公称压力(PN)
|
试验压力(Ps)
|
进口压力(P1)
|
出口压力(P2)
|
最小压差(△P)
|
背压(PB)
|
压力特性(△P2P1)
|
流量特性(△P2G2)
|
1.6MPa
|
2.4MPa
|
<1.6MPa
|
0.1~1.0MPa
|
0.2MPa
|
≤1.5MPa
|
P2×10%
|
P2×20%
|
2.5MPa
|
3.75MPa
|
<2.5MPa
|
0.2~1.6MPa
|
0.2MPa
|
≤2.5MPa
|
P2×10%
|
P2×20%
|
4.0MPa
|
6.0MPa
|
<4.0MPa
|
0.3~2.5MPa
|
0.2MPa
|
≤2.5MPa
|
P2×10%
|
P2×20%
|
6.4MPa
|
9.6MPa
|
<6.4MPa
|
0.5~3.0MPa
|
0.25MPa
|
≤4MPa
|
P2×12%
|
P2×20%
|
不锈钢减压阀流量系数表:
DN
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
350
|
400
|
500
|
Cv
|
1
|
2.5
|
4
|
6.5
|
9
|
16
|
25
|
36
|
64
|
100
|
140
|
250
|
400
|
570
|
780
|
1020
|
1500
|