Many of the larger gold mines have
autoclaves that require special
coatings and design features such
as a relief cut in the ball. Copeland
has been manufacturing these
valves and their components and
coatings for over 15 years.
Copper Mining Slurry Valve featuring 4 bolt
packing assembly, wear resistant carbide
overlay on all sealing areas and removable
top plate. Valves are available in both side
entry, top entry, floating and trunnion
configurations.
Some autoclave valves just do not last as
long as they should. Copeland can often
rework  or retrofit these valves, saving the
expensive titanium or duplex base metal
but adding current features that allow the
valve to operate trouble-free between
turnarounds.
Copeland's downstream seat is
locked into place to prevent erosion
behind the seat but allows
replacement of the seat when it
comes time to repair the valve.
Mining Applications
Mining applications often introduce
their own set of conditions that are,
oftentimes, unique to their industry.
Copeland participated in the design
and manufacture of some of the
earliest mining ventures using these
types of valves over 15 years ago.

Special coatings, design features and
materials used in mining valves are
the norm rather than the exception.
Small differences in manufacturing
techniques and material selection can
increase the life of valves exposed to
silica and, often, corrosive agents and
high temperatures, to a significant
degree.

Copeland has been very successful in
recognizing and changing deficiencies
in design and, at the same time,
salvaging expensive valve bodies that
are either large in size or made of
alloys such as titanium or Zirconium.
Copeland Industries
Severe Service Ball Valves