As an alternative to the conventional, gasketed
pipe connection a fundamentally different VCF-joint is presented.
It consists not only of a pair of flanges, but of an entire system
of components including flanges, bolts and nuts plus tools, specifications,
documentation and instructions for assembly.
The design is based on modern principles of bolted
joint engineering. When properly assembled it can not possibly "blow
a gasket" or "develop a leak.
|The VCF-System has
proven its perfomance in numereous
destructive and non-destructive tests and experiments This pressure
vessel with VCF-joint was charged with a rocket propellant and
Troublefree. No need for maintenance
Result of decades of research and development. The
basic concept was developed already in 1963. A few fundamental experiments
were performed and the novel design presented. (ASME 1967 WAmeeting
in Philadelphia). In 1976 work was resumed and in 1977 acceptance
by Det norske Veritas ( Dn V certificate nr.: M-2932) for installation
aboard ships, was secured.
The VCF-System of today is the result of 30 years of extensive
research and numero experiments.
|| A full
scale, functional test of a VCF-joint for 20 by 2 inch pipe
for max. working pressure of 255 bar was successfully completed
in 1980 under the supervision of DnV (ref: Welding Research
Council bulletin 262 October 1980)
During the years 1980 - 1985 further
research was performed, rendering a thorough insight and understanding
of the problems involved. The major experiment later was reproduced
and verified by six independent and respected research institutions
from various parts of the world.