NORRES presents its new CONNECT clamp systems, which for the first time
allow its lightweight, flexible and abrasion-proof polyurethane hoses
to be clamped to all standard connection types. This innovative
technique for connecting commercially available fittings to
polyurethane hoses leads to a clear reduction in maintenance, energy
and process costs.
The connector portfolio was only recently extended with the CONNECT
Safety Clamp System 231. Now,
thanks to the compatible clamp systems, polyurethane hoses can be
used in almost any application from bulk material technology through
chemicals and pharmaceuticals to plastics processing. Users profit
from enhanced durability, significantly shorter fitting times and
increased reliability.
Traditionally, hose clamps have been used to connect externally corrugated spiral
hoses to adapters for a wide variety of applications. Under high
pressure, however, this inevitably entails a risk that the adapter
could become displaced or the system gradually lose its tightness.
These problems were been solved by NORRES innovative clamp systems.
CONNECT Safety Clamp System 231 has
many advantages. The NORRES Schlauchtechnik R&D department has
now come up with a special, threaded sealing insert that is adapted
to the outer hose contour and assembled between the hose and the
shell or pressing sleeve. The connection formed when the shells are
clamped or the sleeves pressed together is remarkably tight. In the
case of the pressfitting system, users additionally profit from
connections without any clearance spaces. Both these innovative
systems are designed with a form-locking groove and a form-locking
bar. The resulting high tensile strength ensures that the adapter is
securely held in the spiral hose even under considerable pressure.
Furthermore, the hose’s
metallic insert is exposed and contacted with the adapter when the
systems are assembled. Clamping the shells or pressing the sleeves
together creates a secure connection capable of electrostatic
discharge.
The NORRES CONNECT safety clamp system 231 has a special, threaded
sealing insert that is adapted to the outer hose contour. The system
is consequently explosion proof and the clamp shells are suitable for
reuse. In addition to this, the shells are made of aluminium, which
means they are quick and easy to fit. The system is
vibration-resistant, odourless and tasteless, resistant to microbes
and hydrolysis, and softener and halogen-free. It can be used in
conjunction with the AIRDUC® 355 and 356 profile hoses
for pellet suction and transport on pellet conveying systems in the
plastics industry as well as for loading and unloading silos and
assorted other applications with a high throughput of media like
powder or pellets. The polyurethane employed for the sealing insert
is food-quality and complies with the regulations of the American
Food and Drug Administration (FDA 21 CFR 177.2600 and 178.20) plus
the equivalent European Directives (2002/72/EC and 2007/19/EC).
Back in 2007, NORRES developed and introduced the highly successful
CONNECT Safety Clamp System 230, the first of its kind for
thick-walled polyurethane spiral hoses used to load and unload silo
vehicles. Until then, a wide range of free-flowing solids, such as
fodder, flour, grain and cement, were traditionally loaded in and
unloaded from silo vehicles by heavy, inflexible rubber hoses with a
tendency to age fast. Since there was no other way to load and unload
this bulk material, it was not possible to observe the process and
the hoses were difficult to assemble. They were also liable to leak
within a short time and suffered from excessive abrasion. This novel
solution will in future allow bulk material to be transported using
an undeniably superior hose type. Polyurethane is far more resistant
to abrasion than rubber, which means the hoses are also significantly
more durable. The new CONNECT safety clamp 230 system for loading
and unloading silo vehicles was initially developed for the NORRES
AIRDUC® PUR 356 MHF polyurethane hose and reinforced
with a diameter of 100 mm.
The systems in the
CONNECT series are extremely tight even under considerable pressure,
because they are compatible with the corresponding hose types. This
prevents pressure losses and cuts the costs for energy. They are
quick and easy to assemble using standard connection fittings – and
in the case of the CONNECT Safety Clamp Systems 230 and 231 the clamp
shells are suitable for reuse. The hose system can be earthed in
accordance with BGR 132 without any problems, so that all systems are
capable of electrostatic discharge.
The new CONNECT family
broadens the NORRES connector range, which meanwhile extends from
commercially available clamps and standard fittings to high-quality
aseptic couplers for the most challenging applications in the
pharmaceutical industry.
Photos:
CONNECT safety clamp system 231 (462 KB RGB)
CONNECT safety clamp system 231 (1,8 MB CMYK)
CONNECT Schaleneinbandsystem 230 (547 KB)