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Nominal diameter mm |
20 |
25 |
40 |
50 |
65 |
80 |
100 |
150 |
200 |
250 |
300 |
350 |
400 |
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Diameter of valve seat mm |
10 |
12 |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
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Rated flow coefficient Kv |
Straight line |
1.8 |
2.8 |
4.4 |
6.9 |
11 |
17.6 |
27.5 |
44 |
69 |
110 |
176 |
275 |
440 |
690 |
1000 |
1600 |
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Equal percentage |
1.6 |
2.5 |
4 |
6.3 |
10 |
16 |
25 |
40 |
63 |
100 |
160 |
250 |
400 |
630 |
900 |
1440 |
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Nominal pressure MPa |
0.61.64.06.4 |
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Travel mm |
10 |
16 |
25 |
40 |
60 |
100 |
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Flow characteristics |
Straight line,equal percentage ,quick open |
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Media temperature ℃ |
-15～200(normal temperature ),-40～+250,-40～+450(medium temperature ),-100～+200(low temperature ) |
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Flange size |
Cast iron flange size JB78,cast steel flange size JB79 |
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Flange size |
Sealing surface of flange JB77,cast iron flange is smooth, cast steel flange is concave |
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Material of valve body |
PN |
0.6,1.6 |
HT200,WCB(ZG230-450) |
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4.0,6.4 |
WCB(ZG230-450),ZG1Cr18Ni9Ti,ZG0Cr18Ni12Mo2Ti |
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Material of valve spool |
1Cr18Ni9,0Cr18Ni12Mo2Ti |
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Upper cover |
General (normal temperature ),heat sink(medium temperature),low temperature |
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Adjustable ratio R |
50:1 |
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Connector of air supply |
M16×1.5 |
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