YK43XF-1.6-DN15,YK43XF-1.6-DN20,YK43XF-1.6-DN25,YK43XF-1.6-DN32,YK43XF-1.6-DN40,YK43XF-1.6-DN50,YK43XF-1.6-DN65,YK43XF-1.6-DN80,YK43XF-1.6-DN100,YK43XF-1.6-DN125,YK43XF-1.6-DN150,
YK43XF-1.6-DN200,YK43XF-1.6-DN250YK43XF-1.6-DN300,,YK43XF-1.6-DN350,YK43XF-1.6-DN400,YK43XF-1.6-DN450,
YK43XF-1.6-DN500,YK43XF-2.5-DN15,YK43XF-2.5-DN20,YK43XF-2.5-DN25,YK43XF-2.5-DN32,YK43XF-2.5-DN40,YK43XF-2.5-DN50,
YK43XF-2.5-DN65,YK43XF-2.5-DN80,YK43XF-2.5-DN100,YK43XF-2.5-DN125,YK43XF-2.5-DN150,YK43XF-2.5-DN200,
YK43XF-2.5-DN250YK43XF-2.5-DN300,YK43XF-2.5-DN350,YK43XF-2.5-DN400,YK43XF-2.5-DN450,YK43XF-2.5-DN500,
YK43XF-4.0-DN15,YK43XF-4.0-DN20,YK43XF-4.0-DN25,YK43XF-4.0-DN32,YK43XF-4.0-DN40,YK43XF-4.0-DN50,YK43XF-4.0-DN65,
YK43XF-4.0-DN80,YK43XF-4.0-DN100,YK43XF-4.0-DN125,YK43XF-4.0-DN150,YK43XF-4.0-DN200,YK43XF-4.0-DN250,
YK43XF-4.0-DN300,,YK43XF-4.0-DN350,YK43XF-4.0-DN400,YK43XF-4.0-DN450,YK43XF-4.0-DN500,YK43XF-6.4-DN15,
YK43XF-6.4-DN20,YK43XF-6.4-DN25,YK43XF-6.4-DN32,YK43XF-6.4-DN40,YK43XF-6.4-DN50,YK43XF-6.4-DN65,YK43XF-6.4-DN80,
YK43XF-6.4-DN100,YK43XF-6.4-DN125,YK43XF-6.4-DN150,YK43XF-6.4-DN200,YK43XF-6.4-DN250,YK43XF-6.4-DN300,
YK43XF-6.4-DN350,YK43XF-6.4-DN400,YK43XF-6.4-DN450,YK43XF-6.4-DN500,YK43XF-10-DN15,YK43XF-10-DN20,YK43XF-10-DN25,
YK43XF-10-DN32,YK43XF-10-DN40,YK43XF-10-DN50,YK43XF-10-DN65,YK43XF-10-DN80,YK43XF-10-DN100,YK43XF-10-DN125,
YK43XF-10-DN150,YK43XF-10-DN200,YK43XF-10-DN250,YK43XF-10-DN300,YK43XF-10-DN350,YK43XF-10-DN400,YK43XF-10-DN450,
YK43XF-10-DN500,YK43XF-16-DN15,YK43XF-16-DN20,YK43XF-16-DN25,YK43XF-16-DN32,YK43XF-16-DN40,YK43XF-16-DN50,
YK43XF-16-DN65,YK43XF-16-DN80,YK43XF-16-DN100,YK43XF-16-DN125,YK43XF-16-DN150,YK43XF-16-DN200,YK43XF-16-DN250,
YK43XF-16-DN300,YK43XF-16-DN350,YK43XF-16-DN400,YK43XF-16-DN450,YK43XF-16-DN500,气体减压阀
YK43XF气体减压阀概述：
YK43XF气体减压阀主要由主阀和导阀两大部件组成。适用于工作温度低于80℃的空气、液化气、氧气等气体管路上。使用时旋转调节螺杆，顶开导阀盘，介质由阀前导管通过导阀腔进入主阀上盖，促使介质压力推动活塞，使主阀盘开启，介质流向阀后，同时由阀后压力进入导阀直接传递并作用于膜片下方与膜片上方压力保持**平衡状态，达到减压目的。气体减压阀属于先导活塞式减压阀。由主阀和导阀两部分组成。主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。导阀主要由阀座、阀瓣、膜片、弹簧、调节弹簧等零件组成。通过调节调节弹簧压力设定出口压力、利用膜片传感出口压力变化，通过导阀启闭驱动活塞调节主阀节流部位过流面积的大小，实现减压稳压功能。 气体减压阀主要用于气体管路，如空气减压阀、氮气减压阀、氧气减压阀、氢气减压阀、液化气减压阀、天然气减压阀等气体。 
YK43XF气体减压阀主要技术参数
型号 | YK43X-16Q | YK43X-25 | YK43X-40 | YK43X-64 |
公称压力 | 1.6 | 2.5 | 4.0 | 1.6 |
壳体试验压力 | 2.4 | 3.8 | 6 | 2.4 |
出口压力 | ≤1.6 | 2.5 | 4 | ≤1.6 |
适用介质 | 空气、液化气、氧气 |
介质温度 | ≤70℃ |
压力特性偏差 | 稳定流动状态下、当流量等参数不变时，进口压力在080~105%的较高压力（工作）范围内变化，其出口压力的偏差值4P1≤±P1 |
流量特性偏差 | 稳定流动状态下，当进口压力等参数不变时，流量在20~100%的较大流量范围内变化，其出口压力的偏差值4P1≤-10%P2 |
静态特性偏差 | 稳定流动状态下，当进口压力和流量等参数的变化，所引起出口压力的变化，其值4P1≤-10%P2 |
| 公称压力（Mpa） | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 壳体试验压力（Mpa）* | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 | 24 |
| 密封试验压力（Mpa） | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 较高进口压力（Mpa） | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| 出口压力范围（Mpa） | 0.1-1.0 | 0.1-1.6 | 0.1-2.5 | 0.5-3.5 | 0.5-3.5 | 0.5-4.5 |
| 压力特性偏差（Mpa）△P2P | GB12246-1989 |
| 流量特性偏差（Mpa）P2G | GB12246-1989 |
| 最小压差（Mpa） | 0.15 | 0.15 | 0.2 | 0.4 | 0.8 | 1.0 |
| 渗漏量 | X/F（聚四氟乙稀/橡胶）：O Y（硬密封）：GB12245-1989 |
YK43XF气体减压阀连接尺寸： | 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 |
