2018 China New Design Pipeline Fast Couplings - Pull rod clamps – Grip
The GRIP-LM pipe coupling including three to four pull rods which can effectively reduce the axial pull strength of pipes. The perfect combination of pull rods and coupling greatly lessen vibration, lower noise as well as provide ideal compensation. Easy and quick installation make GRIP-LM a reliable choice for you.
Suitable for pipes O.D φ304-φ762mm
GRIP-LM only can be used on metal pipes.
GRIP-LM Technical parameters
| Pipe outside diameter | Clamping range | Working pressure | Product O.D. | Width | Distance between sealing slips | Setting gap between pipe ends | Torque rate | Bolt | |||
| O.D. | Min-Max |  |
 |
Φ D | B | C | without strip insert | with strip insert | |||
| （mm） | （In.） | （mm） | (bar) | (bar) | (mm) | (mm) | (mm) | (mm) | (mm) | (Nm) | M |
| 180 | 7.087 | 166-171 | 16 | 30 | 202 | 142 | 75 | 10～25 | 40 | 50 | |
| 200 | 7.874 | 198-202 | 16 | 30 | 222 | 142 | 75 | 10～25 | 40 | 50 | |
| 219.1 | 8.626 | 216-222 | 16 | 30 | 249.1 | 142 | 75 | 10～25 | 40 | 60 | |
| 250 | 9.843 | 247-253 | 16 | 25 | 280 | 142 | 75 | 10～25 | 40 | 60 | |
| 267 | 10.512 | 264-270 | 16 | 25 | 297 | 142 | 75 | 10～25 | 40 | 60 | |
| 273 | 10.748 | 270-276 | 16 | 25 | 303 | 142 | 75 | 10～25 | 40 | 60 | |
| 304 | 11.969 | 301-307 | 10 | 20 | 334 | 142 | 75 | 10～25 | 40 | 80 | M12×2 |
| 323.9 | 12.752 | 320-327 | 10 | 20 | 353 | 142 | 75 | 10～25 | 40 | 80 | |
| 355.6 | 14.000 | 352-359 | 8.5 | 16 | 385.6 | 142 | 75 | 10～25 | 40 | 80 | |
| 377 | 14.843 | 375-379 | 8.5 | 16 | 407 | 142 | 75 | 10～25 | 40 | 80 | |
| 406.4 | 16.000 | 402-411 | 7.5 | 16 | 436 | 142 | 75 | 10～25 | 40 | 80 | |
| 457.2 | 18.000 | 452-462 | 6.5 | 16 | 487 | 142 | 75 | 10～25 | 40 | 80 | |
| 508 | 20.000 | 503-513 | 6 | 12 | 538 | 142 | 75 | 10～25 | 40 | 120 | M16*2 |
| 558.8 | 22.000 | 554-564 | 5.5 | 10 | 588.8 | 142 | 75 | 10～25 | 40 | 160 | |
| 609.6 | 24.000 | 605-615 | 5 | 10 | 639.6 | 142 | 75 | 10～25 | 40 | 160 | |
| 711.2 | 28.000 | 708-715 | 4 | 5 | 741.2 | 142 | 75 | 10～25 | 40 | 160 | |
| 762 | 30.000 | 758-766 | 4 | 5 | 792 | 142 | 75 | 10～25 | 40 | 160 | |
GRIP-LM Material Selection
| Material Components | V1 | V2 | V3 | V4 | V5 | V6 |
| Casing | AISI 304 | AISI 316L | AISI 316TI | AISI 316L | AISI 316TI | AISI 304 |
| Bolts | AISI 304 | AISI 316L | AISI 316L | AISI 304 | AISI 304 | AISI 4135 |
| Bars | AISI 304 | AISI 316L | AISI 316L | AISI 304 | AISI 304 | AISI 4135 |
| Anchoring ring | ||||||
| Strip insert (optional) | AISI 301 | AISI 301 | AISI 301 | AISI 301 | AISI 301 |
Material of rubber gasket
| Material of seal | Media | Temperature range |
| EPDM | All quality of waters,waste water, air, solids and chemical products | -30℃ up to+120℃ |
| NBR | Water,gas, oil, fuel and other hydrocanbons | -30℃upto+120℃ |
| MVQ | High temperature liquid, oxygen, ozone, water and so on | -70℃ up to+260℃ |
| FPM/FKM | Ozone, oxygen, acids,gas, oil and fuel (only with strip insert) | 95℃up to+300℃ |
GRIP-LM is the deformation of G type, based on GRIP-G to improve better performance of GRIP-G for large pipes outside diameters above 300mm, deleted two anchoring and added three pull rods, which can effectively reduce the axial pull strength of pipes.
The perfect combination of pull rods and couplings greatly lessen vibration, lower noise as well as provide ideal compensation.
