top of page

Double-Flanged Tapers

Connect flanged components of different nominal sizes. A double-flanged reducer connects different nominal flange sizes. Use the dedicated product drawing to match the installation arrangement.

Connection interface
Connects to a compatible mating flange. Select by flange DN, drilling, gasket and service conditions; the flange interface does not imply compatibility with every pipe material.

Product overview

Connect flanged components of different nominal sizes.

Connection interface

Connects to a compatible mating flange. Select by flange DN, drilling, gasket and service conditions; the flange interface does not imply compatibility with every pipe material.

Connection arrangement

Larger flange DN → smaller flange dn

Request a Quote

Connection and selection

Two flange sizes

Specify both nominal sizes and the installation length. Use the taper drawing for the selected pair.

Flange interface

Match the flange DN and drilling to the mating component. Select the gasket and fasteners for the specified assembly.

Size and installation

Check the product-specific drawing for the required lengths and clearances. Confirm current pressure applicability and available sizes for the project.

Request a Quote

Catalogue dimensions

Source: AQUAFITTING fixed-flange and T-type joint catalogue, page 26–27. Dimension symbols follow the corresponding source drawing. Confirm the selected configuration and current dimensions before ordering. The two 400 × 300 length variants are retained separately; confirm the selected configuration.

Double-Flanged Tapers — Catalogue dimensions
DN × dnTtL
100 × 807.27.0200
150 × 807.87.0400
150 × 1007.87.2300
200 × 1008.47.2600
200 × 1508.47.8300
250 × 1509.07.8600
250 × 2009.08.4300
300 × 1509.67.8650
300 × 2009.68.4600
300 × 2509.69.0300
350 × 20010.28.4650
350 × 25010.29.0600
350 × 30010.29.6300
400 × 20010.88.4700
400 × 25010.89.0650
400 × 30010.89.6300
400 × 30010.89.6600
400 × 35010.810.2300
450 × 25011.49.0700
450 × 30011.49.6650
450 × 35011.410.2600
450 × 40011.410.8300
500 × 30012.09.6700
500 × 35012.010.2650
500 × 40012.010.8600
500 × 45012.011.4300
600 × 35013.210.2750
600 × 40013.210.8700
600 × 45013.211.4650
600 × 50013.212.0600
700 × 40014.410.8800
700 × 45014.411.4750
700 × 50014.412.0700
700 × 60014.413.2600
800 × 45015.611.4900
800 × 50015.612.0800
800 × 60015.613.2700
800 × 70015.614.4600
900 × 50016.812.01000
900 × 60016.813.2800
900 × 70016.814.4700
900 × 80016.815.6600
1000 × 6001813.21000
1000 × 7001814.4800
1000 × 8001815.6700
1000 × 9001816.8600
1100 × 70019.214.41000
1100 × 80019.215.6800
1100 × 90019.216.8700
1100 × 100019.218.0600
1200 × 70020.414.41345
1200 × 80020.415.61160
1200 × 90020.416.8975
1200 × 100020.418.0790
1200 × 110020.419.2605
1400 × 80022.815.61590
1400 × 90022.816.81405
1400 × 100022.818.01220
1400 × 110022.819.21035
1400 × 120022.820.4850
1500 × 90024.016.81620
1500 × 100024.018.01435
1500 × 110024.019.21250
1500 × 120024.020.41065
1500 × 140024.022.8695
1600 × 100025.218.01650
1600 × 110025.219.21465
1600 × 120025.220.41280
1600 × 140025.222.8910
1600 × 150025.224.0725
1800 × 110027.619.21895
1800 × 120027.620.41710
1800 × 140027.622.81340
1800 × 150027.624.01155
1800 × 160027.625.2970
2000 × 12003020.42140
2000 × 14003022.81770
2000 × 15003024.01585
2000 × 16003025.21400
2000 × 18003027.61030

Technical Downloads

Product FAQs

What should I send for a Double-Flanged Tapers enquiry?

Send the required DN/OD and any main/branch or inlet/outlet size, working pressure, flange drilling or socket/pipe details, quantity, destination and any project drawing or document requirement.

What technical evidence is available for Double-Flanged Tapers?

The ISO2531 fixed-flange catalogue (pages 26-27) shows DN x dn, T, t and L rows plus Mass columns labelled PN10, PN16 and PN25, with taper drawing. Dimensions are confirmed against your enquiry before quotation.

Which details still require Aquafitting confirmation?

