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At the heart of a centrifugal pump is the impeller and diffuser. We injection mold, machine, and quality check these critical pump components for ideal performance.

 

As we have done for decades, we melt a variety of thermoplastic resin pellets, such as Noryl®, Delrin®, and Polycarbonate (Lexan), and inject them into our molds to make 4” and 6” impellers and diffusers.

 

Each of these thermoplastic materials have qualities suited for extruding impellers and diffusers:

 

Noryl®

The Noryl modified PPE resins are blends of PPO™ resin (polyphenylene ether) and polystyrene. They combine the benefits of PPO resin, affordable high heat resistance, good electrical properties, excellent hydrolytic, with excellent dimensional stability.

 

It’s excellent dimensional control and exceptionally low mold shrinkage provide great results.

 

Delrin®

Delrin acetal homopolymer (Polyoxymethylene POM) is the ideal material for parts designed to replace metal. It is a high-performance acetal resin that is great for mechanical applications.

 

It combines low-friction and high-wear resistance with the high strength and stiffness as demanded by pumps.

 

Polycarbonates

Polycarbonates (PC) are virtually unbreakable plastics. They are remarkably durable while being extremely lightweight. They have excellent temperature characteristics and shrink rates.

 

Polycarbonates are sustainable and can easily be recycled by heating the material to a liquid, then remolding it.

 

Once molded, all our extruded impellers and diffusers are machined and trimmed to specifications ensuring precise tolerances. Then, we properly arrange them into rotating assemblies for optimum performance.

 

The injection molding process allows us to maintain a high degree of accuracy in the manufacturing process, producing more efficient pumps.

 

How do different types of fluids react to these specific thermoplastics? Here is a comprehensive chart of common fluids that affect molded plastics.

 

 

 

 

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