Hallett 500PN UV Water Disinfection System for Potable Water | NSF 55 Class A Certified | Self-Cleaning, Dual UV Sensors, Crossfire Technology

Hallett™ 500PN Potable Water UV Disinfection System with Crossfire Technology – Self-Cleaning, Dual UV Sensors, and NSF Class A Certification

The Hallett™ 500PN Potable Water UV Disinfection System offers unmatched performance for reliable, chemical-free water disinfection. Engineered with UV Pure’s patented Crossfire Technology, this advanced system ensures 360-degree pathogen exposure through its elliptical reflectors, eliminating shadowing and delivering consistent UV dosing—even in challenging water conditions.

This powerful system is NSF/ANSI 55 Class A certified, making it ideal for potable water applications that require high performance and proven pathogen inactivation. Designed for ease of installation and maintenance, the 500PN features air-mounted UV lamps for safe, dry removal, automated quartz sleeve cleaning, and dual smart UV sensors that continuously monitor output and water quality. With built-in temperature control, onboard diagnostics, and a color touchscreen display, the Hallett 500PN minimizes nuisance alarms and maximizes operator confidence.

Whether you're upgrading a commercial water treatment system or seeking a highly dependable UV solution for industrial or remote potable water use, the Hallett 500PN delivers smart technology, rugged design, and consistent compliance with even the most demanding water quality standards.

Key Features: Advanced UV Disinfection Without the Maintenance Hassle

• Crossfire Technology
  Patented elliptical reflectors ensure full 360° light redirection for superior microbial inactivation and no shadowing.

• Self-Cleaning Quartz Sleeve
  Automatic wiper prevents fouling—no manual cleaning required.

• Dual Smart UV Sensors
  Air-mounted, NIST-calibrated sensors continuously monitor UV intensity and water quality without water contact.

• Air-Mounted UV Lamps
  Lamps are installed outside the water chamber for easy, contamination-free maintenance.

• Temperature Management System
  Built-in cooling and purge valve help prevent false alarms and system shut-downs due to overheating.

• Touchscreen Interface
  User-friendly color LCD with data logging and real-time diagnostics.

• Dry Contacts + Optional Modbus & 4-20mA Output
  Enables remote system alerts and advanced monitoring integration.

• Plug-and-Play Design
  Simple installation—no need to allow clearance space for lamp removal.

Explore More Hallett and UV Water Treatment Solutions

• Need additional models or parts? Browse our full Hallett Collection to view all available Hallett UV systems and replacement parts.

• Looking for lamps, sensors, sleeves, or other components? Explore our complete UV Replacement Parts section to see all brands that we carry.

• For complete system builds, housings, filters, UV systems, and accessories, visit our Commercial Water Filters and UV Parts section.

Performance Specifications

• Max Flow Rate: 16.5 US GPM (62.5 LPM)

• UV Dose: Minimum 40 mJ/cm²

• Min UV Transmittance: 75% UVT

• Max Water Hardness: 855 mg/L (50 gpg)

• Max Iron Content: 3 mg/L (3 ppm)

• Operating Temp (Air & Water): 34–104°F (1–40°C)

• Water Pressure Range: 5–100 psig (34–690 kPa)

• Humidity Tolerance: Max 70%

• UV Lamps: Dual LPHO, 9,000-hour typical life, 12 lamp cycles/day max

• Power Consumption: 196 W

• Certifications: NSF/ANSI 55 Class A, UL 979, IEC 60335-1/-2-109, CE

Built-In System Components

• Automatic Quartz Sleeve Wiper

• Wiper Position Sensor

• Internal Flow Restrictor

• Built-in Forced Air Cooling System

• Dual UV Sensors (air-mounted)

• USB Port for Data Logging

• Remote Start/Stop Control

• Onboard Diagnostics & Visual/Audible Alarms

Physical Specifications

• Dimensions: 36.5" H × 9.6" W × 8.6" D (926 × 244 × 218 mm)

• Dry Weight: 32 lb (14.6 kg)

• Wet Weight: 36 lb (16.3 kg)

• Inlet/Outlet: 1" MNPT Stainless Steel (optional hose kit)

• Housing: Anodized Aluminum & 316 SS

• Ingress Protection: IP 51 (optional IP 66 with NEMA enclosure)

• Warranty:

  • 5-Year: Structural, hardware, mechanical components

  • 3-Year: Electrical, quartz sleeve

  • 1-Year: UV sensors

  • 12-Month: UV lamps

Benefits That Set the Hallett™ 500PN Apart

• No Water Contact Maintenance
  Air-mounted components allow for easy access and servicing—no tools or system shutdowns required.

• Reduced Alarm Frequency
  Temperature controls, air-mounted sensors, and the automatic sleeve wiper eliminate most nuisance alarms.

• Real-Time System Monitoring
  Color touchscreen logs 99 previous messages with timestamps. Remote alerts via dry contacts or optional Modbus output.

• Advanced Safety and Compliance
  NSF/ANSI 55 Class A certified and compliant with major electrical and water safety standards.

Built for Demanding Water Treatment Environments

Whether you’re operating a commercial building, remote facility, or industrial site, the Hallett™ 500PN UV Disinfection System provides a worry-free, maintenance-light solution for safe, potable water. Its innovative Crossfire Technology, dual sensor monitoring, and self-cleaning capabilities make it a leading choice for dependable, long-term water treatment.