Confirm current size availability, working pressure, material, gasket, coating, flange drilling or socket/pipe interface, dimensions, mass, standard applicability, documents and project suitability before quotation.

Product selection

product name; required DN/OD and any main/branch or inlet/outlet size; working pressure or pressure class; flange drilling or socket/pipe details; material/coating requirement; quantity; destination; required documents; project drawing if available

Request a Quote

Double-Flanged Tapers

Aquafitting Double-Flanged Tapers product view on a controlled background.

Connect flanged components of different nominal sizes. A double-flanged reducer connects different nominal flange sizes. Use the dedicated product drawing to match the installation arrangement.

Connection interface
Connects to a compatible mating flange. Select by flange DN, drilling, gasket and service conditions; the flange interface does not imply compatibility with every pipe material.

Product summary · PDF · English

Request a Quote

Overview

Catalogue dimensions

DN × dn
T
t
L
100 × 80
7.2
7.0
200
150 × 80
7.8
7.0
400
150 × 100
7.8
7.2
300
200 × 100
8.4
7.2
600
200 × 150
8.4
7.8
300
250 × 150
9.0
7.8
600
250 × 200
9.0
8.4
300
300 × 150
9.6
7.8
650
300 × 200
9.6
8.4
600
300 × 250
9.6
9.0
300
350 × 200
10.2
8.4
650
350 × 250
10.2
9.0
600
350 × 300
10.2
9.6
300
400 × 200
10.8
8.4
700
400 × 250
10.8
9.0
650
400 × 300
10.8
9.6
300
400 × 300
10.8
9.6
600
400 × 350
10.8
10.2
300
450 × 250
11.4
9.0
700
450 × 300
11.4
9.6
650
450 × 350
11.4
10.2
600
450 × 400
11.4
10.8
300
500 × 300
12.0
9.6
700
500 × 350
12.0
10.2
650
500 × 400
12.0
10.8
600
500 × 450
12.0
11.4
300
600 × 350
13.2
10.2
750
600 × 400
13.2
10.8
700
600 × 450
13.2
11.4
650
600 × 500
13.2
12.0
600
700 × 400
14.4
10.8
800
700 × 450
14.4
11.4
750
700 × 500
14.4
12.0
700
700 × 600
14.4
13.2
600
800 × 450
15.6
11.4
900
800 × 500
15.6
12.0
800
800 × 600
15.6
13.2
700
800 × 700
15.6
14.4
600
900 × 500
16.8
12.0
1000
900 × 600
16.8
13.2
800
900 × 700
16.8
14.4
700
900 × 800
16.8
15.6
600
1000 × 600
18
13.2
1000
1000 × 700
18
14.4
800
1000 × 800
18
15.6
700
1000 × 900
18
16.8
600
1100 × 700
19.2
14.4
1000
1100 × 800
19.2
15.6
800
1100 × 900
19.2
16.8
700
1100 × 1000
19.2
18.0
600
1200 × 700
20.4
14.4
1345
1200 × 800
20.4
15.6
1160
1200 × 900
20.4
16.8
975
1200 × 1000
20.4
18.0
790
1200 × 1100
20.4
19.2
605
1400 × 800
22.8
15.6
1590
1400 × 900
22.8
16.8
1405
1400 × 1000
22.8
18.0
1220
1400 × 1100
22.8
19.2
1035
1400 × 1200
22.8
20.4
850
1500 × 900
24.0
16.8
1620
1500 × 1000
24.0
18.0
1435
1500 × 1100
24.0
19.2
1250
1500 × 1200
24.0
20.4
1065
1500 × 1400
24.0
22.8
695
1600 × 1000
25.2
18.0
1650
1600 × 1100
25.2
19.2
1465
1600 × 1200
25.2
20.4
1280
1600 × 1400
25.2
22.8
910
1600 × 1500
25.2
24.0
725
1800 × 1100
27.6
19.2
1895
1800 × 1200
27.6
20.4
1710
1800 × 1400
27.6
22.8
1340
1800 × 1500
27.6
24.0
1155
1800 × 1600
27.6
25.2
970
2000 × 1200
30
20.4
2140
2000 × 1400
30
22.8
1770
2000 × 1500
30
24.0
1585
2000 × 1600
30
25.2
1400
2000 × 1800
30
27.6
1030

Source: AQUAFITTING fixed-flange and T-type joint catalogue, page 26–27. Dimension symbols follow the corresponding source drawing. Confirm the selected configuration and current dimensions before ordering. The two 400 × 300 length variants are retained separately; confirm the selected configuration.

