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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

½” 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 ¾”

3 ¾”

3 ¾”

4 ½”

4 ½”

80mm

95mm

95mm

95mm

95mm

3 ½”

3 ¾”

3 ¾”

Bolt Circle Dia.

2 5/8”

2 5/8”

2 5/8”

3 ¼”

3 ¼”

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

½”

½”

½”

5/8”

5/8”

M10

M12

M12

M12

M12

½”

½”

½”

¾” 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 ½”

4 ½”

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 ¼”

3 ¼”

65mm

75mm

75mm

75mm

75mm

2 ¾”

3 ¼”

3 ¼”

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

½”

½”

½”

5/8”

5/8”

M10

M12

M12

M12

M12

½”

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 ½”

4 ½”

4 ¾”

4 ¾”

4 ¾”

100mm

115mm

115mm

115mm

115mm

4 ¼”

4 7/8”

4 7/8”

Bolt Circle Dia.

3 ¼”

3 ¼”

3 7/16”

3 7/16”

3 7/16”

75mm

85mm

85mm

85mm

85mm

3 1/8”

3 ½”

3 ½”

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

½”

½”

½”

5/8”

5/8”

M10

M12

M12

M12

M12

½”

5/8”

5/8”

1 ¼” 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 ¾”

4 ¾”

5 ¼”

5 ¼”

5 ¼”

120mm

140mm

140mm

140mm

140mm

4 5/8”

5 ¼”

5 ¼”

Bolt Circle Dia.

3 7/16”

3 7/16”

3 7/8”

3 7/8”

3 7/8”

90mm

100mm

100mm

100mm

100mm

3 ½”

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

½”

½”

½”

5/8”

5/8”

M12

M16

M16

M16

M16

½”

5/8”

5/8”

1 ½” 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 ¼”

5 ¼”

5 ½”

5 ½”

5 ½”

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 ½”

4 ½”

No.of Bolts

4

4

4

4

4

4

4

4

4

4

4

4

4

Size Of Bolts

½”

½”

5/8”

5/8”

5/8”

M12

M16

M16

M16

M16

½”

¾”

¾”

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 ½”

6 ½”

6 ½”

140MM

165MM

165MM

165MM

165MM

6”

6 ½”

6 ½”

Bolt Circle Dia.

4 ½”

4 ½”

5”

5”

5”

110MM

125MM

125MM

125MM

125MM

4 ¾”

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”

¾”

M12

M16

M16

M16

M16

5/8”

5/8”

5/8”

2 ½” 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 ½”

6 ½”

6 ½”

160MM

185MM

185MM

185MM

185MM

7”

7 ½”

7 ½”

Bolt Circle Dia.

5”

5”

5 ¾”

5 ¾”

5 ¾”

130MM

145MM

145MM

145MM

145MM

5 ½”

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”

¾”

M12

M16

M16

M16

M16

5/8”

5/8”

¾”

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 ¼”

7 ¼”

8”

8”

8”

190MM

200MM

200MM

200MM

200MM

7 ½”

8 ¼”

8 ¼”

Bolt Circle Dia.

5 ¾”

5 ¾”

6 ½”

6 ½”

6 ½”

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”

¾”

M16

M16

M16

M16

M16

5/8”

¾”

¾”

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 ½”

8 ½”

9”

9”

9”

210MM

220MM

220MM

235MM

235MM

9”

10”

10 ¾”

Bolt Circle Dia.

7”

7”

7 ½”

7 ½”

7 ½”

170MM

180MM

180MM

190MM

190MM

7 ½”

7  7/8”

8 ½”

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”

¾”

M16

M16

M16

M20

M20

5/8”

¾”

7/8”

Size Of Bolts

5/8”

5/8”

5/8”

5/8”

¾”

M16

M16

M16

M16

M16

5/8”

¾”

¾”

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.

8¼”

8¼”

9¼”

9¼”

9¼”

200MM

210MM

210MM

220MM

220MM

8½”

9¼”

10½”

No.of Bolts

8

8

8

8

8

8

8

8

8

8

8

8

8

Size Of Bolts

5/8”

5/8”

¾”

¾”

7/8”

M16

M16

M16

M24

M24

¾”

¾”

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.

9¼”

9¼”

10¼”

10¼”

10¼”

225MM

240MM

240MM

250MM

250MM

9½”

10 5/8”

11½”

No.of Bolts

8

8

12

12

12

8

8

8

8

8

8

12

12

Size Of Bolts

5/8”

¾”

¾”

¾”

7/8”

M16

M20

M20

M24

M24

¾”

¾”

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.

13¼”

13¼”

14½”

14½”

14½”

320MM

340MM

340MM

360MM

375MM

13½”

15”

16½”

Bolt Circle Dia.

11½”

11½”

12¾”

12¾”

12¾”

280MM

295MM

295MM

310MM

320MM

11¾”

13”

13¾”

No.of Bolts

8

8

12

12

12

8

8

12

12

12

8

12

12

Size Of Bolts

5/8”

¾”

¾”

¾”

7/8”

M16

M20

M20

M24

M27

¾”

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”

17½”

20”

Bolt Circle Dia.

14”

14”

15”

15”

15”

335MM

350MM

355MM

370MM

385MM

14 ¼”

15 ¼”

17”

No.of Bolts

8

12

12

12

12

12

12

12

12

12

12

16

16

Size Of Bolts

¾”

¾”

7/8”

7/8”

1”

M16

M20

M24

M27

M30

7/8”

1”

1¼”

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”

19¼”

19¼”

19¼”

440MM

445MM

460MM

485MM

515MM

19”

20½”

22”

Bolt Circle Dia.

16”

16”

17¼”

17¼”

17¼”

395MM

400MM

410MM

430MM

450MM

17”

17¾”

19¼”

No.of Bolts

12

12

16

16

16

12

12

12

16

16

12

16

20

Size Of Bolts

¾”

7/8”

7/8”

7/8”

1”

M20

M20

M24

M27

M30

7/8”

1 1/8”

1¼”