Rubberexpansionjoint.com DA style molded dual arch rubber expansion joints are designed to absorb movements and stress on piping systems, compensate for pipe misalignment, reduce vibration and system noise. The style DA protects against start-up forces as well as system surges. All DA style joints come standard with ANSI 150# solid floating metallic flanges and metallic root rings. The design of the DA style does not contain any metallic reinforcement in the carcass of the bellows. Instead the carcass has a minimum of four layers of high tensile synthetic fabric. Each layer is impregnated with a rubber or synthetic compound. This allows movement and flexibility between the layers of fabric. The DA style design has a long radius arch allowing for self cleaning and thus eliminating the need for a filled arch. The DA style is the most economic choice when it comes to dual arch rubber expansion joints. The DA is available on request to meet the requirements of the U.S.C.G.

DUAL ARCH (DA)

Dimensions
Movement Distance
Operating Condition
Weight (LBS)
Pipe Size
O'all Length
Flange OD
Bolt Circle
Flange Thickness
No. of Bolt Holes
Bolt Hole Size
Threaded Hole Size
Axial Compression
Axial Extension
Lateral Deflection
Angular Deflection
Max w.p.
(psi)-3,-4
Max Vacuum
(in. of Hg)-5
Exp. Joint
+ Flanges
Control Unit
(2 Rod)-1,-2
1"
5"
4 1/4"
3 1/8"
0.55"
4
5/8"
1/2"-13
2"
1.188"
±1.75"
45°
225
26
4.00
5.50
1 1/4"
7"
4 5/8"
3 1/2"
0.55"
4
5/8"
1/2"-13
2"
1.188"
±1.75"
45°
225
26
5.25
5.50
1 1/2"
7"
5"
3 7/8"
0.55"
4
5/8"
1/2"-13
2"
1.188"
±1.75"
45°
225
26
6.00
5.50
2"
7"
6"
4 3/4"
0.63"
4
3/4"
5/8"-11
2"
1.188"
±1.75"
45°
225
26
8.50
6.75
2 1/2"
7"
7"
5 1/2"
0.71"
4
3/4"
5/8"-11
2"
1.188"
±1.75"
43°
225
26
11.25
8.00
3"
7"
7 1/2"
6"
0.71"
4
3/4"
5/8"-11
2"
1.188"
±1.75"
38°
225
26
13.75
8.00
4"
9"
9"
7 1/2"
0.71"
8
3/4"
5/8"-11
2.25"
1.375"
±1.562"
34°
225
26
19.25
7.50
5"
9"
10"
8 1/2"
0.79"
8
7/8"
3/4"-10
2.25"
1.375"
±1.562"
29°
225
26
22.50
8.00
6"
9"
11"
9 1/2"
0.87"
8
7/8"
3/4"-10
2.25"
1.375"
±1.562"
25°
225
26
28.00
9.00
8"
13"
13 1/2"
11 3/4"
0.87"
8
7/8"
3/4"-10
2.5"
1.375"
±1.375"
19°
225
26
46.00
13.00
10"
13"
16"
14 1/4"
0.95"
12
1"
7/8"-9
2.5"
1.375"
±1.375"
15°
225
26
63.00
25.25-1
12"
13"
19"
17"
0.95"
12
1"
7/8"-9
2.5"
1.375"
±1.375"
13°
225
26
88.00
28.01-1
14"
13.75"
21"
18 3/4"
1.02"
12
1 1/8"
1" -8
1.75"
1.118"
±1.118"
150
26
119.00
33.55-1
16"
13.75"
23 1/2"
21 1/4"
1.10"
16
1 1/8"
1" -8
1.75"
1.118"
±1.118"
150
26
147.00
41.00-2
18"
13.75"
25"
22 3/4"
1.18"
16
1 1/4"
1 1/8" -7
1.75"
1.118"
±1.118"
150
26
158.00
43.50-2
20"
13.75"
27 1/2"
25"
1.18"
20
1 1/4"
1 1/8" -7
1.75"
1.118"
±1.118"
150
26
185.00
44.50-2
24"
13.75"
32"
29 1/2"
1.18"
20
1 3/8"
1 1/4" -7
1.75"
1.118"
±1.118"
150
26
211.00
62.50-2

Size
100% EPDM
100% Neoprene
Nitrile Tube/Neoprene Cover
Control Unit (Control Rods)
Control Unit (Control Rods)
Pipe
Part No.
Price
Part No.
Price
Part No.
Price
Carbon Steel Zinc Plated
Part No. 
Price (SET)
T-304
Part No.
Price (SET)

Unthreaded Bolt Holes (Carbon Steel Zinc Plated Flanges)

1"
 $50.80  $40.55  $58.43  $34.65  $ 80.85
1 1/4"
 $50.80  $40.55  $58.43  $64.65  $80.85
1 1/2"
 $50.80  $40.55  $58.43  $34.65  $80.85
2"
 $55.87  $46.10  $64.25  $38.82  $90.58
2 1/2"
 $68.58  $57.55  $78.86  $39.93  $93.17
3"
 $81.28  $64.54  $93.47  $39.93  $93.17
4"
 $111.77  $94.72  $128.53  $39.93  $93.17
5"
 $129.55  $118.29  $148.98  $39.93  $93.17
6"
 $180.34  $164.59  $207.40  $45.60  $106.40
8"
 $244.48  $214.56  $281.15  $50.22  $117.18
10"
 $324.32  $275.26  $372.99  $85.53  $199.57
12"
 $457.49  $413.14  $526.11  $95.73  $223.37
14"
 $684.87  $597.91  $787.60  $123.60  $288.40
16"
 $834.30  $764.78  $959.45  $197.19  $460.11
18"
 $989.34  $906.90  $1,137.74  $224.04  $522.76
20"
 $1,254.36  $1,149.83  $1,442.51  $224.04  $522.76
24"
 $1,541.94  $1,413.45  $1,773.23  $268.77  $627.13

