H41Y-25I-DN15,H41Y-25I-DN20,H41Y-25I-DN25,H41Y-25I-DN32,H41Y-25I-DN40,H41Y-25I-DN50,H41Y-25I-DN65,H41Y-25I-DN80,H41Y-25I-DN100,H41Y-25I-DN125,H41Y-25I-DN150,H41Y-25I-DN200,H41Y-40I-DN15,H41Y-40I-DN20,H41Y-40I-DN25,
H41Y-40I-DN32,H41Y-40I-DN40,H41Y-40I-DN50,H41Y-40I-DN65,H41Y-40I-DN80,H41Y-40I-DN100,H41Y-40I-DN125,H41Y-40I-DN150,H41Y-40I-DN200,H41Y-64I-DN15,
H41Y-64I-DN20,H41Y-64I-DN25,H41Y-64I-DN32,H41Y-64I-DN40,H41Y-64I-DN50,H41Y-64I-DN65,H41Y-64I-DN80,H41Y-64I-DN100,H41Y-64I-DN125,H41Y-64I-DN150,
H41Y-64I-DN200,H41Y-100I-DN15,H41Y-100I-DN20,H41Y-100I-DN25,H41Y-100I-DN32,H41Y-100I-DN40,H41Y-100I-DN50,H41Y-100I-DN65,H41Y-100I-DN80,H41Y-100I-DN100,
H41Y-100I-DN125,H41Y-100I-DN150,H41Y-100I-DN200,H41Y-25P-DN15,H41Y-25P-DN20,H41Y-25P-DN25,H41Y-25P-DN32,H41Y-25P-DN40,H41Y-25P-DN50,H41Y-25P-DN65,
H41Y-25P-DN80,H41Y-25P-DN100,H41Y-25P-DN125,H41Y-25P-DN150,H41Y-25P-DN200,H41Y-40P-DN15,H41Y-40P-DN20,H41Y-40P-DN25,H41Y-40P-DN32,H41Y-40P-DN40,
H41Y-40P-DN50,H41Y-40P-DN65,H41Y-40P-DN80,H41Y-40P-DN100,H41Y-40P-DN125,H41Y-40P-DN150,H41Y-40P-DN200,H41Y-64P-DN15,H41Y-64P-DN20,H41Y-64P-DN25,
H41Y-64P-DN32,H41Y-64P-DN40,H41Y-64P-DN50,H41Y-64P-DN65,H41Y-64P-DN80,H41Y-64P-DN100,H41Y-64P-DN125,H41Y-64P-DN150,H41Y-64P-DN200,H41Y-100P-DN15,
H41Y-100P-DN20,H41Y-100P-DN25,H41Y-100P-DN32,H41Y-100P-DN40,H41Y-100P-DN50,H41Y-100P-DN65,H41Y-100P-DN80,H41Y-100P-DN100,H41Y-100P-DN125,
H41Y-100P-DN150,H41Y-100P-DN200,高温高压止回阀
止回阀：止回阀又称单向阀或逆止阀，其作用是防止管路中的介质倒流。水泵吸水关的底阀也属于止回阀类。
启闭件靠介质流动和力量自行开启或关闭，以防止介质倒流的阀门叫止回阀。止回阀属于自动阀类，主要用于介质单向流动的管道上，只允许介质向一个方向流动，以防止发生事故。
止回阀按结构划分，可分为升降式止回阀、旋启式止回阀和蝶式止回阀三种。升降式止回阀可分为立式和卧式两种。旋启式止回阀分为单瓣式、双瓣式和多瓣式三种。蝶式止回阀为直通式、以上几种止回阀在连接形式上可分为螺纹连接、法兰连接和焊接三种。
型号 | 公称压力PN(Mpa) | 试验压力Ps(Mpa) | 适用温度(oc) | 适用介质 |
密度 | 气密封 | 壳体 |
H41Y-25I | 2.5 | 2.75 | 0.6 | 3.75 | ≤550 | 蒸汽、水、油品等 |
H41Y-40I | 4.0 | 4.4 | 0.6 | 6.0 |
H41Y-64I | 6.4 | 7.04 | 0.6 | 9.6 |
H41Y-100I | 10.0 | 11.0 | 0.6 | 15.0 |
H41Y-25P | 2.5 | 2.75 | 0.6 | 3.75 | ≤150 | 弱腐蚀性介质 |
H41Y-40P | 4.0 | 4.4 | 0.6 | 6.0 |
H41Y-64P | 6.4 | 7.04 | 0.6 | 9.6 |
H41Y-100P | 10.0 | 11.0 | 0.6 | 15.0 |
主要零件材料
零件 | 阀门、阀盖、阀瓣 | 阀体、阀瓣密封面 | 垫片 | 螺栓 |
材料 | I | 铬钼钢 | 硬质合金 | 钢带石棉缠绕式垫片 | 铬钼钒钢 |
P | 铬钼钛不锈钢 | 硬质合金 | 聚四氟乙烯 | 不锈钢 |
主要尺寸及重量
公称通径DN（mm） | 尺寸(mm) | 重量(kg) |
L | D | D1 | D2 | ·b | f | Z –φd | H | D3 |
15 | 130 | 95 | 65 | 45 | 16 | 2 | 4-φ14 | 100 | - | 5 |
20 | 150 | 105 | 75 | 55 | 16 | 2 | 4 –φ14 | 105 | - | 7 |
25 | 160 | 115 | 85 | 65 | 16 | 2 | 4 –φ14 | 115 | 110 | 9 |
32 | 190 | 135 | 100 | 78 | 18 | 2 | 4 –φ18 | 120 | 120 | 10 |
40 | 200 | 145 | 110 | 85 | 18 | 3 | 4-φ18 | 140 | 135 | 15 |
50 | 230 | 160 | 125 | 100 | 20 | 3 | 4-φ18 | 150 | 150 | 20 |
65 | 290 | 180 | 145 | 120 | 22 | 3 | 8-φ18 | 160 | 175 | 25 |
80 | 310 | 195 | 160 | 135 | 22 | 3 | 8-φ18 | 175 | 200 | 32 |
100 | 350 | 230 | 190 | 160 | 24 | 3 | 8-φ23 | 200 | 230 | 57 |
125 | 400 | 270 | 220 | 188 | 28 | 3 | 8-φ25 | 230 | 273 | - |
150 | 480 | 300 | 250 | 218 | 30 | 3 | 8-φ25 | 265 | 330 | - |
200 | 600 | 360 | 310 | 278 | 34 | 3 | 12-φ25 | 300 | 365 | - |
