The Shift to Thermoplastics in Pump Manufacturing: A Sustainable and Economical Choice

In the realm of industrial pump manufacturing, the evolution from traditional metal to advanced thermoplastic materials marks a significant shift towards sustainability, economic efficiency, and enhanced performance. This transition, driven by the need to address the limitations of metal pumps in corrosive environments, has led to a broader adoption of thermoplastics, known for their robust corrosion resistance and long-term cost benefits.

From Metal to Thermoplastic: A Paradigm Shift

Historically, metal, particularly stainless steel, was the material of choice for pump construction due to its perceived durability and resistance to corrosion. However, operational challenges emerged when confronting aggressive chemicals, revealing that even high-grade alloys could falter under extreme conditions. This realization sparked a pivotal move towards thermoplastics, materials capable of withstanding harsh substances that metals cannot, thereby ensuring longer pump life and reduced maintenance requirements.

The Advantages of Thermoplastic Pumps

Thermoplastic pumps have increasingly become the go-to solution for over 60% of industrial applications, attributed to their superior qualities, including:

Exceptional Corrosion Resistance: Unlike metals, thermoplastics are inherently resistant to a wide range of corrosive chemicals, including bromine, halogens, and calcium chlorine, ensuring reliability and longevity in diverse industrial settings.

– Abrasion Resistance and High Purity: These pumps excel in environments where abrasion is a concern and where maintaining the purity of transported substances is crucial. Their non-reactive nature makes them ideal for high-purity applications, avoiding contamination risks associated with metal pumps.
Economic Efficiency: While the initial purchase cost of thermoplastic and metal pumps might be comparable, thermoplastics offer significant savings over time. Reduced maintenance needs, longer service life, and increased operational efficiency contribute to a lower total cost of ownership.

RE Merill | The Shift to Thermoplastics in Pump Manufacturing: A Sustainable and Economical Choice

Real-World Applications and Industry Preference

The preference for thermoplastic pumps extends beyond theoretical advantages, grounded in real-world performance and application success. Industries handling corrosive chemicals now lean towards thermoplastic options, such as the CHEM-GARD Horizontal Centrifugal Pump, FLEX-I-LINER Sealless Self-Priming Peristaltic Pumps, and SUMP-GARD Thermoplastic Vertical Pump, for their proven durability and efficiency.

Conclusion: A Future-Forward Choice

The debate between plastics and metal in pump manufacturing leans decidedly in favor of thermoplastics, given their adaptability, cost-effectiveness, and superior handling of corrosive environments. As industries continue to prioritize sustainability and operational efficiency, the role of thermoplastic pumps is set to grow, offering a reliable, economically viable solution that aligns with the future of industrial manufacturing. For those navigating the complexities of pump selection for corrosive or high-purity applications, the choice is clear. Thermoplastic pumps not only meet the rigorous demands of modern industrial processes but also offer a forward-thinking approach to environmental stewardship and economic management.

Ready to navigate the complexities of selecting the right pump for your corrosive, abrasive, or hazardous fluid applications? Contact Ron Merrill at RE Merrill and Associates, Inc. for a consultative approach that leverages over 35 years of industry expertise. Whether you’re interested in the durability of Vanton pumps or the precision of Grundfos metering pumps, Ron’s deep knowledge and problem-solving skills will ensure you find the perfect solution tailored to your specific needs. Don’t let pump selection challenges slow you down. Reach out to Ron Merrill today and benefit from his experience, reliability, and a proven track record of success.


The article discusses the shift from metal to plastic in pump manufacturing due to corrosion resistance, economic, and quality advantages. Initially, metal was the primary material for pumps, with stainless steel being favored for its corrosion resistance. However, challenges arose with certain chemicals that even advanced alloys couldn’t withstand, leading to increased interest in thermoplastics. Thermoplastic pumps, utilized in over 60% of industrial companies, offer superior abrasion resistance, corrosion resistance, and are advantageous in high-purity applications. Despite similar initial costs to metal pumps, thermoplastics present long-term savings through reduced maintenance and operational efficiency. The article emphasizes the growing preference for thermoplastic pumps in handling corrosive chemicals and maintaining product purity, supported by real-world application data rather than just laboratory tests.

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