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 | ||||||||||||
| 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 |
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| 125 |
|
| 200 |
|
| 420 |
| Quick open valve core |
|
| 35 |
|
| 55 |
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| 95 |
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| 135 |
|
| 220 |
|
| 460 |
| Nominal pressure Mpa | 1.6， 2.5， 4.0， 6.4 | |||||||||||||||||
| stroke mm | 25 | 38 | 50 | |||||||||||||||
| Stroke, quick opening mm | 10 | 13 | 19 | 25 | 30 | |||||||||||||
| Flow characteristics | straight line, equal percentage | |||||||||||||||||
| Operating temperature | Normal temperature (-40～230℃), medium temperature (-40～450℃), high temperature (-40～550℃), low temperature (-40～-196℃) | |||||||||||||||||
| flange standard | JB79，HG20592，GB，ANSI，JIS，DIN | |||||||||||||||||
| Adjustable ratio | 50:1 | |||||||||||||||||
| leak level | Metal hard seal grade Ⅳ, PTFE soft seal grade Ⅵ | |||||||||||||||||
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 | |||
| Air source pressure Mpa | 0.1-0.4 | |||
| Air supply connector | RC1/4 | |||
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 | ||||
| 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 | ||||
| Return difference % | Without positioner | ≤3.0 | With positioner | start point | ±1.0 | ||
| With positioner | ≤1.0 | end point | ±1.0 | ||||
| Dead zone | Without positioner | ≤3.0 | air open | Without positioner | start point | ±2.5 | |
| With positioner | ≤0.4 | end point | ±5.0 | ||||
| Rated stroke deviation% | ±2.5 | With positioner | start point | ±1.0 | |||
| end point | ±1.0 | ||||||
| Allowable leakage L/h | 1×10-3 Valve rated capacity | ||||||
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 |
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|
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| 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 | |||||||||||||
| 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 |
| |
| 20-100 | 160 | yes | 2.0 | 1.71 | 1.21 | 0.07 | 0.44 | 0.31 | 0.17 | 0.11 | 0.07 |
| ||
| 2.8 |
| |||||||||||||
| 80-240 | 400 | yes | 2.0 | 2.0 | 2.0 | 2.0 | 1.32 | 0.98 | 0.52 | 0.33 | 0.20 |
| ||
| 5.0 | 5.0 | 3.6 | 2.1 |
| ||||||||||
| 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 | ||
| 80-240 | 400 | yes |
|
| 2.0 | 2.0 | 2.0 | 1.61 | 0.91 | 0.58 | 0.35 | 0.22 | ||
| 5.0 | 3.6 | 2.25 | ||||||||||||
| air open | HA2R | 20-100 | 140 | yes or no | 0.31 | .019 | 0.13 | 0.08 | 0.05 | 0.03 | 0.02 |
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|
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| 80-240 | 280 | yes | 2.0 | 1.35 | 0.7 | 0.55 | 0.34 | 0.24 | 0.14 |
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| 2.2 | ||||||||||||||
| 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 |
| |
| 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 | |||||||||||||
| 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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