Expansion Valve Rotor

The electronic expansion valve (EEV) serves as a critical throttling component within refrigeration systems, playing a pivotal role in energy consumption reduction. These valves are compact, possessing numerous poles and having stringent dimensional requirements. Operating continuously with refrigerants, they must withstand extreme temperatures without cracking.

To address these challenges, injection-molded rotors made from Ferrite/PPS and NdFeB/PPS compounds prove highly effective for EEVs:

Ferrite/PPS Series:

Purpose: Ideal for low-power motors.

Magnetic Properties: Achieves a maximum energy product ((BH)max) of 1.6 MGOe.

Advantages: Cost-effective, corrosion-resistant, and demagnetization-resistant at high temperatures.

NdFeB/PPS Series:

Purpose: Suited for higher-power electronic expansion rotors.

Magnetic Properties: Yields a maximum energy product ((BH)max) ranging from 2 to 8 MGOe.

Advantages: Offers exceptional magnetic strength, enabling smaller, lighter components.

As the demand for automotive thermal management systems grows, we remain committed to developing injection-molded magnetic materials that align with the design requirements of next-generation expansion valve rotors. Our ongoing efforts focus on achieving higher magnetic properties, cost efficiency, and improved resistance to high and low-temperature demagnetization. Together, we contribute to energy conservation and environmental protection.

Detailed parameters

Expansion Valve Rotor

OD(mm)	21.52
ID(mm)	13.09
Height(mm)	29.96
Surface gauss（mT）	/