Metal Expansion Joints

METAL EXPANSION JOINTS

Model MC

Self-equalizing, ring controlled expansion joints

As in the Model MN expansion joints, the Model MC utilizes a hydroformed bellows. It also provides the ultimate in control and safety with self equalizing control rings.

Maximum Working Pressure: 300 psi*

Working Temperature: 500°F

Test Pressure: 450 psi

End Fittings:

Flanges: ANSI B16.5

Weld Ends: A 53 / A 106

Bellows: Hydroformed T304 S/S

* 300 psi is the bellows rating. Flange rating must also be considered. Full vacuum rating.

 Model MC
Model MC
SIZE # CORR COMPRESSION*
(in)		 FLANGED ENDS WELD ENDS
SINGLE DOUBLE** SINGLE DOUBLE**
OAL
(in)		 WT
(lbs)		 OAL
(in)		 WT
(lbs)		 OAL
(in)		 WT
(lbs)		 OAL
(in)		 WT
(lbs)
2-1/2" & 3"

Effective
Area =
21 sq in

 1 3/8 7-1/4 28 - - 13-5/8 25 - -
2 3/4 8-3/4 35 21-1/8 90 15-1/4 30 27-1/2 85
3 1-1/8 10-3/8 42 24-3/8 109 16-7/8 37 30-3/4 100
4 1-1/2 12 49 27-5/8 125 18-1/2 45 34 115
5 1-7/8 13-5/8 57 30-7/8 134 20-1/8 52 37-1/4 130
6 2-1/4 15-1/4 64 34-1/8 149 21-3/4 60 40-1/2 145
7 2-5/8 16-7/8 72 37-3/8 165 23-3/8 68 43-3/4 161
8 3 18-1/2 80 40-5/8 175 25 70 47 177
9 3-3/8 20-1/4 88 43-7/8 197 26-5/8 84 50-1/4 195
10 3-3/4 21-3/4 95 47-1/8 211 28-1/4 91 53-1/2 207
11 4-1/8 23-1/8 103 50-3/8 227 29-7/8 99 56-3/4 224
12 4-1/2 24-3/4 110 53-5/8 235 31-1/2 100 60 241
13 4-7/8 26-3/8 118 - - 33-1/8 114 - -
4"

Effective
Area =
29 sq in

 1 3/8 7-1/4 40 - - 13-5/8 30 - -
2 3/4 8-3/4 50 21-1/8 125 15-1/4 40 27-1/2 105
3 1-1/8 10-3/8 60 24-3/8 135 16-7/8 49 30-3/4 123
4 1-1/2 12 68 27-5/8 151 18-1/2 58 34 141
5 1-7/8 13-5/8 77 30-7/8 169 20-1/8 67 37-1/4 139
6 2-1/4 15-1/4 85 34-1/8 186 21-3/4 76 40-1/2 177
7 2-5/8 16-7/8 90 37-3/8 200 23-3/8 85 43-3/4 195
8 3 18-1/2 100 40-5/8 219 25 94 47 213
9 3-3/8 20-1/4 110 43-7/8 238 26-5/8 103 50-1/4 231
10 3-3/4 21-3/4 120 47-1/8 257 28-1/4 112 53-1/2 250
11 4-1/8 23-1/8 127 50-3/8 284 29-7/8 122 56-3/4 269
12 4-1/2 24-3/4 135 53-5/8 311 31-1/2 132 60 289
13 4-7/8 26-3/8 143 - - 33-1/8 143 - -
5"

Effective
Area =
40 sq in

 1 3/8 7-1/4 50 - - 13-5/8 40 - -
2 3/4 8-3/4 60 21-1/8 135 15-1/4 50 27-1/2 125
3 1-1/8 10-3/8 70 24-3/8 155 16-7/8 60 30-3/4 145
4 1-1/2 12 80 27-5/8 177 18-1/2 72 34 170
5 1-7/8 13-5/8 90 30-7/8 198 20-1/8 83 37-1/4 190
6 2-1/4 15-1/4 100 34-1/8 220 21-3/4 95 40-1/2 215
7 2-5/8 16-7/8 115 37-3/8 250 23-3/8 105 43-3/4 230
8 3 18-1/2 125 40-5/8 266 25 116 47 257
9 3-3/8 20-1/4 135 43-7/8 288 26-5/8 128 50-1/4 281
10 3-3/4 21-3/4 145 47-1/8 310 28-1/4 140 53-1/2 305
11 4-1/8 23-1/8 160 50-3/8 335 29-7/8 150 56-3/4 325
12 4-1/2 24-3/4 170 53-5/8 355 31-1/2 160 60 345
13 4-7/8 26-3/8 180 - - 33-1/8 171 - -
6"

