Typically, manifolds for multipleEnergy Recovery
Devices are made in hard piping, using flexible
couplings between the devices discharge and
inlet ports.
This paper shows some design rules based on
Victaulic® Flexible couplings style 77 in Duplex.
Other supplier of flexible couplings may have
different design rules.
(
Victaulic® is a registered name of Victaulic)
It is always the customer’s responsibility to
design the manifolds according to the design
rules of the flexible couplings used.
Description
Experience in the market shows that precise
welding of a steel manifold with multiple con-
nections is difficult. The individual position of the
manifold connections may exceed the flexibility
of a single flexible coupling.
•
To reduce stress on the discharge and inlet
it is preferred to use flexible hoses or a
minimum of 2 flexible couplings combined
on the same pipe.
• When using hard piping, it is important to
allow a gap between each individual Victaulic
connection. See “Spacing” in table below.
•
T
he use of only one flexible coupling to
discharge or inlet should be accurately
controlled to ensure the proper alignment
of the manifold.
•
Do not force any misaligned pipes to con-
nect to discharge or inlet.
•
Do not use the discharge or inlet connec-
tion as support for pipes. The pipes must
have separate support close to the end of
the pipe.
Victaulic®
Flexible coupling
Style 77DX
Cut grooved
Pipe SC40
1½”
3.2
0 mm
3° - 52´ or 66
15120
2”
3.2
0 mm
3° or 52
23575
2½”
3.2
0 mm
2° - 30´ or 44
34250
3”
3.2
0 mm
2° or 36
51150
4”
6.4
0 mm
3° - 12´ or 56
84500
6”
6.4
0 mm
2° - 24´ or 36
184000
Spacing
[mm]
Max. angle
2)
[Deg.] or [mm]
Max. radial offset
1)
[mm]
End load
3)
[N]
Design guide
Piping connections
180R9426 | AQ367027814446en-000801 | IOM MPE 70
| 51
© Danfoss | DHS (im) | 2022.08
Summary of Contents for MPE 70
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