公司名称：温州康豪阀门有限公司

、一、流体力学性能：H71对夹双瓣旋启式止回阀的流体阻力系数、流量系数及开启压力：
公称通径
阀门全开启时的流体阻力系数
常温下阀门全开启时的水讲E量系数
流体的流向
DN
NPS
Kv(m3=／h)
CV(U.S)
CV(U.K)
↑
↓
→
开启压力近似值KPa
15
1/2
6.4
2.6
3.0
2.5
3
2
2.5
20
3/4
5.1
6.4
7.5
6.3
3
2
2.5
25
4
4.1
12.6
14.8
12.3
3
2
2.5
32
11/4
4.1
19.7
23.1
19.3
3
2
2.5
40
11/2
3.8
29.5
63.9
28.9
3
2
2.5
50
2
3.5
54.6
99.9
63.5
3
2
2.5
65
21/2
3.5
85.4
150
83.7
3
2
2.5
80
3
3.2
128
286
125
3
2
2.5
100
4
2.8
244
286
249
3
2
2.5
125
5
2.9
375
439
368
3
1
2.2
150
6
3.1
522
611
512
3
1
2.2
200
8
3.2
915
1070
897
3
1
2.2
二、对夹升降式止回阀的型号、材料及主要参数：
配管法兰
公称压力
常规产品型号
JB/T74-90
GB9112-9124、HG20592-20614
PN1.0MPa
H71H-10C
H71W10P
H71W10P8
H71W10P3
H71W10R
H71W10R8
H71W10R3
PN1.6MPa
H71H-16C
H71H-16P
H71H-16P8
H71H-16P3
H71H-16R
H71H-16R8
H71H-16R3
PN2.5MPa
H71H-25
H71H-25P
H71H-25P8
H71H-25P3
H71H-25R
H71H-25R8
H71H-25R3
PN4.0MPa
H71H-40
H71H-40P
H71H-40P8
H71H-40P3
H71H-40R
H71H-40R8
H71H-40R3
PN6.3MPa
H71H-63
H71H-63P
H71H-63P8
H71H-63P3
H71H-63R
H71H-63R8
H71H-63R3
PN10.0MPa
H71H-100
H71H-100P
H71H-100P8
H71H-100P3
H71H-100R
H71H-100R8
H71H-100R3
PN16.0MPa
H71H-160
H71H-160P
H71H-160P8
H71H-160P3
H71H-160R
H71H-160R8
H71H-160R3
CB/T9112-9124、HG20615-20635、SH3406
PN2.0MPa
H71H-20C
-
H71H-20P8
H71H-20P3
-
H71H-20R8
H71H-20R3
PN5.0MPa
H71H-50
-
H71H-50P8
H71H-50P3
-
H71H-50R8