|
Pivot
Master Floating Roof Drain Systems
The
patented HMT Pivot Master was designed to innovatively
provide a better solution to floating roof drainage
problems. It combines both the flexibility of
composite and hose systems with the strength found in
rigid pipe/swivel join systems. The pivot Master
is basically a steel pipe drain system with flexible
joints that withstand an extremely wide range of service
conditions.
Pivot Master Drain System offer Long
Maintenance-Free Service - The HMT Pivot
Master has been installed in thousands of storage tanks
worldwide since its introduction in 1982. The
system effectively provides positive roof drainage with
maintenance-free and worry-free operation. This
results in extended service life, with no hose kinking
or clogging, and there is no stress loading on O-rings,
bearings or seals. Instead of costly swivels, the
Pivot Master employs unique flexible joints in a
straight-line design, with no offsets to cause
unbalanced loading.
The Pivot Master is easily
installed in a fixed position, requiring a minimal
operating area. With a designed continuous slope,
the Pivot Master does not allow sediment to become
trapped in the system. It is designed for
submerged service with no lubrication required, and
there are no corrosion freeze-ups. Pivot Master
components are compatible with 100% aromatic products
and can withstand high design pressures.
The HMT Pivot
Master Drain System is available on an installed system
basis or on a material only basis, with or without
piping. In any event, complete engineering
drawings and instructions for installation are provided.
Advantages of the Pivot Master compared to Swivel Joint
Systems:
-
Straight-line design - no offsets to cause
unbalanced loading
-
No O-rings, bearings or seals
-
No moving parts to lubricate
-
Designed for submerged service
-
No flow restrictions
-
Load Stresses transferred across joint, not
through it
-
Easy installation
Advantages of Pivot Master Compared to Hose Drain
Systems:
-
Continuous slope design - no sediment traps
-
Small operating area - no tank layout
required, minimizing downtime
-
Fixed position - no damage due to
interference
-
100% aromatic resistant components
-
Higher design pressure
-
No kinking or collapsing
-
No dragging or scraping action across tank
bottom
-
No ballasting needed
Other Advantages of the Pivot Master Drain
System:
-
Ease of design and installation
-
No measuring of roof legs and other
internals required prior to design
-
Immediate delivery of system components,
reducing tank downtime
-
Minimal field welding required for
system installation
-
No piping runs required on underside of
floating roof
-
Pivot Master flexible joints can be used
for internal floating suctions
-
Pivot Master Roof Drain Systems can be
designed for dual use Fire Fighting Foam
Delivery Systems
Construction Features:
The HMT Pivot Master flexible joint is
designed with inner and outer stainless
steel wire helixes to maintain hose rigidity
when subjected to internal or external
pressures. Multiple inner layers of
polar and non-polar elastomeric materials in
the flexible joint prevent product
permeation through the hose, even from such
products as MTBE. The outer layers of
this woven fabric protect the inner hose
materials. Its high design pressure
also makes the Pivot Master suitable for use
with fire fighting foam delivery systems.
The flexible joint pivot-pin design uses
stainless steel bushings and spacers to
eliminate binding and assure flexibility.
No lubrication is required. The
reinforced side plates transfer the load
around the flexible hose, eliminating stress
on the hose end connections and minimizing
the possibility of hose end failure.
These side plates are available carbon
steel (galvanized or prime coated) and stainless steel
materials.
Pivot Master flexible joints are attached
to Schedule 40 carbon steel piping to
provide a rigid, maintenance-free drain
system. Piping diameters of 3" through
10" are readily available from stock.
|
