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Help CenterCarbon Steel On Off Flanged Butterfly Valve , Pneumatic Butterfly Valve Triple Offset
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Certification:CE,TRCU,ISO9001
Carbon Steel On Off Flanged Butterfly Valve , Pneumatic Butterfly Valve Triple Offset
Pneumatic piston triple offset carbon steel on-off butterfly valve with handwheel
General
ZSHWE/ ZDRWE Series triple offset butterfly valve provides a bidirectional bubble tight shut-off to API 598. This geometry ensures that the disc seal contacts the seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure a uniform seal contact. Our butterfly valves are widely used in the chemical, power, light textile, food, pharmaceutics, pulp and paper and other severe application.
Specification:
Nominal Pressure: Class 150lb,300lb；
Nominal diameter range:DN80～1200(3”～48”)；
Fluid temperature range:-60～+450℃；
Flow characteristic is approximate equal percentage.
Characteristics
One-piece casted body with the feature of compact structure and lightweight； The triple offset valve advanced design features three-way eccentricity and unique elliptical seat geometry ensuring compressive sealing around the entire seat and a tight, bubble free valve. Sealing ring design is novel, concise, free repair； Stainless steel and graphite laminated seal ring provides reliable, zero leakage, bi-directional shutoff； Triple offset structure ensure non-rubbing rotation, minimizing torque required and maximizing seat/seal ring lifetime；Main Performance Parameter
Table 2
|
Item |
Description |
Pneumatic triple offset butterfly valve |
Electric triple offset butterfly valve |
|
|
1 |
Basic error＜(%) |
±2.5 |
±2.5 |
|
|
2 |
Hysteresis＜(%) |
2.5 |
2.0 |
|
|
3 |
Dead zone＜(%) |
2.0 |
3.0 |
|
|
4 |
Travel difference between start and end＜(%) |
Start |
±2.0 |
±1.5 |
|
End |
||||
|
5 |
Rated angle deviation＜(%) |
+2.5 |
+0.5 |
|
|
6 |
Rated flow coefficient deviation＜(%) |
+10 |
Specification and Technical Data
Table 3 Rated flow coefficient
|
DN(mm) |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
|
|
Rated Kv |
200 |
405 |
620 |
1150 |
2030 |
3150 |
4550 |
6200 |
8100 |
|
|
Pneumatic |
Single acting |
100 |
100 |
125 |
143 |
160 |
190 |
210 |
240 |
270 |
|
Torque(Nm) |
50 |
50 |
100 |
200 |
300 |
400 |
600 |
1000 |
1600 |
|
|
Double acting |
83 |
83 |
100 |
125 |
143 |
160 |
190 |
210 |
240 |
|
|
Torque(Nm) |
50 |
50 |
100 |
200 |
300 |
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