Pneumatic small flow control valve for dropping reaction processing
Pneumatic small flow control valve for dropping reaction processing
Small flow pneumatic control valve is designed for micro flow medium .The compact body ofLow flow pneumatic control valve has an S-shape flow passage that features low pressure loss, allows a large flowcapacity,rangeability, and high accuracy flow characteristics.
Small flow pneumatic control valve plugs are available in wide range of Cv values. The flow shut-off performance complies with the IEC or JIS standards. The actuator integrated with simplest mechanisms utilizes a compact yet powerful diaphragm actuator leaded with multiple springs.
Small flow pneumatic control valve is widely applicable for reliable control of small flows in high or low temperature, high pressure process lines.
Feature：
1. Top -bottom guided double seat control valve valve seat, good stability
2. The pneumatic linear actuator consists of a diaphragm housing
3. Large adjustable range, Inherent adjustable ratio 50
4.With Insulation jacket
5.control valve type: Single-seated type ,Sleeve type, double-seat type, 3-way type.
6.Actuator Accessories
- Top-fitted handwheel for emergency operation
- Positioner
- Limit switches
Main technical specification
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Nominal Diameter(mm) |
20、25 |
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Valve seat diameter Gg(mm) |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
12 |
15 |
20 |
25 |
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Rated flow coefficient Kv（Liner) |
0.04 |
0.08 |
0.12 |
0.2 |
0.32 |
0.5 |
0.8 |
1.0 |
1.2 |
2 |
4.4 |
6.9 |
11 |
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Rated Stroke L(mm) |
10 |
16 |
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Diaphragm Effective Area(cm²） |
200/280/400 |
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Spring Range Pr(Kpa) |
20~100、40~200、80~240(20~60、60~100） |
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Gas source pressure(Mpa) |
0.14、0.25、0.30 |
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Inherent flow Characteristics |
Equal percentage、Liner |
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Leakage class |
Metal valve plug:VI Class(Micro air bubble level） |
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Nominal Pressure PN(MPa) |
Mpa |
1.6,2.5,4.0,6.4(6.3)/2.0,5.0,11.0 |
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Bar |
16,25,40,64(63)/20,50,110 |
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Lb |
ANSI:Class150、Class300、Class600 |
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Upper bonnet form |
Room temperature |
-20~200、-40~250、-60~250 |
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The cooling type |
-40~350、-60~350 |
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High temperature |
350~595(high-temperature material) |
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Cryogenic |
-60~-100、-100~-200、-200~-250 |
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Regulating cut off type |
-40~150(Valve plug with PTFE) -60~200(Valve plug with reinforce PTFE) |
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