HTSW Bellows Control Valve Product Overview
HTSW bellows sealed single-seat control valve belongs to CV3000 series of control valve products. The valve core adopts an upper-guided single-seat plunger structure, and the upper bonnet adopts a bellows sealing structure to prevent the medium in the pipeline from leaking from the valve stem and packing seal. . The bellows are made of high-quality stainless steel, which is anti-corrosion and has a long service life. The packing will age and wear over time, and it forms a double seal with the bellows, which greatly improves the reliability. The flow channel of the valve body is S-shaped, with small flow resistance and large flow. Especially suitable for strong corrosive, toxic and radioactive media. Assembled with ZHA multi-spring membrane actuator, the structure is compact and the output force is large.
HTSW Bellows Control Valve Features
1 Single-seat plunger type valve core, small leakage, and small allowable pressure difference.
2. The adjustment mechanism can be equipped with a straight-stroke electric actuator to form electric bellows sealed single-seat control valve.
3. The bellows and packing are double sealed to effectively prevent the leakage of the medium.
HTSW Bellows Control Valve Main Technical Parameters
|
Nominal diameter |
40 |
50 |
65 |
80 |
100 |
150 |
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Seat Diameter |
25 |
32 |
40 |
32 |
40 |
50 |
40 |
50 |
65 |
50 |
65 |
80 |
65 |
80 |
100 |
100 |
125 |
150 |
|
High precision valve core |
10 |
14 |
24 |
17 |
24 |
44 |
24 |
44 |
68 |
44 |
68 |
69 |
68 |
99 |
175 |
175 |
275 |
360 |
|
High capacity valve core |
|
|
30 |
|
|
50 |
|
|
85 |
|
|
125 |
|
|
200 |
|
|
420 |
|
Quick open valve core |
|
|
35 |
|
|
55 |
|
|
95 |
|
|
135 |
|
|
220 |
|
|
460 |
|
Nominal pressure Mpa |
1.6， 2.5， 4.0， 6.4 |
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stroke mm |
25 |
38 |
50 |
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Stroke, quick opening mm |
10 |
13 |
19 |
25 |
30 |
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|
Flow characteristics |
straight line, equal percentage |
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Operating temperature |
Normal temperature (-40～230℃), medium temperature (-40～450℃), high temperature (-40～550℃), low temperature (-40～-196℃) |
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flange standard |
JB79，HG20592，GB，ANSI，JIS，DIN |
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Adjustable ratio |
50:1 |
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leak level |
Metal hard seal grade Ⅳ, PTFE soft seal grade Ⅵ |
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Main technical parameters of HA multi-spring pneumatic diaphragm actuator
|
Model |
HA1D（R） |
HA2D（R） |
HA3D（R） |
HA4D（R） |
|
Effective area cm2 |
160 |
310 |
550 |
950 |
|
stroke mm |
14.3,25 |
14.3,25,38 |
14.3,25,38,40,50 |
14.3,25,38,40,50,60,75 |
|
Spring range Kpa |
20-100, 40-200, 80-240, 20-60, 60-100 |
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|
Air source pressure Mpa |
0.1-0.4 |
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Air supply connector |
RC1/4 |
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Pneumatic control valve Main parts material
|
Part Name |
Part material |
|
valve body, bonnet |
WCB，CF8（304），CF8M（316） |
|
valve core, valve stem, valve seat |
304, 316, 304 surfacing alloy, 316 surfacing alloy |
|
packing |
PTFE, flexible graphite |
|
sealing gasket |
Graphite Wound Gasket, Tooth Gasket |
|
Membrane cover |
A3 |
|
Diaphragm |
Ethylene propylene rubber sandwiched nylon fabric |
|
spring |
60Si2Mn |
|
Putting |
2Cr13 |
Pneumatic control valve performance index
|
project |
Index value |
project |
Index value |
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|
Basic Error% |
Without positioner |
±5.0 |
Start point end point deviation % |
air shut |
Without positioner |
start point |
±5.0 |
|
With positioner |
±1.0 |
end point |
±2.5 |
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|
Return difference % |
Without positioner |
≤3.0 |
With positioner |
start point |
±1.0 |
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|
With positioner |
≤1.0 |
end point |
±1.0 |
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Dead zone |
Without positioner |
≤3.0 |
air open |
Without positioner |
start point |
±2.5 |
|
|
With positioner |
≤0.4 |
end point |
±5.0 |
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|
Rated stroke deviation% |
±2.5 |
With positioner |
start point |
±1.0 |
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|
end point |
±1.0 |
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Allowable leakage L/h |
1×10-3 Valve rated capacity |
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HTSW bellows regulating valve Allowable differential pressure MPa
|
switching method |
Executive agency |
Spring range Kpa |
Air source pressure Kpa |
positioner |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
|
air shut |
HA2D |
20-100 |
140 |
yes or no |
0.31 |
0.19 |
0.13 |
0.08 |
0.05 |
0.03 |
0.02 |
|
|
|
|
20-100 |
160 |
yes |
1.58 |
0.96 |
0.68 |
0.39 |
0.25 |
0.17 |
0.10 |
|
|
|
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|
80-240 |
400 |
yes |
2.0 |
2.0 |
2.0 |
1.08 |
0.74 |
0.52 |
0.29 |
|
|
|
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|
4.7 |
2.8 |
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HA3D |
20-100 |
140 |
yes or no |
0.56 |
0.34 |
0.24 |
0.14 |
0.08 |
0.06 |
0.03 |
0.02 |
0.01 |
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|
20-100 |
160 |
yes |
2.0 |
1.71 |
1.21 |
0.07 |
0.44 |
0.31 |
0.17 |
0.11 |
0.07 |
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2.8 |
|
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80-240 |
400 |
yes |
2.0 |
2.0 |
2.0 |
2.0 |
1.32 |
0.98 |
0.52 |
0.33 |
0.20 |
|
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|
5.0 |
5.0 |
3.6 |
2.1 |
|
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HA4D |
20-100 |
140 |
yes or no |
|
|
0.41 |
0.24 |
0.15 |
1.11 |
0.06 |
0.03 |
0.02 |
0.01 |
|
|
20-100 |
160 |
yes |
|
|
2.0 |
1.21 |
0.76 |
0.53 |
0.3 |
0.19 |
0.12 |
0.07 |
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|
80-240 |
400 |
yes |
|
|
2.0 |
2.0 |
2.0 |
1.61 |
0.91 |
0.58 |
0.35 |
0.22 |
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5.0 |
3.6 |
2.25 |
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air open |
HA2R |
20-100 |
140 |
yes or no |
0.31 |
.019 |
0.13 |
0.08 |
0.05 |
0.03 |
0.02 |
|
|
|
|
80-240 |
280 |
yes |
2.0 |
1.35 |
0.7 |
0.55 |
0.34 |
0.24 |
0.14 |
|
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|
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|
2.2 |
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HA3R |
20-100 |
140 |
yes or no |
0.56 |
0.34 |
0.24 |
0.14 |
0.08 |
0.06 |
0.03 |
0.02 |
0.01 |
|
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|
80-240 |
280 |
yes |
2.0 |
2.0 |
1.7 |
0.98 |
0.61 |
0.43 |
0.24 |
0.15 |
0.09 |
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|
3.9 |
2.3 |
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HA4R |
20-100 |
140 |
yes or no |
|
|
0.29 |
0.17 |
0.10 |
0.07 |
0.04 |
0.02 |
0.01 |
0.01 |
|
|
80-240 |
400 |
yes |
|
|
2.0 |
1.57 |
1.01 |
0.75 |
0.42 |
0.27 |
0.160 |
0.10 |
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