Black Flange Assemblies

Flange Assembly / Standard / Spigot / PN16 / SDR9

DESIGNED FOR ABOVE GROUND INSTALLATION WHERE THERMAL DE-RATION IS REQUIRED

This assembly comprises of a standard flange adaptor complying to ISO 9624 rated for PN20 SDR9, complete with a PN16 rated backing flange (flanges do not require de-ration).

This PN20 SDR9 flange assembly is designed for above-ground installation where the pipe is exposed to sunlight. The fittings pressure rating is increased from PN16 to PN20 (SDR11 to SDR 9) to accommodate thermal de-ration required in BS EN 12201-1 Annex A, Table A.1. and WSD PS Appendix, Table 22.09-3. 

Machined from PE100+ black hollow bar, with an extra-long spigot to allow fastener removal once fused in place. Supplied with an FBE coated loose steel backing flange, complying to EN 1092-1 PN16 and coated in accordance with WIS 4-52-01. Fasteners and gaskets are not included with this flange assembly.

NOTE: This SDR9 flange assembly complete with a loose backing flange is drilled and rated for a maximum operating pressure of PN16 only.

This product is designed for above-ground PN16 applications that require PN20 fittings for the purpose of thermal de-ration but still connect using standard flanges drilled PN16.
AoR dimensions are available on request, please contact us.

Full Face Straight Flange Adaptor Black SDR9

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5317.J6.090080

90 x 80

90

AoR

69

AoR

AoR

127

80

AoR

160

AoR

18

8

P5317.J6.125100

125 x 100

125

AoR

96

AoR

AoR

152

100

AoR

180

AoR

18

8

P5317.J6.180150

180 x 150

180

AoR

138

AoR

AoR

184

150

AoR

240

AoR

22

8

 

Flange Assembly / Full Face Straight / Spigot / PN16 / SDR9

DESIGNED FOR ABOVE GROUND INSTALLATION WHERE THERMAL DE-RATION IS REQUIRED

Full face flange adaptor drilled to EN 1092-1 PN16. Injection moulded in PE100 RC or machined from PE100+ black hollow bar with an extra-long spigot to allow fastener removal once fused in place. Supplied with a matching FBE coated loose steel backing flange, complying to EN 1092-1 PN16 and coated in accordance with WIS 4-52-01. The flanges DN matches the pipes nominal size (d3). Fasteners and gaskets are not included with this flange assembly.

These assemblies are designed to connect PE pipes to DI Valves and other fittings by flange joint, without creating a significant internal step. Below you can see the flanges nominal dimension (DN) approximately matches the pipes nominal ID (d3) when using full-face flanges, this is not the case when using a standard flange in these sizes.

This flange adaptor is not rotatable once fused to the pipe.  Flange adaptor bolt holes should be aligned with the valve flange bolt holes before fusing to the pipe, to ensure the valves axis is vertical after fixing.

NOTE: This SDR9 flange assembly complete with a loose backing flange is drilled and rated for PN16 only.

This product is designed for above-ground PN16 applications that require PN20 fittings for the purpose of thermal de-ration but still connect using standard flanges drilled PN16.
Click here to understand why Full Face flange adaptors are required.
AoR dimensions are available on request, please contact us.

Full Face Straight Flange Adaptor Black SDR9

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5317.FG.250200

250 x 200

250

AoR

192

AoR

AoR

325

200

AoR

295

AoR

22

12

P5317.FG.315250

315 x 250

315

AoR

242

AoR

AoR

360

250

AoR

355

AoR

26

12

P5317.FG.355300

355 x 300

355

AoR

272

AoR

AoR

395

300

AoR

410

AoR

26

12

 

Flange Assembly / Full Face Stepped / Spigot / PN16 / SDR9

DESIGNED FOR ABOVE GROUND INSTALLATION WHERE THERMAL DE-RATION IS REQUIRED

Full face stepped flange adaptors are designed to connect PE pipes to DI valves and other fittings in large sizes whilst maintaining the same nominal pipe bore and flange bolting PCD between the PE and DI.  This cannot be achieved using a Standard PE flange adaptor.

Typically in larger sizes (450 OD PE connecting to DN350 DI) the step is so large that the fasteners through the connecting flange foul on the pipe OD.  The Mill-Pro design lengthens the spigot and creates a reduced OD area behind the flange face to provide for fastener clearance. Regardless of the design, all stepped flange adaptors must maintain the same SDR rating as the connecting pipe, throughout the entire spigot length, to ensure the full pressure rating is maintained. 

Full face flange adaptors are machined from PE100+ black hollow bar.  Supplied complete with a rotatable but non-removable, FBE coated, loose steel backing flange, complying to EN 1092-1 PN16. Steel flanges are coated in accordance with WIS 4-52-01. Fasteners and gaskets are not included.

