Series SJ-21

The SJ-21 is the industry standard spool-type expansion joint. The SJ-21 is available in configurations from zero to four arches – depending on movement requirements – and 3 standard pressure ratings in a variety of elastomers. This hand-built expansion joint can be adapted to the most unusual or difficult applications.

The SJ-21 is the industry standard spool-type expansion joint. The SJ-21 is available in configurations from zero to four arches – depending on movement requirements – and 3 standard pressure ratings in a variety of elastomers. This hand-built expansion joint can be adapted to the most unusual or difficult applications. Available options include filled arches to eliminate settling of solids in the arch, Teflon liners for severe chemical service, soft cuff ends for slip-on installation, and concentric or eccentric tapered ends for connecting different pipe sizes.

Flange drilling is also available in all international standards or custom applications. For more information, contact EVR.

Control unit assemblies are recommended for all applications. To ensure correct length, customer should provide width of mating flange or flange specification.

Items are not normally supplied in multiple “open” arches, as squirm can occur. Minimum length of “face to face” can be reduced by eliminating the arch. Number of arches required depends upon anticipated total movement of the expansion joint.

Items are normally furnished with filled arches and movement shown should be reduced accordingly.

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inside diameter flange outside diameter bolt circle number of holes diameter holes ring inside diameter length FF per arch 1 length FF per arch 2 length FF per arch 3 length FF per arch 4 work pressure standard work pressure low work pressure high axial comp allowable movement axial comp total force axial ext allowable movement axial ext total force traverse def allowable movement traverse def total force est weight joint est weight rings
1" 4 1/4" 3 1/8" 4 5/8" 2 3/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 103 Pound 1/4" 76 Pound 1/4" 175 Pound 2 2.25
1 1/4" 4 5/8" 3 1/2" 4 5/8" 2 5/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 129 Pound 1/4" 96 Pound 1/4" 219 Pound 2.5 2.25
1 1/2" 5" 3 7/8" 4 5/8" 2 7/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 154 Pound 1/4" 115 Pound 1/4" 262 Pound 3 3
2" 6" 4 3/4" 4 3/4" 3 5/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 185 Pound 1/4" 138 Pound 1/4" 350 Pound 4 4
2 1/2" 7" 5 1/2" 4 3/4" 4 1/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 232 Pound 1/4" 172 Pound 1/4" 381 Pound 4.5 4.5
3" 7 1/2" 6" 4 3/4" 4 5/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 278 Pound 1/4" 207 Pound 1/4" 412 Pound 5.5 6
4" 9" 7 1/2" 8 3/4" 5 7/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 371 Pound 1/4" 276 Pound 1/4" 476 Pound 8 7.5
5" 10" 8 1/2" 8 7/8" 6 7/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 463 Pound 1/4" 344 Pound 1/4" 546 Pound 9 8
6" 11" 9 1/2" 8 7/8" 7 7/8" 6" 10" 12" 14" 165 psi 15 psi 200 psi 1/2" 556 Pound 1/4" 413 Pound 1/4" 617 Pound 11 9
8" 13 1/2" 11 3/4" 8 7/8" 9 7/8" 6" 10" 12" 14" 140 psi 15 psi 190 psi 3/4" 971 Pound 3/8" 689 Pound 3/8" 753 Pound 15 12
10" 16" 14 1/4" 12 1" 12 1/8" 8" 12" 14" 16" 140 psi 15 psi 190 psi 3/4" 1214 Pound 3/8" 861 Pound 3/8" 809 Pound 23 16
12" 19" 17" 12 1" 14 1/2" 8" 12" 14" 16" 140 psi 15 psi 190 psi 3/4" 1456 Pound 3/8" 1033 Pound 3/8" 948 Pound 34 22
14" 21" 18 3/4" 12 1 1/8" 16 1/2" 8" 12" 16" 20" 85 psi 15 psi 130 psi 1" 1274 Pound 1/2" 904 Pound 1/2" 1117 Pound 40 25
16" 23 1/2" 21 1/4" 16 1 1/8" 8" 12" 14" 16" 65 psi 15 psi 110 psi 1" 1456 Pound 1/2" 1033 Pound 1/2" 1286 Pound 47 27
18" 25" 22 3/4" 16 1 1/4" 20 1/2" 8" 12" 16" 20" 65 psi 15 psi 110 psi 1" 1638 Pound 1/2" 1163 Pound 1/2" 1420 Pound 56 29
20" 27 1/2" 25" 20 1 1/4" 22 5/8" 8" 12" 16" 20" 65 psi 15 psi 110 psi 1" 2152 Pound 1/2" 1505 Pound 1/2" 1588 Pound 67 35