Effective
Area =
62 sq in

 1 3/4 9-1/2 95 - - 19 90 - -
2 1-1/2 12-3/4 120 29-1/4 270 22-1/4 110 38-3/4 260
3 2-1/4 16 145 35-3/4 320 25-1/2 135 45-1/4 310
4 3 19-1/4 170 42-1/4 395 28-3/4 158 51-3/4 356
5 3-3/4 22-1/2 205 48-3/4 425 32 180 58-1/4 400
6 4-1/2 25-3/4 230 55-1/4 470 35-1/4 200 64-3/4 425
7 5-1/4 29 255 61-3/4 520 38-1/2 225 71-1/4 475
8 6 32-1/4 280 68-1/4 570 41-3/4 250 77-3/4 540
9 6-3/4 35-1/2 305 74-3/4 625 45 280 84-1/4 600
10 7-1/2 38-3/4 320 81-1/4 675 48-1/4 315 90-3/4 670
8"

Effective
Area =
92 sq in

 1 3/4 9-1/2 135 - - 19 125 - -
2 1-1/2 12-3/4 165 29-1/4 357 22-1/4 152 38-3/4 344
3 2-1/4 16 190 35-3/4 410 25-1/2 180 45-1/4 400
4 3 19-1/4 225 42-1/4 475 28-3/4 210 51-3/4 460
5 3-3/4 22-1/2 250 48-3/4 490 32 240 58-1/4 520
6 4-1/2 25-3/4 280 55-1/4 590 35-1/4 270 64-3/4 580
7 5-1/4 29 310 61-3/4 650 38-1/2 300 71-1/4 640
8 6 32-1/4 335 68-1/4 705 41-3/4 330 77-3/4 700
9 6-3/4 35-1/2 375 74-3/4 775 45 360 84-1/4 760
10 7-1/2 38-3/4 415 81-1/4 845 48-1/4 390 90-3/4 820
10"

Effective
Area =
135 sq in

 1 3/4 10-1/2 165 - - 19 150 - -
2 1-1/2 13-3/4 200 29-1/4 442 22-1/4 182 38-3/4 424
3 2-1/4 17 240 35-3/4 515 25-1/2 215 45-1/4 490
4 3 20-1/4 275 42-1/4 550 28-3/4 250 51-3/4 560
5 3-3/4 23-1/2 300 48-3/4 640 32 280 58-1/4 620
6 4-1/2 26-3/4 340 55-1/4 715 35-1/4 315 64-3/4 690
7 5-1/4 30 375 61-3/4 785 38-1/2 350 71-1/4 760
8 6 33-1/4 400 68-1/4 840 41-3/4 380 77-3/4 820
9 6-3/4 36-1/2 440 74-3/4 915 45 415 84-1/4 890
10 7-1/2 39-3/4 475 81-1/4 985 48-1/4 450 90-3/4 960
12"

Effective
Area =
175 sq in

 1 3/4 11 280 - - 19 175 - -
2 1-1/2 14-1/4 320 32-1/2 590 22-1/4 210 40-3/4 480
3 2-1/4 17-1/2 365 39 675 25-1/2 250 47-1/4 560
4 3 20-3/4 405 45-1/2 755 28-3/4 290 53-3/4 650
5 3-3/4 24 445 52 835 32 330 60-1/4 720
6 4-1/2 27-1/4 485 58-1/2 875 35-1/4 370 66-3/4 800
7 5-1/4 30-1/2 525 65 995 38-1/2 410 73-3/4 880
8 6 33-3/4 570 71-1/2 1075 41-3/4 445 79-3/4 950
9 6-3/4 37 610 78 1160 45 490 86-1/4 1040
10 7-1/2 40-1/4 650 84-1/2 1235 48-1/4 525 92-3/4 1110
14"

Effective
Area =
205 sq in

 1 3/4 13-1/4 252 - - 14-1/2 127 - -
2 1-1/2 15-1/4 286 33 597 16-1/2 161 35 472
3 2-1/4 17-1/4 319 37 663 18-1/2 194 39 538
4 3 19-1/4 351 41 727 20-1/2 226 43 602
5 3-3/4 21-1/4 384 45 793 22-1/2 259 47 668
6 4-1/2 23-1/4 417 49 859 24-1/2 292 51 734
7 5-1/4 25-1/4 450 53 925 26-1/2 325 55 800
8 6 27-1/4 483 57 991 28-1/2 358 59 866
9 6-3/4 29-1/4 516 61 1057 30-1/2 391 63 932
10 7-1/2 31-1/4 549 65 1123 32-1/2 424 67 998
16"