NOTE: The PE flange adaptor is not rotatable once fused to the pipe.  Flange adaptor bolt holes should be aligned with the valve flange bolt holes before fusing to the pipe, to ensure the valves axis is vertical after fixing.

NOTE: This SDR9 flange assembly complete with a loose backing flange is drilled and rated for PN16 only.

Click here to understand why Full Face flange adaptors are required.
AoR dimensions are available on request, please contact us.

Full Face Stepped Flange Adaptor Black SDR9

Loose Backing Flange EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5317.EG.450350

450 x 350

450

AoR

319

AoR

AoR

450

350

AoR

470

AoR

26

16

P5317.EG.500400

500 x 400

500

AoR

356

AoR

AoR

500

400

AoR

525

AoR

30

16

P5317.EG.560450

560 x 450

560

AoR

401

AoR

AoR

550

450

AoR

585

AoR

30

20

P5317.EG.630500

630 x 500

630

AoR

448

AoR

AoR

600

500

AoR

650

AoR

33

20

P5317.EG.710600

710 x 600

710

AoR

536

AoR

AoR

670

600

AoR

770

AoR

36

20

P5317.EG.800700

800 x 700

800

AoR

593

AoR

AoR

750

700

AoR

840

AoR

36

24

 

Flange Assembly / Full Face Straight / Spigot / PN16 / SDR11

Full face flange adaptor drilled to EN 1092-1 PN16. Injection moulded in PE100 RC or machined from PE100+ black hollow bar with an extra-long spigot to allow fastener removal once fused in place. Supplied with a matching FBE coated loose steel backing flange, complying to EN 1092-1 PN16 and coated in accordance with WIS 4-52-01. The flanges DN matches the pipes nominal size (d3). Fasteners and gaskets are not included with this flange assembly.

These assemblies are designed to connect PE pipes to DI Valves and other fittings by flange joint, without creating a significant internal step. Below you can see the loose backing flanges nominal dimension (DN) approximately matches the pipes nominal ID (d3) when using full-face flanges. This is not the case when using a standard flange in these sizes.

NOTE: This flange adaptor is not rotatable once fused to the pipe.  Flange adaptor bolt holes should be aligned with the valve flange bolt holes before fusing to the pipe, to ensure the valves axis is vertical after fixing.

Click here to understand why Full Face flange adaptors are required.
AoR dimensions are available on request, please contact us.
For larger sizes use Full Face Stepped below

Full Face Straight Flange Adaptor Black SDR11

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5316.FG.355300

355 x 300

355

AoR

287

AoR

AoR

395

300

AoR

410

AoR

26

12

 

Flange Assembly / Full Face Stepped / Spigot / PN16 / SDR11

Full face stepped flange adaptors are designed to connect PE pipes to DI valves and other fittings in large sizes whilst maintaining the same nominal pipe bore and flange bolting PCD between the PE and DI.  This cannot be achieved using a Standard PE flange adaptor.

Typically in larger sizes (450 OD PE connecting to DN350 DI) the step is so large that the fasteners through the connecting flange foul on the pipe OD.  The Mill-Pro design lengthens the spigot and creates a reduced OD area behind the flange face to provide for fastener clearance. Regardless of the design, all stepped flange adaptors must maintain the same SDR rating as the connecting pipe, throughout the entire spigot length, to ensure the full pressure rating is maintained. 

Full face flange adaptors are machined from PE100+ black hollow bar.  Supplied complete with a rotatable but non-removable, FBE coated, loose steel backing flange, complying to EN 1092-1 PN16. Steel flanges are coated in accordance with WIS 4-52-01. Fasteners and gaskets are not included.

NOTE: The PE flange adaptor is not rotatable once fused to the pipe.  Flange adaptor bolt holes should be aligned with the valve flange bolt holes before fusing to the pipe, to ensure the valves axis is vertical after fixing.

Click here to understand why Full Face flange adaptors are required.
AoR dimensions are available on request, please contact us.

Full Face Stepped Flange Adaptor Black SDR11

Loose Backing Flange EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5316.EG.450350

450 x 350

450

AoR

334

AoR

AoR

450

350

AoR

470

AoR

26

16

P5316.EG.500400

500 x 400

500

AoR

374

AoR

AoR

500

400

AoR

525

AoR

30

16

P5316.EG.560450

560 x 450

560

AoR

422

AoR

AoR

550

450

AoR

585

AoR

30

20

P5316.EG.630500

630 x 500

630

AoR

470

AoR

AoR

600

500

AoR

650

AoR

33

20

P5316.EG.710600

710 x 600

710

AoR

564

AoR

AoR

670

600

AoR

770

AoR

36

20

P5316.EG.800700

800 x 700

800

AoR

623

AoR

AoR

750

700

AoR

840

AoR

36

24

 

Flange Assembly / Standard / Spigot / PN16 / SDR11

Standard flange adaptor complying to ISO 9624 in SDR 11 rated for PN16. Machined from PE100+ black hollow bar, with an extra-long spigot to allow fastener removal once fused in place. Supplied with an FBE coated loose steel backing flange, complying to EN 1092-1 PN16 and coated in accordance with WIS 4-52-01. Fasteners and gaskets are not included with this flange assembly.

