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Flange Tables

Please find following some details of flanges dimensions. Whenever ordering a valve always ensure where appropriate that it fits into the pipework as required. This will often mean having to specify the valve face-to face dimension, & what flange drilling is required.

Face-to-faces can vary massively depending on the valves make, type, pattern, figure, pressure rating and so forth. Flange dimensions however should usually fall into one of the 3 following categories:- Imperial, Metric, or ANSI. Somewhat unsurprisingly, imperial flanges are more common on older valves, whereas metric are more prelevant amongst newer valves. The ANSI flanges are an American standard, more common in chemical & petro-chemical industries.

Please note that the following tables are meant to be used for indication purposes only, & Whittle Valves accepts no responsibility from any accidental errors included.

Finally should you require any details relating to less common flanges sizes / ratings, ie. 7 flanges, or in excess of 12, then please do not hesitate to contact Whittle Valves

or 15mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

3

3

3

4

4

80mm

95mm

95mm

95mm

95mm

3

3

3

Bolt Circle Dia.

2 5/8

2 5/8

2 5/8

3

3

55mm

65mm

65mm

65mm

65mm

2 3/8

2 5/8

2 5/8

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

5/8

5/8

M10

M12

M12

M12

M12

or 20mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

4

4

4

4

4

90mm

105mm

105mm

105mm

105mm

3 7/8

4 5/8

4 5/8

Bolt Circle Dia.

2 7/8

2 7/8

2 7/8

3

3

65mm

75mm

75mm

75mm

75mm

2

3

3

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

5/8

5/8

M10

M12

M12

M12

M12

5/8

5/8

1 or 25mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

4

4

4

4

4

100mm

115mm

115mm

115mm

115mm

4

4 7/8

4 7/8

Bolt Circle Dia.

3

3

3 7/16

3 7/16

3 7/16

75mm

85mm

85mm

85mm

85mm

3 1/8

3

3

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

5/8

5/8

M10

M12

M12

M12

M12

5/8

5/8

1 or 32mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

4

4

5

5

5

120mm

140mm

140mm

140mm

140mm

4 5/8

5

5

Bolt Circle Dia.

3 7/16

3 7/16

3 7/8

3 7/8

3 7/8

90mm

100mm

100mm

100mm

100mm

3

3 7/8

3 7/8

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

5/8

5/8

M12

M16

M16

M16

M16

5/8

5/8

1 or 40mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

5

5

5

5

5

130mm

150mm

150mm

150mm

150mm

5

6 1/8

6 1/8

Bolt Circle Dia.

3 7/8

3 7/8

4 1/8

4 1/8

4 1/8

100mm

110mm

110mm

110mm

110mm

3 7/8

4

4

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

5/8

5/8

5/8

M12

M16

M16

M16

M16

2 or 50mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

6

6

6

6

6

140MM

165MM

165MM

165MM

165MM

6

6

6

Bolt Circle Dia.

4

4

5

5

5

110MM

125MM

125MM

125MM

125MM

4

5

5

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

8

8

Size Of Bolts

5/8

5/8

5/8

5/8

M12

M16

M16

M16

M16

5/8

5/8

5/8

2 or 65mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

6

6

6

6

6

160MM

185MM

185MM

185MM

185MM

7

7

7

Bolt Circle Dia.

5

5

5

5

5

130MM

145MM

145MM

145MM

145MM

5

5 7/8

5 7/8

No.of Bolts

4

4

8

8

8

4

4

4

8

8

4

8

8

Size Of Bolts

5/8

5/8

5/8

5/8

M12

M16

M16

M16

M16

5/8

5/8

3 or 80mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

7

7

8

8

8

190MM

200MM

200MM

200MM

200MM

7

8

8

Bolt Circle Dia.

5

5

6

6

6

150MM

160MM

160MM

160MM

160MM

6

6 5/8

6 5/8

No.of Bolts

4

4

8

8

8

4

8

8

8

8

4

8

8

Size Of Bolts

5/8

5/8

5/8

5/8

M16

M16

M16

M16

M16

5/8

4 or 100mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

8

8

9

9

9

210MM

220MM

220MM

235MM

235MM

9

10

10

Bolt Circle Dia.

7

7

7

7

7

170MM

180MM

180MM

190MM

190MM

7

7 7/8

8

No.of Bolts

4

8

8

8

8

4

8

8

8

8

8

8

8

Size Of Bolts

5/8

5/8

5/8

5/8

M16

M16

M16

M20

M20

5/8

7/8

Size Of Bolts

5/8

5/8

5/8

5/8

M16

M16

M16

M16

M16

5/8

5 or 125mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

10

10

11

11

11

240MM

250MM

250MM

270MM

270MM

10

11

13

Bolt Circle Dia.

8

8

9

9

9

200MM

210MM

210MM

220MM

220MM

8

9

10

No.of Bolts

8

8

8

8

8

8

8

8

8

8

8

8

8

Size Of Bolts

5/8

5/8

7/8

M16

M16

M16

M24

M24

1

6 or 150mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

11

11

12

12

12

265MM

285MM

285MM

300MM

300MM

10

11

13

Bolt Circle Dia.

9

9

10

10

10

225MM

240MM

240MM

250MM

250MM

9

10 5/8

11

No.of Bolts

8

8

12

12

12

8

8

8

8

8

8

12

12

Size Of Bolts

5/8

7/8

M16

M20

M20

M24

M24

1

8 or 200mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

13

13

14

14

14

320MM

340MM

340MM

360MM

375MM

13

15

16

Bolt Circle Dia.

11

11

12

12

12

280MM

295MM

295MM

310MM

320MM

11

13

13

No.of Bolts

8

8

12

12

12

8

8

12

12

12

8

12

12

Size Of Bolts

5/8

7/8

M16

M20

M20

M24

M27

7/8

1 1/8

10 or 250mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

16

16

17

17

17

375MM

395MM

405MM

425MM

450MM

16

17

20

Bolt Circle Dia.

14

14

15

15

15

335MM

350MM

355MM

370MM

385MM

14

15

17

No.of Bolts

8

12

12

12

12

12

12

12

12

12

12

16

16

Size Of Bolts

7/8

7/8

1

M16

M20

M24

M27

M30

7/8

1

1

12 or 350mm Flanges

 

IMPERIAL

METRIC

ANSI

 

Bst D

Bst E

Bst F

Bst H

Bst J

PN 6

PN 10

PN 16

PN 25

PN 40

150

300

600

Flange O.D.

18

18

19

19

19

440MM

445MM

460MM

485MM

515MM

19

20

22

Bolt Circle Dia.

16

16

17

17

17

395MM

400MM

410MM

430MM

450MM

17

17

19

No.of Bolts

12

12

16

16

16

12

12

12

16

16

12

16

20

Size Of Bolts

7/8

7/8

7/8

1

M20

M20

M24

M27

M30

7/8

1 1/8

1