Effective
Area =
268 sq in

 1 3/4 13-1/4 295 - - 14-1/2 158 - -
2 1-1/2 15-1/4 330 33 673 16-1/2 193 35 536
3 2-1/4 17-1/4 365 37 743 18-1/2 228 39 606
4 3 19-1/4 400 41 813 20-1/2 263 43 676
5 3-3/4 21-1/4 435 45 883 22-1/2 298 47 746
6 4-1/2 23-1/4 472 49 957 24-1/2 335 51 820
7 5-1/4 25-1/4 508 53 1029 26-1/2 371 55 892
8 6 27-1/4 542 57 1097 28-1/2 405 59 960
9 6-3/4 29-1/4 578 61 1169 30-1/2 441 63 1032
10 7-1/2 31-1/4 614 65 1241 32-1/2 477 67 1104
18"

Effective
Area =
325 sq in

 1 13/16 10-5/16 378 - - 14-1/2 189 - -
2 1-5/8- 12-3/8 416 30 800 16-9/16 227 35-1/8 610
3 2-7/16 14-7/16 456 34-1/8 880 18-5/8 267 39-1/4 690
4 3-1/4- 16-1/2 494 38-1/4 955 20-11/16 305 43-3/8 766
5 4-1/16 18-9/16 534 42-3/8 1035 22-3/4 345 47-1/2 846
6 4-7/8- 20-5/8 573 46-1/2 1113 24-13/16 384 51-5/8 925
7 5-11/16 22-11/16 613 50-5/8 1195 26-7/8 424 55-3/4 1005
8 6-1/2- 24-3/4 651 54-3/4 1273 28-15/16 362 59-7/8 1080
9 7-5/16 26-13/16 691 58-7/8 1350 31 502 64 1160
10 8-1/8 28-7/8 730 63 1430 33-1/16 541 68-1/8 1238
20"

Effective
Area =
392 sq in

 1 13/16 11-13/16 460 - - 14-1/2 210 - -
2 1-5/8- 13-7/8 513 33-1/2 1076 16-9/16 263 37-1/8 826
3 2-7/16 15-15/16 566 37-5/8 1182 18-5/8 316 40-1/4 932
4 3-1/4 18 619 41-3/4 1288 20-11/16 369 45-3/8 1038
5 4-1/16 20-1/16 672 45-1/8 1394 22-3/4 422 49-1/2 1144
6 4-7/8- 22-1/8 725 50 1500 24-13/16 475 53-5/8 1250
7 5-11/16 24-3/16 778 55-1/8 1606 26-7/8 528 57-3/4 1356
8 6-1/2- 26-1/4 831 58-5/8 1702 28-15/16 581 61-7/8 2008
9 7-5/16 28-5/16 884 62-1/8 1818 31 634 66 1298
10 8-1/8- 30-3/8 937 65-5/8 1924 33-1/16 687 70-1/8 1674
24"

Effective
Area =
540 sq in

 1 13/16 12-13/16 539 - - 14-1/2 240 - -
2 1-5/8- 14-7/8 585 34-1/4 1180 16-9/16 294 38 888
3 2-7/16 16-15/16 630 38-3/8 1275 18-5/8 345 40-1/4 990
4 3-1/4 19 675 42-1/2 1373 20-11/16 398 45-3/8 1096
5 4-1/16 21 720 45-7/8 1470 22-3/4 452 49-1/2 1204
6 4-7/8 22-7/8 766 50-3/4 1576 24-13/16 510 53-5/8 1320
7 5-11/16 25 811 55-7/8 1671 26-7/8 560 57-3/4 1420
8 6-1/2 27 857 59-3/8 1767 28-15/16 610 61-7/8 1520
9 7-5/16 29 903 62-7/8 1857 31 654 66 1603
10 8-1/8 31-1/8 957 66-3/8 1974 33-1/16 717 70-1/8 1734

ADDITIONAL BELLOWS DATA

SIZE BELLOWS EFFECTIVE AREA
(Inches Squared)		 BELLOWS SPRING CONSTANT
(Lbs./Inch/Corrugation)
2-1/2 21 2600
3 21 2600
4 29 2800
5 40 3100
6 62 3500
8 92 3700
10 135 4000
12 175 4200
14 205 4400
16 268 4700
18 325 5000
20 392 5400
24 540 6200

Top
The Metraflex Company, 2323 W. Hubbard Street, Chicago, IL 60612 | 800-621-4347 | 312-738-3800 | Fax 312-738-0415 | Email for information.
Copyright © 2000-2006 Metraflex, Inc.  Metraflex, Metraloop, Fireloop and Cablesphere are registered trademarks of The Metraflex Company.
All Rights Reserved