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上海正钢阀门制造有限公司
主营产品： 高温高压安全阀,弹簧式安全阀,波纹管安全阀,全启式安全阀,微启式安全阀 |
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上海正钢阀门制造有限公司
主营产品： 高温高压安全阀,弹簧式安全阀,波纹管安全阀,全启式安全阀,微启式安全阀 |
| 参考价 | 面议 |
【美标对夹式止回阀,不锈钢对夹式止回阀概述】
H71H(W)美标对夹式止回阀由阀体、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、重量轻；
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。
【美标对夹式止回阀结构图】
【美标对夹式止回阀,不锈钢对夹式止回阀号、材料及主要参数】
配管法兰 | 公称压力 | 常规产品型号 | ||||||
JB/T 74 | PN1.0MPa | H71H-10C | H71W-10P | H71W-10P8 | H71W-10P3 | H71W-10R | H71W-10R8 | H71W-10R3 |
PN1.6MPa | H71W-16C | H71W-16P | H71W-16P8 | H71W-16P3 | H71W-16R | H71W-16R8 | H71W-16R3 | |
PN2.5MPa | H71W-25 | H71W-25P | H71W-25P8 | H71W-25P3 | H71W-25R | H71W-25R8 | H71W-25R3 | |
PN4.0MPa | H71W-40 | H71W-40P | H71W-40P8 | H71W-40P3 | H71W-40R | H71W-40R8 | H71W-40R3 | |
PN6.3MPa | H71W-63 | H71W-63P | H71W-63P8 | H71W-63P3 | H71W-63R | H71W-63R8 | H71W-63R3 | |
PN10.0MPa | H71W-100 | H71W-100P | H71W-100P8 | H71W-100P3 | H71W-100R | H71W-100R8 | H71W-100R3 | |
PN16.0MPa | H71W-160 | H71W-160P | H71W-160P8 | H71W-160P3 | H71W-160R | H71W-160R8 | H71W-160R3 | |
GB/T 9112 | PN2.0MPa | H71H-20C | — | H71W-20P8 | H71W-20P3 | — | H71W-20R8 | H71W-20R3 |
PN5.0MPa | H71H-50 | — | H71W-50P8 | H71W-50P3 | — | H71W-50R8 | H71W-50R3 | |
PN11.0MPa | H71H-110 | — | H71W-110P8 | H71W-110P3 | — | H71W-110R8 | H71W-110R3 | |
PN15.0MPa | H71H-150 | — | H71W-150P8 | H71W-150P3 | — | H71W-150R8 | H71W-150R3 | |
ANSI B 16.5 | Class150 | H71H-A1C | — | H71W-A1P8 | H71W-A1P3 | — | H71W-A1R8 | H71W-A1R3 |
Class300 | H71H-A3 | — | H71W-A3P8 | H71W-A3P3 | — | H71W-A3R8 | H71W-A3R3 | |
Class600 | H71H-A6 | — | H71W-A6P8 | H71W-A6P3 | — | H71W-A6R8 | H71W-A6R3 | |
Class900 | H71H-A9 | — | H71W-A9P8 | H71W-A9P3 | — | H71W-A9R8 | H71W-A9R3 | |
主 要 | 阀体 | WCB(A105) | ZG1Cr18Ni9Ti | CF8(304) | CF3(304L) | ZG1Cr18Ni12Mo2Ti | CF8M(316) | CF3M(316L) |
阀瓣 | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni9 | 00Cr19Ni10 | 1Cr18Ni12Mo2Ti | 0Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | |
压圈 | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni9 | 00Cr19Ni10 | 1Cr18Ni12Mo2Ti | 0Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | |
弹簧 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 | 00Cr19Ni10 | 0Cr17Ni12Mo2 | 0Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | |
适 用 | 适用介质 | 水、蒸汽、油品等 | 腐蚀性介质 | 强氧化性介质 | 腐蚀性介质 | 尿素等腐蚀性介质 | ||
适用温度(℃) | -29~425 | -196~540 | -196~425 | -196~540 | -196~455 | |||
注：本表为常规对夹式止回阀的型号编制、主要零件材料及适用工况，其他要求及其型号编制参见对夹止回阀型号编制方法。 | ||||||||
【美标对夹式止回阀主要连接尺寸】
压力级 | 口径 | 尺寸(mm) | 重量 | 配管法兰(供参考) | |||||||||
NPS | DN | L | D | D2 | D3 | D4 | 螺栓孔中心 | 螺栓 | 螺栓直径d | 螺栓长 | |||
in | mm | ||||||||||||
Class | 1/2 | 15 | 16 | 46 | 15 | 25 | 25 | 0.28 | 60.5 | 4 | 1/2 | M14 | 75 |
