Rectangular Ventilation Butterfly Valve
Keywords:
Valve Encyclopedia
Category:
- Product Description
-
Product Use
The rectangular ventilation butterfly valve is a non-hermetic type of butterfly valve. It is widely used in industrial pipelines—including metallurgy, petrochemicals, power generation, building materials, and mining—for controlling or regulating gaseous media.
Product Features
● The rectangular ventilation butterfly valve features a novel design, a reasonable structure, lightweight construction, and quick opening and closing.
· The rectangular ventilation butterfly valve has low torque, is easy to operate, and is effortless and nimble.
· The rectangular ventilation butterfly valve is made of materials suitable for withstanding low, medium, and high-temperature media as well as corrosive media.
· A connecting seat is provided between the valve’s flange and the actuator. The bolts securing the stationary packing gland can be adjusted through the packing window on the connecting seat, ensuring axial sealing.
· Rectangular ventilation butterfly valves can be manufactured in various specifications and sizes according to customer requirements.
Standard specifications
Design standards
JB/T8692
Structural length
JB/T8692
Flange connection dimensions
Factory logo
Inspection and Testing
GB/T13927
Model and Transmission Method
Rectangular handle D41W
Handle
Rectangular manual D341W
Manual/Worm-driven
Rectangular Pneumatic D641W
Switch/Adjustment/Quick Switch/Explosion-Proof
Rectangular Electric D941W
Switch/Adjustment/Smart/Explosion-Proof
Main component materials
Valve body
Q235/Q345/304/316
Valve plate
Q235/Q345/304/316
Valve stem
20Cr13
Filler
Flexible graphite/PTFE
D4IW·D341W·D641W ·D941W
Main external dimensions and connection sizes (0.1 MPa), unit: mm
DN
Structural length
External dimensions
L
H1
H2
H3
200×200
100
198
298
100
250×250
100
223
323
100
300×300
140
268
368
100
350×350
140
293
393
100
400×400
140
318
428
125
450×450
140
343
453
125
500×500
160
383
493
125
600×600
160
433
553
145
700×700
160
483
603
145
800×800
160
533
653
145
900×900
160
583
703
145
1000×1000
180
648
778
180
1100×1100
180
698
828
180
1200×1200
180
748
878
180
1300×1300
180
798
928
180
1400×1400
180
848
988
220
1500×1500
180
898
1038
220
1600×1600
200
963
1103
220
1700×1700
200
1013
1163
240
1800×1800
200
1063
1213
240
1900×1900
200
1113
1263
240
2000×2000
200
1163
1323
270
2100×2100
220
1223
1383
270
2200×2200
220
1273
1433
270
2300×2300
220
1323
1493
320
2400×2400
220
1373
1543
320
2500×2500
220
1423
1593
320
2600×2600
250
1478
1658
360
2700×2700
250
1530
1710
360
2800×2800
250
1578
1758
360
2900×2900
250
1628
1808
360
3000×3000
250
1678
1858
360
3100×3100
300
1745
1925
360
3200×3200
300
1795
1985
430
3300×3300
300
1845
2035
430
3400×3400
300
1895
2085
430
3500×3500
300
1945
2135
430
Note:
1. The dimensions provided here are reference dimensions for square ventilation butterfly valves; for rectangular valves, the dimensions shall be as specified by the user.
2. Eye spacing and quantity shall be based on the size of the new words or on the dimensions requested by the user.
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