100 × 80

T: 7.2 · t: 7.0 · L: 200

150 × 80

T: 7.8 · t: 7.0 · L: 400

150 × 100

T: 7.8 · t: 7.2 · L: 300

200 × 100

T: 8.4 · t: 7.2 · L: 600

200 × 150

T: 8.4 · t: 7.8 · L: 300

250 × 150

T: 9.0 · t: 7.8 · L: 600

250 × 200

T: 9.0 · t: 8.4 · L: 300

300 × 150

T: 9.6 · t: 7.8 · L: 650

300 × 200

T: 9.6 · t: 8.4 · L: 600

300 × 250

T: 9.6 · t: 9.0 · L: 300

350 × 200

T: 10.2 · t: 8.4 · L: 650

350 × 250

T: 10.2 · t: 9.0 · L: 600

350 × 300

T: 10.2 · t: 9.6 · L: 300

400 × 200

T: 10.8 · t: 8.4 · L: 700

400 × 250

T: 10.8 · t: 9.0 · L: 650

400 × 300

T: 10.8 · t: 9.6 · L: 300

400 × 300

T: 10.8 · t: 9.6 · L: 600

400 × 350

T: 10.8 · t: 10.2 · L: 300

450 × 250

T: 11.4 · t: 9.0 · L: 700

450 × 300

T: 11.4 · t: 9.6 · L: 650

450 × 350

T: 11.4 · t: 10.2 · L: 600

450 × 400

T: 11.4 · t: 10.8 · L: 300

500 × 300

T: 12.0 · t: 9.6 · L: 700

500 × 350

T: 12.0 · t: 10.2 · L: 650

500 × 400

T: 12.0 · t: 10.8 · L: 600

500 × 450

T: 12.0 · t: 11.4 · L: 300

600 × 350

T: 13.2 · t: 10.2 · L: 750

600 × 400

T: 13.2 · t: 10.8 · L: 700

600 × 450

T: 13.2 · t: 11.4 · L: 650

600 × 500

T: 13.2 · t: 12.0 · L: 600

700 × 400

T: 14.4 · t: 10.8 · L: 800

700 × 450

T: 14.4 · t: 11.4 · L: 750

700 × 500

T: 14.4 · t: 12.0 · L: 700

700 × 600

T: 14.4 · t: 13.2 · L: 600

800 × 450

T: 15.6 · t: 11.4 · L: 900

800 × 500

T: 15.6 · t: 12.0 · L: 800

800 × 600

T: 15.6 · t: 13.2 · L: 700

800 × 700

T: 15.6 · t: 14.4 · L: 600

900 × 500

T: 16.8 · t: 12.0 · L: 1000

900 × 600

T: 16.8 · t: 13.2 · L: 800

900 × 700

T: 16.8 · t: 14.4 · L: 700

900 × 800

T: 16.8 · t: 15.6 · L: 600

1000 × 600

T: 18 · t: 13.2 · L: 1000

1000 × 700

T: 18 · t: 14.4 · L: 800

1000 × 800

T: 18 · t: 15.6 · L: 700

1000 × 900

T: 18 · t: 16.8 · L: 600

1100 × 700

T: 19.2 · t: 14.4 · L: 1000

1100 × 800

T: 19.2 · t: 15.6 · L: 800

1100 × 900

T: 19.2 · t: 16.8 · L: 700

1100 × 1000

T: 19.2 · t: 18.0 · L: 600

1200 × 700

T: 20.4 · t: 14.4 · L: 1345

1200 × 800

T: 20.4 · t: 15.6 · L: 1160

1200 × 900

T: 20.4 · t: 16.8 · L: 975

1200 × 1000

T: 20.4 · t: 18.0 · L: 790

1200 × 1100

T: 20.4 · t: 19.2 · L: 605

1400 × 800

T: 22.8 · t: 15.6 · L: 1590

1400 × 900

T: 22.8 · t: 16.8 · L: 1405

1400 × 1000

T: 22.8 · t: 18.0 · L: 1220

1400 × 1100

T: 22.8 · t: 19.2 · L: 1035

1400 × 1200

T: 22.8 · t: 20.4 · L: 850

1500 × 900

T: 24.0 · t: 16.8 · L: 1620

1500 × 1000

T: 24.0 · t: 18.0 · L: 1435

1500 × 1100

T: 24.0 · t: 19.2 · L: 1250

1500 × 1200

T: 24.0 · t: 20.4 · L: 1065

1500 × 1400

T: 24.0 · t: 22.8 · L: 695

1600 × 1000

T: 25.2 · t: 18.0 · L: 1650

1600 × 1100

T: 25.2 · t: 19.2 · L: 1465

1600 × 1200

T: 25.2 · t: 20.4 · L: 1280

1600 × 1400

T: 25.2 · t: 22.8 · L: 910

1600 × 1500

T: 25.2 · t: 24.0 · L: 725

1800 × 1100

T: 27.6 · t: 19.2 · L: 1895

1800 × 1200

T: 27.6 · t: 20.4 · L: 1710

1800 × 1400

T: 27.6 · t: 22.8 · L: 1340

1800 × 1500

T: 27.6 · t: 24.0 · L: 1155

1800 × 1600

T: 27.6 · t: 25.2 · L: 970

2000 × 1200

T: 30 · t: 20.4 · L: 2140

2000 × 1400

T: 30 · t: 22.8 · L: 1770

2000 × 1500

T: 30 · t: 24.0 · L: 1585

2000 × 1600

T: 30 · t: 25.2 · L: 1400

2000 × 1800

T: 30 · t: 27.6 · L: 1030

Product overview

Connect flanged components of different nominal sizes.

Connection interface

Connects to a compatible mating flange. Select by flange DN, drilling, gasket and service conditions; the flange interface does not imply compatibility with every pipe material.