22" 29 1/2" 27 1/4" 20 1 3/8" 24 5/8" 10" 14" 18" 22" 65 psi 15 psi 110 psi 1" 2367 Pound 1/2" 1656 Pound 1/2" 1648 Pound 70 44
24" 32" 29 1/2" 20 1 3/8" 26 5/8" 10" 14" 18" 22" 65 psi 15 psi 110 psi 1" 2582 Pound 1/2" 1807 Pound 1/2" 1706 Pound 79 46
26" 34 1/4" 31 3/4" 24 1 3/8" 28 7/8" 10" 14" 18" 22" 55 psi 15 psi 90 psi 1" 2869 Pound 1/2" 1990 Pound 1/2" 1829 Pound 100 50
28" 36 1/2" 34" 28 1 3/8" 30 7/8" 10" 14" 18" 22" 55 psi 15 psi 90 psi 1" 3090 Pound 1/2" 2143 Pound 1/2" 1952 Pound 102 58
30" 38 3/4" 36" 28 1 3/8" 32 7/8" 10" 14" 18" 22" 55 psi 15 psi 90 psi 1" 3311 Pound 1/2" 2297 Pound 1/2" 2075 Pound 117 55
34" 43 3/4" 40 1/2" 32 1 5/8" 37" 10" 14" 18" 18" 55 psi 15 psi 90 psi 1" 3752 Pound 1/2" 2603 Pound 1/2" 2801 Pound 112 91
36" 46" 42 3/4" 32 1 5/8" 39" 10" 14" 18" 22" 55 psi 15 psi 90 psi 1" 3973 Pound 1/2" 2756 Pound 1/2" 3164 Pound 143 99
40" 50 3/4" 47 1/4" 36 1 5/8" 43" 10" 14" 18" 22" 55 psi 15 psi 90 psi 1" 4414 Pound 1/2" 3062 Pound 1/2" 3338 Pound 173 108
42" 53" 49 1/2" 36 1 5/8" 45 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 4732 Pound 1/2" 3253 Pound 1/2" 3423 Pound 193 110
44" 55 1/4" 51 3/4" 40 1 3/4" 47 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 4958 Pound 1/2" 3407 Pound 1/2" 3571 Pound 198 136
48" 59 1/2" 56" 44 1 5/8" 51 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 5408 Pound 1/2" 3717 Pound 1/2" 3866 Pound 211 154
50" 61 3/4" 58 1/4" 44 1 7/8" 53 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 5634 Pound 1/2" 3872 Pound 1/2" 4012 Pound 240 163
54" 66 1/4" 62 3/4" 44 2" 57 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 6085 Pound 1/2" 4182 Pound 1/2" 4303 Pound 265 185
56" 68 3/4" 65" 48 2" 59 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 6310 Pound 1/2" 4341 Pound 1/2" 4448 Pound 288 203
60" 73" 69 1/4" 52 2" 63 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 6761 Pound 1/2" 4651 Pound 1/2" 4736 Pound 309 215
62" 75 3/4" 71 3/4" 52 2" 65 1/4" 12" 14" 18" 24" 55 psi 15 psi 80 psi 1" 7150 Pound 1/2" 4860 Pound 1/2" 4820 Pound 325 230
66" 80" 76" 52 2" 69 1/4" 12" 14" 18" 24" 55 psi 55 psi 80 psi 1" 7437 Pound 1/2" 5116 Pound 1/2" 5108 Pound 350 255
72" 86 1/2" 82 1/2" 60 2" 75 1/4" 12" 14" 18" 24" 45 psi 15 psi 70 psi 1" 8113 Pound 1/2" 5581 Pound 1/2" 5477 Pound 385 300
78" 93" 88 3/4" 60 2 1/8" 81 1/4" 12" 14" 18" 24" 45 psi 15 psi 70 psi 1" 8789 Pound 1/2" 6046 Pound 1/2" 5951 Pound 410 325
84" 99 3/4" 95 1/2" 64 2 1/4" 87 1/2" 12" 14" 18" 24" 45 psi 15 psi 70 psi 1" 9465 Pound 1/2" 6511 Pound 1/2" 6425 Pound 435 350
96" 113 1/4" 108 1/2" 68 2 1/2" 99 3/8" 12" 16" 18" 24" 45 psi 15 psi 70 psi 1" 10817 Pound 1/2" 7441 Pound 1/2" 7375 Pound 485 400
102" 120" 114 1/2" 72 2 5/8" 24 5/8" 12" 16" 20" 24" 45 psi 15 psi 70 psi 1" 19850 Pound 1/2" 12890 Pound 1/2" 8331 Pound 535 450
108" 126 3/4" 120 3/4" 72 2 5/8" 12" 16" 20" 24" 45 psi 15 psi 70 psi 1" 21915 Pound 1/2" 14506 Pound 1/2" 9785 Pound 585 500

All EVR products are guaranteed for one full year against defects resulting from faulty workmanship or materials. If any such product is found to be defective by reason of faulty workmanship or materials, upon written notice and return of the product, the defective product will be replaced by us free of charge, including the shipping charges for the replacement product. Claims for labour costs and other expenses required to replace such defective product, or to repair damage resulting from the use thereof will not be allowed by us. Our liability is limited to the price paid for the defective product. EVR Products shall not be bound by any warranty other than the above set forth unless such warranty shall be in writing. This literature is published in good faith and is believed to be reliable, however, EVR Products does not represent and/or warrant in any manner the above information and suggestions contained in this brochure. Data presented is the result of laboratory tests and field experience.