Unthreaded Bolt Holes (T-304 Flanges)

1"
 $182.08  $171.83  $189.71

 $34.65

 $80.85
1 1/4"
 $187.36  $177.11  $194.99  $34.65  $80.85
1 1/2"
 $192.13  $181.88  $199.76  $34.65  $80.85
2"
 $251.85  $242.07  $260.23  $38.82  $90.58
2 1/2"
 $270.85  $259.83  $281.14  $39.93  $93.17
3"
 $313.67  $296.94  $325.86  $39.93  $93.17
4"
 $377.34  $360.30  $394.11  $39.93  $93.17
5"
 $427.66  $416.40  $447.09  $39.93  $93.17
6"
 $511.33  $495.58  $538.39  $45.60  $106.40
8"
 $676.27  $646.35  $712.94  $50.22  $117.18
10"
 $856.69  $807.61  $905.34  $85.53  $199.57
12"
 $1,419.20  $1,374.85  $1,487.82  $95.73  $223.37
14"
 $2,016.18  $1,929.22  $2,118.91  $123.60  $288.40
16"
 $2,544.93  $2,475.41  $2,670.08  $197.19  $460.11
18"
 $2,940.15  $2,857.71  $3,088.55  $224.04  $522.76
20"
 $3,672.06  $3,567.53  $3,860.21  $224.04  $522.76
24"
 $4,563.90  $4,435.41  $4,795.19  $268.77  $627.13

Threaded Bolt Holes (Carbon Steel Zinc Plated Flanges)

1"
 $63.65  $50.80  $73.19  $34.65  $80.85
1 1/4"
 $63.65  $50.80  $73.19  $34.65  $80.85
1 1/2"
 $63.65  $50.80  $73.19  $34.65  $80.85
2"
 $67.72  $55.87  $77.88  $38.82  $90.58
2 1/2"
 $81.71  $68.58  $93.97  $39.93  $93.17
3"
 $102.35  $81.28  $117.71  $39.93  $93.17
4"
 $131.88  $111.17  $151.66  $39.93  $93.17
5"
 $141.88  $129.55  $163.17  $39.93  $93.17
6"
 $191.35  $174.63  $220.06  $45.60  $106.40
8"
 $278.57  $244.48  $320.35  $50.22  $117.18
10"
 $382.18  $324.34  $439.51  $85.53  $199.57
12"
 $506.59  $457.49  $582.58  $95.73  $223.37

U.S. COAST GUARD APPROVED: Unthreaded Bolt Holes

100% EPDM
 
Control Unit (Control Rods)
Control Unit (Control Rods)
SIZE
Carbon Steel Zinc Plated Flanges
Price
T-304 Flanges
Price
Carbon Steel Zinc Plated
Price
T-304
Price
1"
 $55.80  $187.08  $34.65  $80.85
1 1/4"
 $55.80  $192.36  $34.65  $80.85
1 1/2"
 $55.80  $197.13  $34.65  $80.85
2"
 $60.87  $256.85  $38.82  $90.58
2 1/2"
 $73.58  $275.85  $39.93  $93.17
3"
 $86.28  $318.67  $39.93  $93.17
4"
 $116.77  $382.34  $39.93  $93.17
5"
 $134.55  $432.66  $39.93  $93.17
6"
 $185.34  $516.33  $45.60  $106.40
8"
 $249.48  $681.27  $50.22  $117.18
10"
 $329.34  $861.69  $85.53  $199.57
12"
 $462.49  $1,424.20  $95.73  $223.37
14"
 $689.87  $2,021.18  $123.60  $288.40
16"
 $839.30  $2,549.93  $197.19  $460.11
18"
 $994.34  $2,945.15  $224.04  $522.76
20"
 $1,259.36  $3,677.06  $224.04  $522.76
24"
 $1,546.94  $4,568.90  $268.77  $627.13



Remarks:

  • The joint body is available in 3 standard combinations of the (tube/cover): EPDM/EPDM, Neoprene/Neoprene, and Nitrile/Neoprene. The body components (tube/cover) are also available in a combination of the following additional materials on special order: Neoprene, EPDM, Chlorobutyl, Butyl, Nitrile, Hypalon®, Viton®, natural rubber etc. Please see the materials table to determine what material is best for your application.
  • Standard flange drilling is ANSI 150#. Also available ANSI 25/125/250/300#, Navy, DN, BS, and JIS Drilling as well as others.
  • Standard flange material is carbon steel with a plated rust inhibitor. Also available T-304, T-316 and other alloys.
  • All Movements are non-concurrent. Contact www.rubberexpansionjoint.com to determine if your concurrent movements are acceptable.
  • See the “Control Unit” page to determine if your application requires control units. Control units must be used to protect the joint if the piping is not properly anchored. Control units are sold separately from the rubber joint.
  • Gaskets are not required with the DA series rubber joint as long as a “flat-face” type mating flange is used. If this is not an option and a “raised face” type flange is used then a ring gasket should be used to avoid cutting the sealing face of the rubber bead.

Notes:

  1. Control unit (3 Rod) Standard
  2. Control unit (4 Rod) Standard
  3. Maximum working pressure is based on 190° F. See Temperature vs. Pressure chart for operating temperatures above 190° F.
  4. Test pressure is 1.5 times working pressure. Burst pressure is approximately 4 times maximum working pressure.
  5. The vacuum rating is based on the joint installed in the neutral length. Joints should not be installed in the extended position on vacuum applications. Please advise if the joint will be subjected to full vacuum. The use of an internal vacuum ring may be necessary.

temperature vs working pressure charts installation and inspection instructions read notes and remarks