11/4 | 140 | 135 | 100 | 78 | 2 | 18 | 4-φ18 | 8.5 | 40 | 11/2 | 165 | 145 | 110 | 85 | 3 | 18 | 4-φ18 | 9.8 | 50 | 2 | 203 | 160 | 125 | 100 | 3 | 20 | 4-φ18 | 17 | |