Connection arrangement

Larger flange DN → smaller flange dn

Request a Quote

Technical evidence

Review the product identity and available resources, then send the required size or measured outside diameter, pipe material, connection details, operating conditions, quantity, destination and supporting files.

Double-Flanged Tapers catalogue drawing, available on request.
Double-Flanged Tapers catalogue dimension table, available on request.

Connection and selection

Two flange sizes

Specify both nominal sizes and the installation length. Use the taper drawing for the selected pair.

Flange interface

Match the flange DN and drilling to the mating component. Select the gasket and fasteners for the specified assembly.

Size and installation

Check the product-specific drawing for the required lengths and clearances. Confirm current pressure applicability and available sizes for the project.

Request a Quote

Product selection

product name; required DN/OD and any main/branch or inlet/outlet size; working pressure or pressure class; flange drilling or socket/pipe details; material/coating requirement; quantity; destination; required documents; project drawing if available

Request a Quote

Product FAQs

What should I send for a Double-Flanged Tapers enquiry?

Send the required DN/OD and any main/branch or inlet/outlet size, working pressure, flange drilling or socket/pipe details, quantity, destination and any project drawing or document requirement.

What technical evidence is available for Double-Flanged Tapers?

The ISO2531 fixed-flange catalogue (pages 26-27) shows DN x dn, T, t and L rows plus Mass columns labelled PN10, PN16 and PN25, with taper drawing. Dimensions are confirmed against your enquiry before quotation.

Which details still require Aquafitting confirmation?

Confirm current size availability, working pressure, material, gasket, coating, flange drilling or socket/pipe interface, dimensions, mass, standard applicability, documents and project suitability before quotation.

Materials & standards

Body
Ductile iron EN-GJS-450-10 or EN-GJS-500-7


Gaskets (where supplied)
EPDM (WRAS approved material) or NBR


Bolts and nuts (where supplied)
Zinc-plated carbon steel, Dacromet-coated or stainless steel


Coating
Epoxy powder coating, 250 μm nominal (WRAS approved material)


Pressure rating
PN10, PN16, PN25 or PN40, as shown in the size table for each model


Standard
ISO 2531


Material, bolt and coating options are confirmed in the quotation.
View certificates →

Double-Flanged 45° Bend

Double-Flanged 45° Bend

Fixed Flange Fittings

Double-Flanged 45° Bend for 45-degree fixed-flange direction-change enquiries. Send the required sizes, working pressure, connection details and project drawing for review.

Double-Flanged 11.25° Bend

Double-Flanged 11.25° Bend

Fixed Flange Fittings

Double-Flanged 11.25° Bend for 11.25-degree fixed-flange direction-change enquiries. Send the required sizes, working pressure, connection details and project drawing for review.

All-Flanged Tees

All-Flanged Tees

Fixed Flange Fittings

All-Flanged Tees for fixed-flange branch enquiries with specified main and branch sizes. Send the required sizes, working pressure, connection details and project drawing for review.

bottom of page