STANDARD Vi Joint
The anchored STANDARD Vi joint is a push-in anchored joint for laying anchoring pipes.
The anchoring is designed to take up axial forces and allows laying without the need for concrete blocks.
It is suitable for all STANDARD sockets and all smooth spigots.
Range : DN60 to 700
Principle
The basic principle of anchoring joints consists in transmitting the axial forces from one pipeline component to the next, thus ensuring that the joint does not come apart.
The STANDARD Vi joint gasket with its inserts anchors the socket joint by hooking onto the pipe spigot and so avoids having to install concrete blocks.
This anchoring system also avoids the need for a weld bead on the spigot, and so can be used with smooth spigots and in all STANDARD sockets.
Applications
The anchored STANDARD Vi joint is of particular interest in congested conditions that preclude the construction of concrete anchor blocks or in poorly cohesive soils, as well as laying pipes on a steep slope or in a casing.
The use of the anchored STANDARD Vi joint is not recommended when the joints are subjected to uncontrolled and repeated traction or joint deflection.
The anchored STANDARD Vi joint cannot be used on FGL iron pipes (grey iron).
Performances
The anchored STANDARD Vi joint combines the advantages of flexible joint pipelines with welded joint pipelines.
Pressure performance
|
DN |
Class |
PFA |
PMA |
PEA |
|---|---|---|---|---|
|
Allowable operating |
Allowable maximum |
Allowable test |
||
|
DN60 |
C40 |
22 |
26 |
31 |
|
DN80 to DN300 |
C40 |
16 |
19 |
24 |
|
DN350 to DN400 |
C30 |
16 |
19 |
24 |
|
DN450 |
C30 |
13 |
15 |
20 |
|
DN500 |
C30 |
11 |
13 |
18 |
|
DN600 |
C30 |
10 |
12 |
17 |
For higher pressures we shall use HPVi pipes
|
DN |
Class |
PFA (bar) |
PMA (bar) |
PEA (bar) |
|---|---|---|---|---|
|
DN60 |
C64 |
30 |
36 |
41 |
|
DN80, DN100 and DN150 |
C64 |
25 |
30 |
35 |
|
DN125 |
C64 |
20 |
24 |
29 |
|
DN200 to DN300 |
C50 |
20 |
24 |
29 |
|
DN350 to DN450 |
C40 |
20 |
24 |
29 |
|
DN500 |
C40 |
18 |
21 |
26 |
|
DN600 |
C40 |
16 |
19 |
19 |
Angular deflection
|
DN |
Allowable laid deflection |
Displacement |
|---|---|---|
|
DN60 to DN150 |
5° |
52 |
|
DN200 to DN250 |
4° |
42 |
|
DN300 to DN350 |
3° |
31 |
|
DN400 to DN600 |
2° |
21 |
Joint deflection
|
DN |
Gap |
|
|---|---|---|
|
Aligned |
Deflected |
|
|
60 |
36 |
30 |
|
80 |
37 |
29 |
|
100 |
33 |
22 |
|
125 |
35 |
22 |
|
150 |
38 |
23 |
|
200 |
42 |
22 |
|
250 |
41 |
17 |
|
300 |
38 |
9 |
|
350 |
43 |
17 |
|
400 |
42 |
12 |
|
450 |
43 |
9 |
|
500 |
43 |
6 |
|
600 |
46 |
2 |
Disassembly
The anchored STANDARD Vi joint cannot be disassembled after pressure build-up.