The sizes given below are suitable for connecting PE pipe to PE pipe via flanged joints, however, flanged connections to other materials, (such as DI valves and fittings) will create an undesirable internal step at the interface between the PE and DI flanges.

Example: In the table below 710 x 700, the PE pipe & flange adaptor ID (d3) is 574mm (effectively DN600) and the loose steel backing flange bolts to a DN700 DI flange.  This combination creates a 63mm internal step on each side of the joint. This joint also requires a larger DN700 valve or fitting to be used in a DN600 pipeline, adding unnecessary cost.  The alternate is a full-face flange assembly from the table above where the PE can bolt directly to a DN600 DI valve or fitting, to avoid such internal steps.

NOTE: A standard SDR 11 flange Adaptor has an ID given below in d3.  This ID (d3) does not match the loose backing flanges Nominal Diameter (DN). A significant internal step is created between the PE flange adaptors nominal ID and the connecting DI valve or fittings nominal ID. Refer to the illustration below.

WSD PS requires Full Face Flange assemblies to be used on sizes > DN150 to DN700.
AoR dimensions are available on request, please contact us.

Standard Flange Adaptor Black SDR11

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5316.J6.355350

355 x 350

355

AoR

287

AoR

AoR

260

350

AoR

470

AoR

26

16

P5316.J6.450450

450 x 450

450

AoR

364

AoR

AoR

370

450

AoR

585

AoR

30

20

P5316.J6.500500

500 x 500

500

AoR

405

AoR

AoR

400

500

AoR

650

AoR

33

20

P5316.J6.560600

560 x 600

560

AoR

453

AoR

AoR

435

600

AoR

770

AoR

36

20

P5316.J6.630600

630 x 600

630

AoR

510

AoR

AoR

435

600

AoR

770

AoR

36

20

P5316.J6.710700

710 x 700

710

AoR

574

AoR

AoR

440

700

AoR

840

AoR

36

24

P5316.J6.800800

800 x 800

800

AoR

647

AoR

AoR

445

800

AoR

950

AoR

39

24

 

Flange Assembly / Standard / Spigot / PN20 / SDR9

As above for a standard flange assembly, but rated for SDR9 PN20 pressure applications. Note the flange is rated PN25, no PN20 rating tables are provided in BS EN 1092-1.

NOTE: A standard SDR 11 flange Adaptor has an ID given below in d3.  This ID (d3) does not match the loose backing flanges Nominal Diameter (DN). A significant internal step is created between the PE flange adaptors nominal ID and the connecting DI valve or fittings nominal ID. Refer to the illustration below.

EN1092 does not have tables for PN20 flange pattern, so a PN25 flange pattern is used.
dn800 is the largest sizes pipe in SDR9 rated pipe.
Full Face designs that meet WSD PS available on request.
AoR dimensions are available on request, please contact us.

Standard Flange Adaptor Black SDR9 PN20

Loose Backing Ring EN1092 PN25

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5317.J8.090080

90 x 80

90

AoR

69

AoR

AoR

127

80

AoR

160

AoR

18

8

P5317.J8.125100

125 x 100

125

AoR

96

AoR

AoR

152

100

AoR

190

AoR

22

8

P5317.J8.180150

180 x 150

180

AoR

138

AoR

AoR

184

150

AoR

250

AoR

26

8

P5317.J8.250250

250 x 250

250

AoR

192

AoR

AoR

200

250

AoR

370

AoR

30

12

P5317.J8.315300

315 x 300

315

AoR

242

AoR

AoR

278

300

AoR

430

AoR

30

16

P5317.J8.355350

355 x 350

355

AoR

272

AoR

AoR

280

350

AoR

490

AoR

33

16

P5317.J8.450450

450 x 450

450

AoR

345

AoR

AoR

395

450

AoR

600

AoR

36

20

P5317.J8.500500

500 x 500

500

AoR

383

AoR

AoR

425

500

AoR

660

AoR

36

20

P5317.J8.560600

560 x 600

560

AoR

429

AoR

AoR

460

600

AoR

770

AoR

39

20

P5317.J8.630600

630 x 600

630

AoR

483

AoR

AoR

465

600

AoR

770

AoR

39

20

P5317.J8.710700

710 x 700

710

AoR

574

AoR AoR 460 700 AoR 875 AoR 42 24

P5317.J8.800800

800 x 800

800

AoR

647

AoR AoR 475 800 AoR 990 AoR 48 24

 

Flange Assembly / Standard / Spigot / PN10 / SDR17

NOTE: This flange assembly is SDR17 so rated for PN10, however, the loose backing flange is drilled PN16.  PN10 drilled backing flanges for these assemblies are available on request.

