PTFE-lined magnetic pumps, widely used in the chemical industry, have their temperature resistance directly affecting stable operation under different conditions. This article delves into the commonly used materials (PP, FEP, PTFE, PFA) for PTFE-lined magnetic pumps and their temperature resistance characteristics. The aim is to help users gain a comprehensive understanding and make informed choices regarding suitable pump materials.

1. PP (Polypropylene) Material

PP, as a common plastic material, has a relatively low temperature resistance. PTFE-lined magnetic pumps with PP lining typically exhibit temperature resistance in the range of 0°C to 80°C. This makes PP-lined magnetic pumps perform well in applications with mid to low-temperature requirements.

2. FEP (Fluorinated Ethylene Propylene) Material

FEP material offers higher temperature resistance compared to PP and is used in applications requiring elevated temperatures. PTFE-lined magnetic pumps with FEP lining generally have a temperature resistance range of -50°C to 150°C, making them more suitable for mid to high-temperature processes.

3. PTFE (Polytetrafluoroethylene) Material

PTFE is known for its excellent high-temperature resistance and is widely used in handling high-temperature and corrosive media. PTFE-lined magnetic pumps, with a temperature resistance range typically between -50°C to 200°C, are suitable for various harsh environments.

4. PFA (Perfluoroalkoxy) Material

PFA material shares similar thermal and chemical properties with PTFE but boasts superior mechanical performance. PTFE-lined magnetic pumps with PFA lining also have a temperature resistance range of -50°C to 200°C, along with better pressure resistance and mechanical strength. They are suitable for high-temperature and high-pressure conditions.

Different materials used in PTFE-lined magnetic pumps exhibit variations in temperature resistance. Therefore, when choosing, users should consider specific process requirements to make rational selections. PP is suitable for mid to low-temperature scenarios, FEP for mid to high-temperature applications, while PTFE and PFA are more appropriate for high-temperature and highly corrosive environments. Users should select the most suitable PTFE-lined magnetic pump material based on the nature of the medium and process requirements to ensure outstanding and stable performance over extended periods.