| 零件名称 | 零件材料 | | 阀体 阀盖 底盖 | WCB/FCB* | | 阀座 阀盘 | 2Cr13/304* | | 缸套 | 2Cr13/25(镀硬铬)/304* | | 活塞 | 2Cr13/铜合金/铜合金* | | 活塞环 | 合金铸铁/对位聚苯* | | 导阀座 导阀杆 | 2Cr13/304* | | 膜片 | 1Cr18Ni9Ti | | 主阀 导阀弹簧 | 50CrVA | | 调节弹簧 | 60Si2Mn | | 密封垫(X/F型号) | 橡胶/聚四氟乙稀 | | 导阀体 导阀盖 | 25/304* |
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | | Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 | 25 | 36 | 64 | 100 | 140 | 250 | 400 | 570 | 780 | 1020 | 1500 |
| YK43X/F气体减压阀外形尺寸(PN1.6-4.0) | 单位:mm |
| 公称通径DN | 外 形 尺 寸 | | L | H | Hl | | 1.6/2.5MPa | 4.0MPa | | 15 | 160 | 180 | 290 | 90 | | 20 | 160 | 180 | 300 | 98 | | 25 | 180 | 200 | 300 | 110 | | 32 | 200 | 220 | 300 | 110 | | 40 | 220 | 240 | 320 | 125 | | 50 | 250 | 270 | 320 | 125 | | 65 | 280 | 300 | 325 | 130 | | 80 | 310 | 330 | 365 | 160 | | 100 | 350 | 380 | 365 | 170 | | 125 | 400 | 450 | 475 | 200 | | 150 | 450 | 500 | 475 | 210 | | 200 | 500 | 550 | 515 | 240 | | 250 | 650 | 560 | 290 | | 300 | 800 | 705 | 335 | | 350 | 850 | 745 | 375 | | 400 | 900 | 780 | 405 | | 450 | 900 | 730 | 455 | | 500 | 950 | 835 | 465 |
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