As above for a standard flange assembly, but rated for SDR17 PN10 pressure applications. Note the flange is rated PN16 to match typical connections in Hong Kong

NOTE: A standard SDR 17 flange Adaptor has an ID given below in d3.  This ID (d3) does not match the loose backing flanges Nominal Diameter (DN). A significant internal step is created between the PE flange adaptors nominal ID and the connecting DI valve or fittings nominal ID. Refer to the illustration below.

Larger sizes up to DN1600 are available in PN10 SDR17 rating, dimensions on request.
AoR dimensions are available on request, please contact us.

Standard Flange Assembly Black SDR17

Loose Backing Flange EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P5314.J6.630600

630 x 600

630

AoR

552

AoR

AoR

425

600

AoR

770

AoR

36

20

P5314.J6.710700

710 x 700

710

AoR

622

AoR

AoR

430

700

AoR

840

AoR

36

24

P5314.J6.800800

800 x 800

800

AoR

701

AoR

AoR

435

800

AoR

950

AoR

39

24

P5314.J6.900900

900 x 900

900

AoR

788

AoR

AoR

485

900

AoR

1050

AoR

39

28

P5314.J6.10001000

1000 x 1000

1000

AoR

876

AoR

AoR

485

1000

AoR

1170

AoR

42

28

P5314.J6.12001200

1200 x 1200

1200

AoR

1051

AoR

AoR

525

1200

AoR

1390

AoR

48

32

 

Flange Assembly / Standard / Butt Fusion / PN16 / SDR11

As above, this assembly rated for PN 16. Butt Fusion length, NOT suitable for electrofusion jointing.

NOTE: A standard SDR 11 flange Adaptor has an ID given below in d3.  This ID (d3) does not match the loose backing flanges Nominal Diameter (DN). A significant internal step is created between the PE flange adaptors nominal ID and the connecting DI valve or fittings nominal ID. Refer to the illustration below.

Sizes, dn630 and dn710 do not comply with the requirements in WSD PS, Black full face flange assemblies are required in these sizes, however, sizes ≥ dn800 are fully compliant.
All standard PE flange adaptors of any size are suitable for PE to PE pipe joints without creating an internal step.
AoR dimensions are available on request, please contact us.

Standard BW Flange Assembly Black SDR11

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P2316.J6.630600

630 x 600

630

AoR

510

25

AoR

120

600

AoR

770

AoR

36

20

P2316.J6.710700

710 x 700

710

AoR

574

20

AoR

120

700

AoR

840

AoR

36

24

P2316.J6.800800

800 x 800

800

AoR

647

20

AoR

140

800

AoR

950

AoR

39

24

P2316.J6.900900

900 x 900

900

AoR

728

25

AoR

160

900

AoR

1050

AoR

39

28

P2316.J6.10001000

1000 x 1000

1000

AoR

809

25

AoR

170

1000

AoR

1170

AoR

42

28

 

Flange Assembly / Standard / Butt Fusion / PN10 / SDR17

NOTE: This flange adaptor is SDR17 so rated for PN10, however, the loose backing flange is drilled PN16.  PN10 drilled backing rings for these assemblies are available on request.

As above, rated for PN 10, drilled for PN16 flange. Butt Fusion length, NOT suitable for electrofusion jointing.

NOTE: A standard SDR 11 flange Adaptor has an ID given below in d3.  This ID (d3) does not match the loose backing flanges Nominal Diameter (DN). A significant internal step is created between the PE flange adaptors nominal ID and the connecting DI valve or fittings nominal ID. Refer to the illustration below.

AoR dimensions are available on request, please contact us.

Standard BF Flange Assembly Black SDR11

Loose Backing Ring EN1092 PN16

Product Code

dn x DN

dn

D4

d3

le

t3

L

DN

D

k

C1

D1

No. of Holes

P2314.J6.630600

630 x 600

630

AoR

552

25

AoR

120

600

AoR

770

AoR

36

20

P2314.J6.710700

710 x 700

710

AoR

622

20

AoR

120

700

AoR

840

AoR

36

24

P2314.J6.800800

800 x 800

800

AoR

701

20

AoR

130

800

AoR

950

AoR

39

24

P2314.J6.900900

900 x 900

900

AoR

789

25

AoR

145

900

AoR

1050

AoR

39

28

P2314.J6.10001000

1000 x 1000

1000

AoR

876

25

AoR

135

1000

AoR

1170

AoR

42

28

P2314.J6.12001200

1200 x 1200

1200

AoR

1052

25

AoR

150

1200

AoR

1390

AoR

48

32