What Makes Non Metallic Pumps Different?
Non metallic pumps are engineered to handle corrosive chemicals, halogen-rich solutions, and abrasive effluents where even stainless steel and duplex alloys fail prematurely.
Unlike metallic builds, non-metallic chemical pumps rely on advanced polymers and fluoropolymers that resist acid attack, scaling, and pitting corrosion. In industries such as fluorochemicals, textiles, dyes, fertilizers, pharmaceuticals, and effluent treatment, a non metallic pump is not a utility; it is a compliance-critical asset that determines uptime and lifecycle costs.
Chemitek manufactures non-metallic centrifugal pumps and non-metallic process pumps under ANSI/ASME B73.1 standards and ISO 9001 14001 and 45001 QA systems. With flow capacities up to 1,200 m³/hr and temperature tolerance up to 210 °C, these pumps deliver predictable performance in the harshest environments.
Non Metallic Centrifugal Pump Design
The foundation of Chemitek's non metallic pump range is the centrifugal process design, optimized for efficiency and resilience under corrosive duty. Unlike metallic builds that rely solely on alloy strength, these designs use engineered polymers with thicker wall sections, molded volutes, and chemically compatible seals to handle aggressive fluids.
Design Variants in Chemitek's Range
Standard Non Metallic Centrifugal Pumps
End-suction models for medium-duty transfer of acids, alkalis, and wastewater. Their lightweight polymer construction reduces energy load on the motor while maintaining hydraulic stability.
Engineered Non-Metallic Centrifugal Pumps
PVDF, PFA, or PP-H are built with reinforced casing thickness to withstand higher pressures and temperatures. These models are selected for corrosive duty cycles such as hydrofluoric, hydrochloric, or mixed-acid streams where metals degrade rapidly.
Application-Driven Non Metallic Chemical Pumps
Customized designs using open impellers for fibrous slurries or abrasive effluents, and closed impellers for clean corrosive fluids. These pumps incorporate elastomers and seals specifically validated against halogenated and oxidizing chemicals, minimizing premature leakage and wear.
Chemitek manufactures these centrifugal non metallic pumps in PVDF, PFA, and PP-H polymers, integrating precision-molded impellers with ISO-certified sealing systems. Each pump is configured to resist stress cracking, acid permeation, and seal degradation, ensuring safe, long-term operation under oxidizing and halogen-rich conditions.
Materials in Non Metallic Pumps
Material choice defines durability in non-metallic pumps. Chemitek engineers its non metallic chemical pumps using:
PVDF (Polyvinylidene Fluoride)
High purity, excellent for acids and halogens up to 150 °C.
PFA & FEP
Fluoropolymers for aggressive duty at elevated temperatures, suited for mixed acid environments.
PPH (Polypropylene-Homopolymer)
Lightweight, economical for alkalis, effluents, and low-temperature acids.
Reinforced Polymer Linings
Combined with PolyGrif™ casings for structural integrity at flows exceeding 1,000 m³/hr.
These material options allow Chemitek's non-metallic process pumps to replace traditional metallic builds in fertilizer, dye, and effluent treatment plants, where metals corrode rapidly.
Non Metallic Chemical Pumps in Industrial Applications
Fluorochemicals and Fertilizers
Handling acids like hydrochloric, hydrofluoric, and nitric requires polymers that won't degrade under oxidizing conditions. Chemitek's non metallic centrifugal pumps in PVDF and PFA are selected for fertilizer complexes where continuous acid dosing would quickly destroy even duplex steels. The polymer-based builds ensure consistent flow and longer service intervals in acid-heavy production cycles.
Textile and Dye Industry
Dyeing and bleaching involve hot, alkaline, and chlorine-rich baths. The differentiator is color-laden, abrasive liquids that stain and clog metallic pumps. Chemitek's PP-H and PVDF non-metallic process pumps resist chemical swelling and surface fouling, keeping throughput steady in textile finishing and dye recovery lines.
