The
design concept
The Viking Johnson coupling is designed to simplify
the design and installation of pipework systems.
Viking
Johnson couplings comprise:
-
a centre sleeve
-
two end rings
-
wedge shaped, synthetic rubber gaskets
- bolts, washers and nuts
As
the bolts are tightened, the end rings are drawn together,
compressing the gasket onto the pipe surface, forming
an effective permanent leak-tight joint.
Plain
ended pipe
Removes the need for costly and time-consuming pipe
end preparation, such as welding, threading and flanging.
Expansion
and contraction
Each coupling absorbs the expansion and contraction
occurring in pipe systems, reducing the need for supplementary
expansion joints or bellows.
Angular
deflection
Coupling design allows angular deflection which caters
for minor misalignment and ground settlement.
Long radius curves can be accommodated without using
specialised fittings.
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Flanged
fittings
Flange adaptors allow flanged fittings and valves/meters/pumps
to be installed in plain ended pipe systems.
Misalignment
- Allows for ground settlement.
- Eases
pipe laying on rough or uneven terrain.
- Precise
location of pipe opening through walls and floors
is unnecessary.
Absorbs
noise and vibration
- Gap at pipe ends isolates noise and vibration
- Resilient gasket helps to absorb noise and vibration
Each
joint is a union
- Loosening 2 couplings permits removal/rotation of
pipe section for cleaning/wear reduction
- Allows future pipeline extensions and modifications
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