The list of applications for polyurethane (PU) is long, and there are good reasons why the material is in demand. It can be used for cushioning in everything from car seats to packaging, but PU foam is also an energy-efficient and versatile insulation material for pipes, houses, machinery, and more. As such, it is well suited for contributing to the green transformation, reducing our need for heating and cooling – and therefore our need for power.
Manufacturing PU, however, is a challenge. Liquid isocyanate is a key component in PU, but it crystallises upon contact with even small amounts of moisture, causing pumps, seals, and valves to seize up and break down. And because isocyanate is toxic, leakages can have serious consequences for personnel, bystanders, and the environment.
Magnetic couplings keep production running
With a DESMI ROTAN® ED internal gear pump, you can avoid these issues and keep your PU production running safely, effectively, and economically. The most important reason is that the pump is magnetically coupled, and the pump chamber completely sealed. This makes the pump completely tight, preventing air moisture from reacting with the isocyanate, and preventing isocyanate leakage.
Any pump with a non-magnetic shaft coupling and mechanical seals is prone to deterioration because the isocyanate will react with even minuscule amounts of air moisture that enter via the shaft seals. Over time, this leads to pump degradation and failure, and you will need to spend time and money on maintenance, repair, or replacement – and on preventing or treating occupational injuries that result from leaked chemicals. Quite simply, the only solution that is reliable and safe in the long term is a magnetically coupled pump such as the DESMI ROTAN® ED.
Ideal for your PU production process
The magnetic coupling is the key reason why the ED is ideal for isocyanate applications, and the pump offers several other features that make it ideal for all stages of your PU production process:
While the ROTAN® ED pump range is ideal for isocyanate, DESMI manufactures other internal gear pumps that are suitable for other chemical applications. Our ROTAN® ED, HD, and CD pumps, for example, are well suited for high-viscosity chemicals such as polyols, and we offer pumps that handle amins, resins, bitumen, or other dangerous or difficult materials. Our extensive consultation and after-sales services ensure that you get a solution that works for you, for years.
The ROTAN® ED pump was developed by DESMI in cooperation with raw material manufacturers to ensure that it complies with requirements in industrial chemical production. The first ED unit was installed and commissioned in Denmark in 1994. Three decades on, it is still running, and you can use the experience and expertise that went into designing that pump in your application, too, keeping your PU production running safely, effectively, and economically.
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