Pharmaceuticals and Specialty Chemicals
For nitration reactions, solvent transfer, and reagent prep, the advantage of non metallic chemical pumps lies in their inert, leach-proof surfaces. Chemitek's fluoropolymer-lined pumps meet GMP and ISO expectations by preventing contamination, a feature especially critical in sterile and high-purity pharma operations where stainless steels may leach trace ions.
Effluent and Wastewater Treatment
In ETPs and STPs, the stress is not just on chemical resistance but also on swing duty where pumps face rapid pH shifts, intermittent chlorine dosing, and abrasive grit. Chemitek's non metallic centrifugal pumps in PVDF and PP are built to absorb these shocks without embrittlement or seal failure, making them dependable for neutralization, dosing, and sludge-side circulation.
Small and Large Non Metallic Centrifugal Pumps
Chemitek manufactures both small non metallic chemical pumps for pilot plants and dosing skids, and high-capacity non metallic centrifugal pumps for flows above 1,000 m³/hr.
Small non metallic centrifugal pumps: Compact builds for laboratory, R&D, and packaged process units.
Large non metallic pumps: Designed with PolyGrif™ reinforced casings for industrial-scale transfer in fertilizer, chemical, and steel ETP applications.
This scalability ensures process engineers can deploy non-metallic pumps at both experimental and full-scale operations without sacrificing reliability.
Unique Engineering in Non Metallic Pumps by Chemitek
Chemitek differentiates its non metallic centrifugal pumps through engineering choices designed specifically for polymers under aggressive chemical duty:
Key Engineering Features
- Anti-permeation barriers: Fluoropolymer linings in PVDF and PFA prevent chemical permeation and swelling, a common failure mode in generic non-metallic pumps.
- Swelling and creep resistance: Reinforced PP-H and PVDF casings are molded with extra wall thickness to resist deformation under thermal cycling and high static loads.
- Seal compatibility: Chemitek integrates polymer-compatible mechanical seals that withstand chlorine vapors, halogenated acids, and solvents without rapid wear or leakage.
- Precision-molded volutes: CAD/CAM polymer molding ensures smoother internal surfaces than sand-cast metals, reducing turbulence and scaling in corrosive fluid transfer.
- Vibration damping: Non metallic casings naturally absorb vibration, minimizing mechanical stress on bearings and seals during long-cycle chemical operations.
These polymer-focused innovations ensure Chemitek's non metallic pumps are not just chemical-resistant shells, they are engineered to perform reliably under the extreme realities of halogenated acids, mixed effluents, and high-temperature corrosive service.
Lifecycle Value of Non Metallic Pumps
The long-term performance of a non metallic pump depends on how well it resists damage modes unique to polymers under corrosive duty. Unlike metallic builds that fail due to corrosion fatigue, non metallic centrifugal pumps and non metallic process pumps face challenges such as:
Oxidizer-driven stress cracking in nitric or hydrofluoric acid service. Polymer softening and deformation under sustained thermal cycling. Seal deterioration from acid vapors or chlorine-rich effluents. Erosion and abrasion occur when abrasive solids are suspended in chemical streams.
Chemitek mitigates these risks by matching each non metallic chemical pump to its duty chemistry PVDF for halogen-rich acids, PFA for mixed-acid or high-temperature service, and PP-H for alkalis and effluents. This material precision reduces the need for expensive alloys while ensuring chemical compatibility.
To extend service intervals, Chemitek integrates hydraulically balanced impellers that minimize turbulence and axial thrust, lowering wear on seals and bearings. Spare part interchangeability, achieved through ANSI/ASME-compliant geometries, further supports plants operating across multiple geographies where local spare supply may be inconsistent.
By addressing acid-specific wear mechanisms and aligning pump design with duty chemistry, Chemitek's non-metallic centrifugal pumps operate as long-term process assets delivering reliable uptime, regulatory confidence, and optimized lifecycle economics across industries handling aggressive fluids.
ISO 9001:2015 certified
ISO 14001:2015 certified
ISO 45001:2018 certified
