ZL-20T 20 Ton Industrial FRP Counter Flow Cooling Tower - CIP Pharmaceutical
The ZL-20T with SS316L stainless steel upgrade supports CIP sanitization cycles in pharmaceutical manufacturing:
Hot water sanitization (80°C for 30 minutes): SS316L withstands 80°C continuously. The ZL-20T basin and piping can be isolated, filled with hot water, and circulated to achieve sanitization. Compatible with all ZL-20T configurations including the standard FRP shell when the SS316L upgrade is selected.
Chemical sanitization (sodium hypochlorite 200 ppm, 30 minutes): SS316L tolerates 1,000 ppm chlorine for short-duration sanitization cycles. Standard FRP tolerates 200 ppm for the same duration.
Steam sanitization (121°C, 30 minutes): Requires SS316L upgrade only. Standard FRP softens above 100°C. SS316L retains mechanical integrity through repeated 121°C steam cycles.
For CIP procedures, the ZL-20T water distribution piping can be supplied with sanitary tri-clamp connections instead of standard flanges, enabling rapid connection to CIP supply and return headers.
For pharmaceutical cGMP facility installation, the ZL-20T documentation package includes:
Material certificates: SS316L material test certificates (chemistry, mechanical properties), surface finish certification (Ra <0.8 µm for sanitary surfaces).
FDA compliance: All wetted surfaces comply with FDA 21 CFR for indirect food contact (relevant for pharmaceutical process water).
Validation support: Installation qualification (IQ) and operational qualification (OQ) protocols for cGMP facility commissioning. Performance qualification (PQ) supported through factory test data.
Surface finish: Electropolished SS316L surfaces meet pharmaceutical industry standards for cleanability and bioburden control.
For cGMP audits, the ZL-20T documentation supports facility validation master plan integration.
The ZL-20T SS316L upgrade maintains sterile process water temperature within pharmaceutical specifications:
USP purified water: ZL-20T supplies cooling water at 25-30°C for purified water system loops. Temperature stability ±2°C maintained during steady-state operation.
Water for injection (WFI): ZL-20T condenser water supports WFI distillation column condensers. Typical operating temperature 35-40°C.
Clean steam: Clean steam generators use ZL-20T cooling water for condensation. SS316L surfaces compatible with clean steam condensate collection.
Bioburden control: Maintaining cooling water temperature below 25°C inhibits Legionella and other biofilm formation. ZL-20T design point 32°C requires additional Legionella control measures (UV, chemical oxidation) for pharmaceutical applications.
For pharma WFI and purified water systems, the ZL-20T integrates with facility water system controls and monitoring.
SS316L surface finish options for pharmaceutical ZL-20T upgrade:
Standard SS316L: Mill finish, Ra 1.0-2.0 µm. Acceptable for non-product-contact surfaces.
Electropolished SS316L: Electrochemical surface treatment, Ra <0.4 µm. Required for direct product contact surfaces and cleanability-sensitive applications.
Mechanical polished SS316L: Hand or machine polishing to Ra 0.4-0.8 µm. Alternative to electropolishing for budget-conscious installations.
Passivation: All SS316L surfaces receive citric acid or nitric acid passivation per ASTM A967 to maximize corrosion resistance.
For pharmaceutical facility compliance, electropolished SS316L with documented surface finish certification is standard specification.
Pharmaceutical cooling water systems require bioburden control to prevent product contamination:
Biofilm prevention: ZL-20T SS316L surfaces resist biofilm formation when maintained below 25°C. Above 25°C, supplemental chemical treatment or UV sterilization required.
Legionella control: Pharmaceutical facilities maintain cooling water temperature above 20°C (storage) and below 50°C (operational) to control Legionella proliferation per WHO guidelines.
Sterile barrier: ZL-20T cooling water separated from product water by heat exchangers. Indirect contact ensures no pharmaceutical product contamination from cooling system.
Monitoring: Routine microbial testing of cooling water (total plate count, Legionella) per facility SOP. ZL-20T documentation supports monitoring protocol integration.
For pharmaceutical cGMP compliance, the ZL-20T cooling water system integrates with facility-wide bioburden control program.
ZL-20T SS316L upgrade supports ASME BPE (Bioprocessing Equipment) standards:
Sanitary fittings: Tri-clamp ferrules and gaskets per ASME BPE. Sanitary diaphragm valves for isolation. Material traceability per ASME BPE.
Surface finish: Electropolished to ASME BPE SF4 (Ra <0.4 µm) or SF5 (Ra <0.25 µm) for high-purity applications.
Documentation: Material test certificates per EN 10204 3.1. Weld procedure specifications per ASME Section IX. Weld qualification records.
Validation: Factory acceptance testing (FAT) including hydrostatic test, surface finish verification, and dimensional inspection per ASME BPE.
For pharmaceutical facility installations, the ZL-20T ASME BPE compliance documentation supports regulatory submissions and validation activities.
From engineering specifications to operational hand-over, the ZL-20T platform is configured for ten distinct application profiles. Explore the other nine below:
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