3/4 | 20 | 19 | 56 | 19 | 30 | 30 | 0.42 | 70 | 4 | 1/2 | M14 | 90 | |
1 | 25 | 22 | 65 | 24 | 36 | 36 | 0.56 | 79.5 | 4 | 1/2 | M14 | 90 | |
11/4 | 32 | 28 | 74 | 31 | 43 | 43 | 0.75 | 89 | 4 | 1/2 | M14 | 100 | |
11/2 | 40 | 31.5 | 84 | 39 | 52 | 52 | 1.3 | 98.5 | 4 | 1/2 | M14 | 105 | |
2 | 50 | 40 | 103 | 48 | 62 | 62 | 2.1 | 120.5 | 4 | 5/8 | M16 | 125 | |
21/2 | 65 | 46 | 122 | 62 | 75 | 75 | 2.8 | 139.5 | 4 | 5/8 | M16 | 130 | |
3 | 80 | 50 | 135 | 76 | 90 | 90 | 3.6 | 152.5 | 4 | 5/8 | M16 | 135 | |
4 | 100 | 60 | 173 | 95 | 112 | 112 | 4.8 | 190.5 | 8 | 5/8 | M16 | 150 | |
5 | 125 | 90 | 195 | 110 | 125 | 132 | 12 | 216.0 | 8 | 3/4 | M20 | 180 | |
6 | 150 | 106 | 220 | 127 | 150 | 158 | 17 | 241.5 | 8 | 3/4 | M20 | 210 | |
8 | 200 | 140 | 277 | 165 | 200 | 208 | 29 | 298.5 | 8 | 3/4 | M20 | 240 | |
压力级 | 口径 | 尺寸(mm) | 重量 | 配管法兰(供参考) | ||||||||||
NPS | DN | L | D | D2 | D3 | D4 | 螺栓孔中心 | 螺栓 | 螺栓直径d | 螺栓长 | ||||
in | mm | RF | RJ | |||||||||||
CLass | 1/2 | 15 | 25 | 46 | 15 | 25 | 25 | 0.28 | 60.5 | 4 | 1/2 | M14 | 90 | — |
3/4 | 20 | 31.5 | 56 | 19 | 30 | 30 | 0.42 | 70 | 4 | 1/2 | M14 | 100 | — | |
1 | 25 | 35.5 | 65 | 24 | 36 | 36 | 0.56 | 79.5 | 4 | 1/2 | M14 | 105 | 120 | |
11/4 | 32 | 40 | 74 | 31 | 43 | 43 | 0.75 | 89 | 4 | 1/2 | M14 | 115 | 130 | |
11/2 | 40 | 45 | 84 | 39 | 52 | 52 | 1.3 | 98.5 | 4 | 1/2 | M14 | 120 | 135 | |
2 | 50 | 56 | 103 | 48 | 62 | 62 | 2.1 | 120.5 | 4 | 5/8 | M16 | 140 | 155 | |
21/2 | 65 | 63 | 122 | 62 | 75 | 75 | 2.8 | 139.5 | 4 | 5/8 | M16 | 155 | 170 | |
3 | 80 | 71 | 135 | 76 | 90 | 90 | 3.6 | 152.5 | 4 | 5/8 | M16 | 165 | 180 | |
4 | 100 | 80 | 173 | 95 | 112 | 112 | 4.8 | 190.5 | 8 | 5/8 | M16 | 175 | 190 | |
5 | 125 | 110 | 195 | 110 | 125 | 132 | 12 | 216.0 | 8 | 3/4 | M20 | 210 | 225 | |
6 | 150 | 125 | 220 | 127 | 150 | 158 | 17 | 241.5 | 8 | 3/4 | M20 | 230 | 245 | |
8 | 200 | 160 | 277 | 165 | 200 | 208 | 29 | 298.5 | 8 | 3/4 | M20 | 270 | 285 | |
CLass | 1/2 | 15 | 25 | 52 | 15 | 25 | 25 | 0.3 | 66.5 | 4 | 1/2 | M14 | 95 | 105 |
3/4 | 20 | 31.5 | 65 | 19 | 30 | 30 | 0.46 | 82.5 | 4 | 5/8 | M16 | 110 | 125 | |
1 | 25 | 35.5 | 72 | 24 | 36 | 36 | 0.6 | 89 | 4 | 5/8 | M16 | 115 | 130 | |
11/4 | 32 | 40 | 81 | 31 | 43 | 43 | 0.8 | 98.5 | 4 | 5/8 | M16 | 125 | 140 | |
11/2 | 40 | 45 | 94 | 39 | 52 | 52 | 1.5 | 114.5 | 4 | 3/4 | M20 | 140 | 155 | |
2 | 50 | 56 | 110 | 48 | 62 | 62 | 2.4 | 127.0 | 8 | 5/8 | M16 | 145 | 170 | |
【流体阻力系数、流量系数及开启压力】
水的当量体积流量Vw与实际流体的体积流量V按下式换算： 式中：Vw－水的当量体积流量，1/S； ρ－流体密度，kg/m3； V－实际流体的体积流量，1/S。 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
流体力学性能·H71美标对夹式止回阀的流体阻力系数
【美标对夹式止回阀结构特点】 1、结构长度短，其结构长度只有传统法兰止回阀的1/4~1/8 2、体积小、重量轻、其重量只有传统法兰止回阀的1/4~1/20 3、阀瓣关闭快速，水锤压力小 4、水平管道使用，安装方便 5、流道通畅、流体阻力小 6、动作灵敏、密封性能好 7、阀瓣行程短、关阀冲击力小 8、整体结构、简单紧凑、造型美观 9、使用寿命长、可靠性高 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
