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Nominal diameter DN(mm) |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 | ||||
Rated flow coefficient Kv |
7 |
11 |
20 |
30 |
48 |
75 |
120 |
190 |
300 |
480 |
760 |
1100 |
1750 | ||||
Rated travel L(mm) |
8 |
10 |
14 |
20 |
25 |
40 |
50 |
60 |
70 | ||||||||
Nominal pressure PN(MPa) |
1.6、4.0 | ||||||||||||||||
adjusting range of pressure (KPa) |
15~50、40~80、60~100、80~140、120~180、160~220、200~260、
240~300、280~350、330~400、380~450、430~500、480~560、540~620、 600~700、680~800、780~900、880~1000、600~1500、1000~2500 | ||||||||||||||||
Inherent flow characteristics |
Quick open | ||||||||||||||||
adjusting accuracy (%) |
±5 | ||||||||||||||||
using temperature (℃) |
≤350 | ||||||||||||||||
Allowed leakage
|
Hard sealing
(1/h) |
Single seat
:≤10-4× rated capacity (Ⅳ)、 Seat and sleeve :≤5×10-3 rated capacity (Ⅱ) | |||||||||||||||
Soft sealing
(m1/min) |
0.15 |
0.30 |
0.45 |
0.60 |
0.90 |
1.70 |
4.0 |
6.75 |
11.10 |
16.0 | |||||||
Ratio of pressure reducing
|
max |
10 | |||||||||||||||
min |
1.25 |