DESMI ROTAN®ED Magnetic Pump: Ensure the safe and efficient delivery of isocyanate in polyurethane production

In polyurethane (PU) production, it is crucial to deliver the key raw material isocyanate safely, efficiently 

and economically. Desmi's ROTAN®ED internal gear pump is designed for this purpose, with its core 

advantage being the use of magnetic couplings.

The key role of magnetic coupling:

Complete seal: Magnetic drive completely seals the pump chamber and isolates air.

Prevent deterioration and leakage: Effectively prevents the moisture in the air from reacting with 

isocyanate (causing chemical deterioration) and prevents isocyanate leakage.

Solve traditional pump pain points: Compared with pumps that use non-magnetic couplings and 

mechanically sealed (prone to isocyanate deterioration, pump body aging, leakage risks and high

 maintenance costs due to moisture infiltration), magnetic pumps provide the only reliable and safe solution.

Why is it ideal for polyurethane production?

In addition to the core magnetic sealing technology, ROTAN®ED pumps also have the following 

advantages for all aspects of PU production:

Compact and flexible: Small size, suitable for space-constrained places (such as chemical boats,

 tankers). It can be transported in two directions (forward and reverse) and has no efficiency loss,

 making it ideal for transportation applications. Optional ATEX certified for flammable and explosive 

environments.

Reliable and low maintenance: No mechanical seal design, significantly reduces the need for repair,

 highly reliable operation, and extremely low maintenance requirements. This reduces the risk of 

failure, production interruption, and the need for expensive spare parts. At the same time, the pump

 consumes low energy.

Tailored: Desmi does not offer "off-the-shelf" solutions. Each pump is customized to meet the specific 

specifications and application requirements of the customer to ensure a perfect match.

Wide range of chemical application capabilities:

Although the ROTAN®ED series is ideal for isocyanate applications, Desmi’s internal gear pump series

(including ED, HD, CD) is also suitable for transporting other chemicals such as polyols (high viscosity), 

amines, resins, asphalt and other hazardous or difficult-to-treat materials. Desmi provides professional 

consulting and after-sales service support.

Experience-proven reliability:

ROTAN®ED pumps are developed in partnership with raw material manufacturers and are designed to 

meet the stringent requirements of industrial chemicals. Its reliability has been verified by decades of

 practice - the first ED pump was installed and operated in Denmark in 1994 and is still in service today.

 Choosing the Desmi ROTAN®ED pump is to ensure that your polyurethane production process is safe, 

efficient and economical with its deep experience and expertise.

Summary: The Dysmi ROTAN®ED magnetic internal mesh gear pump, with its fully sealed magnetic 

drive technology, fundamentally solves the problem of deterioration and leakage in isocyanate transport. 

Combined with compact design, two-way transport, high reliability, low maintenance, customized services 

and extensive chemical compatibility, it provides safe, efficient and economical fluid transport guarantees

 for polyurethane and various chemical productions.