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Mechanical Joint
Product Specifications
Mechanical Joint
| Size Inches |
Pipe Thickness Inches |
Outside Diameter |
*Dimensions in Inches |
bolts |
Bell Weight Pounds |
Gland Bolts Gasket Weight Pounds |
| From |
To |
In. |
B |
J |
K1 |
K2 |
No. |
Size In. |
Length In. |
| 3 |
.25 |
.40 |
3.96 |
2.50 |
6.19 |
7.62 |
7.69 |
4 |
5/8 |
3 |
11 |
7 |
| 4 |
.26 |
.41 |
4.80 |
2.50 |
7.50 |
9.06 |
9.12 |
4 |
3/4 |
3 1/2 |
16 |
10 |
| 6 |
.25 |
.43 |
6.90 |
2.50 |
9.50 |
11.06 |
11.12 |
6 |
3/4 |
3 1/2 |
18 |
16 |
| 8 |
.27 |
.45 |
9.05 |
2.50 |
11.75 |
13.31 |
13.37 |
6 |
3/4 |
4 |
24 |
25 |
| 10 |
.29 |
.47 |
11.10 |
2.50 |
14.00 |
15.62 |
15.62 |
8 |
3/4 |
4 |
31 |
30 |
| 12 |
.31 |
.49 |
13.20 |
2.50 |
16.25 |
17.88 |
17.88 |
8 |
3/4 |
4 |
37 |
40 |
*Weight shown for regulat Grey Cast Iron Follower Gland. Corten Bolts and rubber gasket.
Standardized Mechanical Joint Pipe has a nominal laying length of 18 ft. Actual laying length averages 18 ft. 3 in. for 6 in. thru 24 in, and 20 h. for 3 in. and 4 in.
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SHORT FORM SPECIFICATION:
- Scope
1.1 This specification covers the general requirements for Pacific States Ductile Iron Pressure Pipe for conveying water and other liquids.
- Conformance
- Pipe:
Ductile Iron Pipe, 3" through 36", shall meet the requirements of ANSI/AWWA C151/A21.51 and ANSI/AWWA C150/A21.50.
- Joints:
Rubber-gasket joints shall be Tyton® Joint 3"-24" and Fastite® 30"-36" and meet the requirements of ANSI/AWWA 0111/121.11.
- Coating and Lining:
Outside coating shall be an asphaltic coating approximately one mil thick. Pipe shall be cement-mortar lined per ANSI/AWWA C104/A21.4.
Mechanical Joint Assembly
Step 1. A, B, & C. Clean the bell socket and
spigot or plain end. Lubricate both the gasket
and plain end by brushing with soapy water
or an approved pipe lubricant.
Step 2. A & B. Place the gland on the plain
end with the lip extension toward the plain
end. Place the gasket on the plain end with
the narrow edge facing the plain end.
Step 3. Insert the plain end into the bell and
press the gasket into the bell recess. Push the
gland toward the socket and center it around
the pipe with the gland lip against the gasket.
Step 4. A & B. Insert and tighten the bolts. It is important to maintain the same distance
between the gland and bell face at all times.
This is best done by tightening opposite sets of bolts.
Achieving the recommended bolt torque,
particularly with large diameter pipe, may
require repeating the process.
Recommended bolt torque ranges are as
follows:
| Torque |
| Pipe Size (in.) |
Bolt Size (in.) |
Range (ft/lb) |
| 3 |
5/8 |
45-60 |
| 4-12 |
3/4 |
75-90 |
Field Cutting Ductile Iron Pipe
When it is necessary to field cut ductile iron pipe, the installer should select a piece of pipe that has been marked for field cutting.
All ductile iron pipe has a slight taper due to the manufacturing process. If the pipe is not marked for field cutting then the
diameter of the pipe should be checked prior to cutting. This can be done with an OD
Tape or by using an MJ follower to check the diameter of the pipe. No pipe should be cut within 24 inches of the bell face.
| Normal Pipe Size In. |
Min. Pipe Diameter In. |
Max. Pipe Diameter In. |
Min. Pipe Circumference In. |
Max. Pipe Circumference In. |
| 3 |
3.9 |
4.02 |
12-1/4 |
12-5/8 |
| 4 |
4.74 |
4.86 |
14-29/32 |
15-9/32 |
| 6 |
6.84 |
6.96 |
21-1/2 |
21-7/8 |
| 8 |
8.99 |
9.11 |
28-1/4 |
28-5/8 |
| 10 |
11.04 |
11.16 |
34-11/16 |
35-1/16 |
| 12 |
13.14 |
13.26 |
41-9/32 |
41-21/32 |
| Above Table Based On ANSI/AWWA C151/A21.51 Guidelines For Push-On Joints. |
Maximum Deflection for Full Length Pipe
MECHANICAL JOINT PIPE
Maximum Allowable Joint Deflection
| Size of Pipe |
Y-Maximum Joint Deflection in Degrees |
X Deflection in Inches 18 ft. Length |
Approximate Radius in ft. of Curve Produced by Succession of Joints 18 ft. Length |
| 3 |
8°-18' |
35* |
140* |
| 4 |
8°-18' |
35* |
140* |
| 6 |
7°-7 |
27 |
145 |
| 8 |
5°-21' |
20 |
195 |
| 10 |
5°-21' |
20 |
195 |
| 12 |
5°-21' |
20 |
195 |
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