HDPE PIPEPIPE JOININGCUSTOM FABRICATIONHDPE FITTINGSSNAP-TITE CULVERT LINERSBUTTRESS-LOC SEWER LlNERS

HDPE Pipe
Pipe Joining Equipment
Custom HDPE Fabrication
HDPE Fittings
Snap-Tite
Culvert Liners
Buttress-Loc
Sewer Liners












HOME

Terms & Conditions

Career Opportunities

Request a Catalog
View Catalog CD-Rom
ISCO Line Card
 

BACK-UP RINGS

Ductile Iron Back-Up Ring I.P.S.

< Return to BACK-UP RINGS


Size
Part
Number
Outer
Diam.
(OD)
Thickness
(t)
Inside
Diam.
(ID)
Diam.
of  Bolt
Circle
(BC)
#
Bolt     
Holes
Min.
Diam. of
Bolt Holes
(D)
WT

2"
BU02IPS
6.0
0.75
2.63
4.75
4
0.750
2.4

3"
BU03IPS
7.5
0.94
3.75
6.00
4
0.750
3.9

4"
BU04IPS
9.0
0.94
4.75
7.50
8
0.750
5.2

6"
BU06IPS
11.0
1.00
6.88
9.50
8
0.875
7.3

8"
BU08IPS
13.5
1.12
8.88
11.75
8
0.875
11.1

10"
BU10IPS
16.0
1.19
11.00
14.25
12
1.000
18.7

12"
BU12IPS
19.0
1.25
13.13
17.00
12
1.000
27.3

14"
BU14IPS
21.0
1.38
14.38
18.75
12
1.125
30.3

16"
BU16IPS
23.5
1.44
16.38
21.25
16
1.125
36.6

18"
BU18IPS
25.0
1.56
18.38
22.75
16
1.250
46.0

20"
BU20IPS
27.5
1.69
20.38
25.00
20
1.250
58.0

22"
BU22IPS
29.5
1.88
22.22
27.25
20
1.375
66.0

24"
BU24IPS
32.0
1.88
24.38
29.50
20
1.375
75.0

28"
BU28IPS
36.5
2.06
28.38
34.00
28
1.375
103.0

32"
BU32IPS
41.75
2.06
32.12
38.50
28
1.625
118.0

36"
BU36IPS
46.0
2.06
36.38
42.75
32
1.625
190.0

42"
BU42IPS
53.0
2.00
42.38
49.50
36
1.625
172.0

48"
BU48IPS.
59.5
2.00
48.50
56.00
44
1.625
250.0

54"
BU54IPS
66.25
3.75
54.25
62.75
44
1.875
401.0

63"
BU63IPS
80.00
4.50
64.0
76.00
52
1.375
760.0

All dimensions are in inches. Others sizes are available upon request.

Convoluted back-up rings, 150lb. conform to the vital dimensions of ANSI B16.5such as outside diameter, bolt circle, bolt hole number and size.

*The term "convoluted" refers to the cross-sectional shape of the ring. The shape allows the usage of less material, which affects its original cost as well as shipping and handling cost. Earlier style back-up rings are available upon request.

Will mate with:

  • Forged steel flanges, Class 150 per ANSI B16.5
  • Plate steel flanges, Class 150 lb. Per AWWA C207
  • Cast iron flanges, 125 lb. Per ANSI B16.1
    •

     
         

     
     
       
      Home • Applications • Products & Services • Reference Center • Service & Support
      © Copyright 2000, ISCO Industries, LLC