Butterfly Damper
In the manual butterfly damper, the disc is rotated by operating the lever, and the bolt is tightened at the desired position to fix the disc in place and adjust the fluid flow.
The drive system can be manual, electric, or pneumatic.
| Caliber | 100A | 150A | 200A | 250A | 300A | 350A | 400A | 450A | 500A | 550A |
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ114.3 | φ165.2 | φ216.3 | φ267.4 | φ318.5 | φ355.6 | φ406.4 | φ457.2 | φ508.0 | φ558.8 |
| Reference Surface-to-Surface(mm) | 180 | 180 | 180 | 180 | 180 | 200 | 220 | 220 | 240 | 240 |
| Maximum pressure(MPa) | 0.61 | 0.61 | 0.58 | 0.38 | 0.29 | 0.23 | 0.18 | 0.14 | 0.14 | 0.14 |
| Caliber | 600A | 650A | 700A | 800A | 900A | 1000A | 1100A | 1200A | 1350A | 1500A |
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ609.6 | φ660.4 | φ711.2 | φ812.8 | φ914.4 | φ1016.0 | φ1117.6 | φ1219.2 | φ1371.6 | φ1524.0 |
| Reference Surface-to-Surface(mm) | 240 | 250 | 250 | 260 | 260 | 260 | 260 | 300 | 300 | 330 |
| Maximum pressure(MPa) | 0.14 | 0.13 | 0.11 | 0.08 | 0.07 | 0.07 | 0.07 | 0.07 | 0.06 | 0.04 |
Check Damper
In the check damper, the wind pressure of the fluid causes the disc to open and the fluid to flow. It also closes when the pressure is reduced or the flow is reversed. The disc has a balance weight for smooth movement.
| Caliber | 100A | 150A | 200A | 250A | 300A | 350A | 400A | 450A | 500A | 550A |
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ114.3 | φ165.2 | φ216.3 | φ267.4 | φ318.5 | φ355.6 | φ406.4 | φ457.2 | φ508.0 | φ558.8 |
| Reference Surface-to-Surface(mm) | 280 | 360 | 440 | 520 | 600 | 660 | 720 | 800 | 900 | 950 |
| Maximum pressure(MPa) | 0.43 | 0.43 | 0.28 | 0.19 | 0.18 | 0.14 | 0.14 | 0.14 | 0.14 | 0.11 |
| Caliber | 600A | 650A | 700A | 800A | 900A | 1000A | 1100A | 1200A | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ609.6 | φ660.4 | φ711.2 | φ812.8 | φ914.4 | φ1016.0 | φ1117.6 | φ1219.2 | |||
| Reference Surface-to-Surface(mm) | 1000 | 1050 | 1100 | 1200 | 1350 | 1450 | 1550 | 1650 | |||
| Maximum pressure(MPa) | 0.08 | 0.08 | 0.07 | 0.06 | 0.05 | 0.04 | 0.03 | 0.03 |
Three-way Check Damper
In the three-way check damper, the wind pressure of the fluid causes the disc to move toward the anti-inlet side of the fluid, and the fluid flows toward the outlet side at right angles to the inlet. The disc is supported by a bearing unit and moves smoothly.
| Caliber | 100A | 150A | 200A | 250A | 300A | 350A | 400A | 450A | 500A | 550A |
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ114.3 | φ165.2 | φ216.3 | φ267.4 | φ318.5 | φ355.6 | φ406.4 | φ457.2 | φ508.0 | φ558.8 |
| Reference Surface-to-Surface×A(mm) | 300×150 | 400×200 | 500×250 | 600×300 | 680×340 | 750×375 | 800×400 | 850×425 | 900×450 | 1000×500 |
| Maximum pressure(MPa) | 0.22 | 0.22 | 0.16 | 0.16 | 0.14 | 0.14 | 0.14 | 0.11 | 0.11 | 0.08 |
| Caliber | 600A | 650A | 700A | 800A | 900A | 1000A | 1100A | 1200A | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Outer Diameter(mm) | φ609.6 | φ660.4 | φ711.2 | φ812.8 | φ914.4 | φ1016.0 | φ1117.6 | φ1219.2 | |||
| Reference Surface-to-Surface×A(mm) | 1100×550 | 1200×600 | 1300×650 | 1400×700 | 1550×775 | 1700×850 | 1850×925 | 2000×1000 | |||
| Maximum pressure(MPa) | 0.08 | 0.06 | 0.06 | 0.06 | 0.04 | 0.03 | 0.03 | 0.03 |