【对夹升降式止回阀产品概述】
H71H(W)对夹升降式止回阀由阀体、阀瓣、弹簧等组成，水平安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；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.
【对夹升降式止回阀结构特点】
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
【对夹升降式止回阀的型号、材料及主要参数】
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配管法兰
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公称压力
|
常规产品型号
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JB/T 74
~90、
GB/T 9112
~9124、
HG 20592
~20614
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PN1.0MPa
|
H71H-10C
|
H71W-10P
|
H71W-10P8
|
H71W-10P3
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H71W-10R
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H71W-10R8
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H71W-10R3
|
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PN1.6MPa
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H71W-16C
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H71W-16P
|
H71W-16P8
|
H71W-16P3
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H71W-16R
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H71W-16R8
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H71W-16R3
|
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PN2.5MPa
|
H71W-25
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H71W-25P
|
H71W-25P8
|
H71W-25P3
|
H71W-25R
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H71W-25R8
|
H71W-25R3
|
|
PN4.0MPa
|
H71W-40
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H71W-40P
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H71W-40P8
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H71W-40P3
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H71W-40R
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H71W-40R8
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H71W-40R3
|
|
PN6.3MPa
|
H71W-63
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H71W-63P
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H71W-63P8
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H71W-63P3
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H71W-63R
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H71W-63R8
|
H71W-63R3
|
|
PN10.0MPa
|
H71W-100
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H71W-100P
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H71W-100P8
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H71W-100P3
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H71W-100R
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H71W-100R8
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H71W-100R3
|
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PN16.0MPa
|
H71W-160
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H71W-160P
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H71W-160P8
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H71W-160P3
|
H71W-160R
|
H71W-160R8
|
H71W-160R3
|
GB/T 9112
~9124、
HG 20615
~20635、
SH 3406
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PN2.0MPa
|
H71H-20C
|
—
|
H71W-20P8
|
H71W-20P3
|
—
|
H71W-20R8
|
H71W-20R3
|
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PN5.0MPa
|
H71H-50
|
—
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H71W-50P8
|
H71W-50P3
|
—
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H71W-50R8
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H71W-50R3
|
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PN11.0MPa
|
H71H-110
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—
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H71W-110P8
|
H71W-110P3
|
—
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H71W-110R8
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H71W-110R3
|
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PN15.0MPa
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H71H-150
|
—
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H71W-150P8
|
H71W-150P3
|
—
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H71W-150R8
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H71W-150R3
|
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ANSI B 16.5
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Class150
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H71H-A1C
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—
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H71W-A1P8
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H71W-A1P3
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—
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H71W-A1R8
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H71W-A1R3
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Class300
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H71H-A3
|
—
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H71W-A3P8
|
H71W-A3P3
|
—
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H71W-A3R8
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H71W-A3R3
|
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Class600
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H71H-A6
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—
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H71W-A6P8
|
H71W-A6P3
|
—
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H71W-A6R8
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H71W-A6R3
|
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Class900
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H71H-A9
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—
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H71W-A9P8
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H71W-A9P3
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—
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H71W-A9R8
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H71W-A9R3
|
|
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阀体
|
WCB(A105)
|
ZG1Cr18Ni9Ti
|
CF8(304)
|
CF3(304L)
|
ZG1Cr18Ni12Mo2Ti
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CF8M(316)
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CF3M(316L)
|
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阀瓣
|
2Cr13
|
1Cr18Ni9Ti
|
0Cr18Ni9
|
00Cr19Ni10
|
1Cr18Ni12Mo2Ti
|
0Cr17Ni12Mo2
|
00Cr17Ni14Mo2
|
|
压圈
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2Cr13
|
1Cr18Ni9Ti
|
0Cr18Ni9
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00Cr19Ni10
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1Cr18Ni12Mo2Ti
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0Cr17Ni12Mo2
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00Cr17Ni14Mo2
|
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弹簧
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0Cr18Ni9
|
0Cr18Ni9
|
0Cr18Ni9
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00Cr19Ni10
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0Cr17Ni12Mo2
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0Cr17Ni12Mo2
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00Cr17Ni14Mo2
|
|
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适用介质
|
水、蒸汽、油品等
|
硝酸等腐蚀性介质
|
强氧化性介质
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醋酸等腐蚀性介质
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尿素等腐蚀性介质
|
|
适用温度(℃)
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-29~425
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-196~540
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-196~425
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-196~540
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-196~455
|
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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。
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【对夹升降式止回阀解剖图】
【对夹升降式止回阀产品连接尺寸】
