Heat Transfer Fluid
MultiTherm Food Grade

MultiTherm PG-1 ® is a high quality Food Grade Heat Transfer Fluid for use in closed loop, liquid phase heating and cooling systems to 600°F.

MultiTherm PG-1 ® has been successfully used in over thirty-five different industries. In the chemical processing industry, it is used for temperature control of batch reactors, in heat recovery from process streams and exhaust gases and in large central systems where multiple heat users are involved.

In the food processing industry, MultiTherm PG-1 ® is used in indirect heating loops for deep frying and baking. In the plastics industry, it provides accurate temperature control for platens, molds, extruders and laminating rolls. For die casing, MultiTherm provides low maintenance control of die temperature.

The unique formula of MultiTherm PG-1 ® assures performance without the potential problems of many conventional fluids.

FDA Certified Nontoxic USDA Chemically Acceptable

MultiTherm PG-1 ® meets the specifications of 21CFR172.878 which covers the use of White Mineral Oils in Food according to the limits and conditions of the regulation. It is also chemically acceptable for use as a heat transfer fluid in plants operating under Federal Meat & Poultry Inspection.

EFFICIENT
Lower Operating Costs
The energy required to achieve a process heat load can be influenced by the physical properties of the fluid (density, heat capacity, thermal conductivity, specific heat).  MultiTherm properties result in more efficient use of energy than many other fluids. Low pressure drops reduce pump horsepower requirements. Heater outlet temperatures can be reduced since MultiTherm's high flu film coefficients allow lower approach temperatures.

Lower Equipment Costs
Fluid properties can also affect equipment costs. Many conventional fluids have high viscosity at ambient temperatures and can require oversized pumps and/or heat tracing equipment to facilitate cold startups. MultiTherm PG-1 ® is pumpable to -13°F with a centrifugal pump, so startup problems are minimal. Its high fluid film coefficient can reduce the heat exchanger area required for a given heat load. MultiTherm PG-1 ® also has low vapor pressure which can allow specification of less expensive, low pressure expansion tanks, piping and process equipment.

NON-FOULING
Long Term Temperature Control
All organic heat transfer fluids undergo thermal degradation over time. Conventional synthetic fluids or low quality oils will form soft carbon material (sludge) that eventually coats all system surfaces, and can form hard coating. Because the coating acts as an insulator, heat transfer rates are reduced resulting in longer heat up time, lower production rates, changes in control response and, in extreme cases, burnout of heater tubes or electrical elements.

With non-fouling MultiTherm PG-1 ®, these problems disappear. As it degrades, it produces small carbon particles that do not stick to system surfaces, but remain suspended and are easily drained or filtered out. Since heat transfer surfaces remain clean, system performance remains constant.

Lower Maintenance Costs
System downtime due to mechanical seal failure, sludge buildup or heat burnout can result in lost production time as well as extra direct maintenance cost. MultiTherm can help reduce these costs. It has lubricating properties that reduce wear on mechanical seals and packing glands. The fluid is chemically inert and will not aggressively attack seals or gaskets. System cleaning is reduced since any carbon formed can be filtered or drained from the system. By eliminating maintenance problems, MultiTherm helps reduce the costs.