| Part | Material |
| Flanges | Ductile Iron (DN40…DN300) Carbon Steel Stainless Steel 304 Stainless Steel 316 |
| Reinforcing Ring | Carbon Steel |
| Inner Rubber | EPDM |
| Outer Rubber | EPDM |
| Reinforcing Cord | Nylon |
| Control Rod | Mild Steel |
Notes: PN25 only available for carbon steel flanges.
| Diameter | Dimension | Pre-Gap | Allowable Movements(mm) | ||||
| mm | inch | L(mm) | L(mm) | Axial Elongation(mm) | Axial Compression(mm) | Lateral Displacement(mm) | Angle of Deflection(“) |
| 25 | 1 | 130 | 125-135 | 9 | 12 | 12 | 12 |
| 32 | 1¼ | 150 | 145-155 | 9 | 15 | 15 | 15 |
| 40 | 1½ | 150 | 145-155 | 9 | 15 | 15 | 15 |
| 50 | 2 | 150 | 145-155 | 9 | 15 | 15 | 15 |
| 65 | 2½ | 150 | 145-155 | 9 | 15 | 15 | 15 |
| 80 | 3 | 150 | 145-155 | 9 | 15 | 15 | 15 |
| 100 | 4 | 150 | 145-155 | 9 | 16 | 15 | 15 |
| 125 | 5 | 150 | 145-155 | 9 | 16 | 15 | 15 |
| 150 | 6 | 150 | 145-155 | 9 | 16 | 15 | 10 |
| 200 | 8 | 150 | 145-155 | 9 | 16 | 15 | 10 |
| 250 | 10 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 300 | 12 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 350 | 14 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 400 | 16 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 450 | 28 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 500 | 20 | 200 | 195-205 | 15 | 20 | 20 | 10 |
| 600 | 24 | 265 | 260-270 | 16 | 28 | 28 | 10 |
A control unit assembly is an accessory of two or more control rod units (limit rods, tie rods or compression sleeves) placed between the flanges across a flexible joint to minimize possible destruction caused by excessive motion of a pipeline. When used in this manner, control units are an additional safety factor which can minimize possible damage to the adjacent equipment.
A control unit is strongly recommended to use when:
– In case that proper anchoring cannot be provided.
– In case that it is hard to withstand the line thrusts generated by internal pressure or wide temperature fluctuations.
– In case that the anticipated elongation, compression and lateral movement are more than the design, pre-gap and/or installation tolerance.
– In case that the anticipated angle of deflection is more than the design and/or installation tolerance.
| DN(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
| Quantity(PN16) | N/A | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Quantity(PN25) | N/A | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | – | – | – | – | – |
As a direct manufacturer, we have dedicated measurement, installation, and production teams to ensure a perfect fit every time.
Our representatives will contact you shortly to confirm your appointment date and time. Thank you for your interest!
