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Central body
Carbon steel central body conveniently built in order to allow a perfect insertion of the gasket inside its dedicated conical seat.

Compression ring
Carbon steel compression followers which allow compression of the gasket onto the pipe surface upon tightening the bolts.

Gasket
Truncated-cone sealing gasket which can be perfectly inserted between the central body of the coupling and the circumference of the pipe. It allows a complete hydraulic seal and a 30 mm tolerance range on the pipe OD.

Bolt holes
Round or square holes for the bolt insertion.

Compression bolts
The compression bolts allow the approaching of the compression flanges and the consequent compression of the gasket onto the pipe.

Radial set of pull-out resistance grippers
Manufactured in C40 tempered steel, they allow the total locking of the pipe. End restraint grippers, which can be used on PE, steel, DCI and PVC pipe lines, guarantee a pull-out resistance action and their special design allows an easy assembly and disassembly of the coupling without damaging the Rilsan coating.

End restraint containing ring
Manufactured in carbon steel, optimizes the pull-out resistance action, also avoiding the rotation of the grippers during the tightening phase.

Separate bolts version
The bolts tightening is independent in order to improve the coupling centering and the performances of the gasket.

MULTIGRIP MGR-D DOUBLE BOLT COUPLING RATED HYDRAULIC SEALING AND END RESTRAINT SYSTEM

 

DN

Ø d

 

L1

Max. External Dimension Ø C

Compression Bolts

Gap X

 

Weight

Min.

Max.

Quantity N

Max.

Min.

 

350

340

370

 

355

560

 

18

 

220

 

25

127

360

390

580

133

 

400

385

415

600

144

415

445

640

148

 

450

440

470

660

 

24

163

465

495

680

170

 

500

490

520

720

177

515

545

740

184

560

545

575

788

28

207

 

600

595

625

808

 

30

222

615

645

828

228

 

700

695

725

908

 

36

254

720

750

933

284

 

800

785

815

998

304

795

825

1008

307

825

855

1038

347

 

900

885

915

1098

367

900

930

1113

 

40

372

930

960

1143

386

 

1000

985

1015

1198

 

44

404

1000

1030

1213

409

1030

1060

1243

447

 

1100

1100

1130

1313

 

48

471

1135

1165

1348

499

 

1200

1185

1215

1398

517

1205

1235

1418

525

1240

1270

1453

542

 

1400

1385

1415

1598

 

60

-

1405

1435

1618

-

1445

1475

1658

64

-

DN

Ø d

L1

Max. External Dimension Ø C

Compression Bolts

Gap X

 

Weight

Min.

Max.

Quantity N

Max.

Min.

 

350

340

370

 

355

560

 

18

 

220

 

25

156

360

390

580

163

 

400

385

415

600

172

415

445

640

182

 

450

440

470

660

 

24

199

465

495

680

207

 

500

490

520

720

216

515

545

740

225

560

545

575

788

28

228

 

600

595

625

808

 

30

244

615

645

828

250

 

700

695

725

908

 

36

295

720

750

933

307

 

800

785

815

998

329

795

825

1008

332

825

855

1038

355

 

900

885

915

1098

376

900

930

1113

 

40

381

930

960

1143

425

 

1000

985

1015

1198

 

44

446

1000

1030

1213

451

1030

1060

1243

465

 

1100

1100

1130

1313

 

48

-

1135

1165

1348

-

 

1200

1185

1215

1398

-

1205

1235

1418

-

1240

1270

1453

-

 

1400

1385

1415

1598

 

60

-

1405

1435

1618

-

1445

1475

1658

64

-

  • The data concerning the min. and max. gap is calculated on the minimum outside diameter of the product's range
  • All end restraint fittings installed on pe Or pressure PVC Pipes must be integrated with an internal reinforcing liner provided or approved by noVA SIRIA.
  • This chart is for indicative purposes. Nova Siria srl can vary the indicated standards (tolerance range, dimensions and materials) according to specifications requested by Customers or to designing needs.
  • NOVA SIRIA end restraint fittings are suitable for the following pipes: steel, ci/DI, PE, pressure PVC.
  •