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Heat Traced and Insulated Tanks
National Tank Outlet is known nationwide for our heat traced and insulated tanks. We can heat trace and insulate any of our tanks. The most common are our vertical tanks ranging from 200 to 16,500 gallons. We also heat trace and insulate our horizontal tanks, double wall tanks, cone bottom tanks, and more. Our systems allow you maintain a set temperature for your stored liquid. The system consists heat tracing applied to the lower part of the tank, electronic control box, and 2Ē of painted polyurethane foam. We can add fittings, external down fills, flanges, sight gages, level sensors, ladders, tie-down systems, and more. Our heat traced tanks can be used for indoors or outdoors. Some of the most popular chemicals stored in our heat traced and insulated tanks are sodium hydroxide or caustic, potassium hydroxide, and water. Please contact our sales staff with any questions or requests for pricing for our heat traced and insulated tanks.
Heat Maintenance Systems are be designed to meet specific
requirements such as tank material type, tank size, low ambient temperature, and
desired maintenance temperature.
All control components of the heating system are mounted in water tight, high impact
plastic box(es) with a gasketed cover.
All heating system components shall be factory pre-wired for 110
VAC. All connections shall be labeled to prevent errors in field installation.
Each control box shall carry a decal attached to the inside surface of the cover, on which
an electrical wiring diagram will be printed.
Each control box shall contain two temperature controls. One control shall regulate the
maintenance temperature setting and the other control shall regulate the high
temperature setting. The maintenance temperature setting should be set at the desired
maintenance temperature. The high temperature setting shall be adjusted to 10 degrees
above the desired maintenance temperature to a maximum of 130 degrees Fahrenheit.
All control systems must be designed with a power off failure mode.
The heating panels shall be designed to wrap around and lie flat against the surface of
the tanks. The heating panels shall have a maximum heating density of 0.022 watts per
square centimeter. All heating panels and sensor bulbs shall be attached to the tank with
2" wide duct tape. Under no circumstances shall cable type heaters be used with
Insulation used is a polyurethane foam with a density of 2.0 - 3.0 lb./ft3 with a "R" value
of 8.33/in. The foam shall be applied with a nominal thickness of 2" to all external tank
surfaces except the tank bottom shell.
Upon completion of application and curing of the insulation, two full coverage coats of
latex mastic coating are applied to the surface of the insulation in such manner as to
seal the insulation from the outside environment. The latex mastic can be ordered in white ( standard ) or grey in color.
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