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Upstream NC 15-50 UV Purification For Water

Upstream® NC 15-50

  • Upstream® models are available for flow rates of 10, 15 and 30 GPM and can treat water with UVT as low as 50%.

  • Laboratory tested to 40 mJ/cm2 dose at END of lamp life — same as NSF/ANS55 Class A certification. Competing brands test at beginning at lamp life and at a potentially unsafe dose of only 30 mJ/cm2.

  • Tested at 50% and 75% UVT (UV transmittance) of water. Competing brands test at virtually pure 95% UVT.

  • Operates at a wide range of water and air temperatures and pre-treatment ranges, unlike competing brands with limited operating conditions


Upstream Systems with patented Crossfire Technology are validated to achieve the same standards as NSF/ANSI 55 Class A, but are not certified, where regulations do not require it. Field-tested and proven with over a decade of demanding municipal, industrial and commercial applications.

Dissolved organics and high tannin content are the primary contributors to the reduction of UV Transmittance (UVT) in surface waters. Tannin content and low UVT render conventional UV technology ineffective. Our Upstream units are engineered specifically for these types of cases where others fail.

Upstream is engineered to reduce e-coli, bacteria, cysts like cryptosporidium and giardia, legionella and most viruses to safe levels –a minimum of 99.99% reduction. Upstream systems are effective for the broadest range of pre-treatment water quality with UVT as low as 50%.

Upstream Systems are for Potable, Reuse and Rainwater applications and are effective even on surface water from lakes, streams, cisterns and dug wells.

Broadest Range of Pre-treatment Conditions
Conventional "Light in a Pipe" Systems Current Hallett and Upstream Systems
Hardness <85mg/L (grains) Up to 855mg/L (grains)
Iron <.3 mg/L Up to 3 mg/L
No/Low Flow Overheating – lower UV intensity No Effect – 100% UV intensity
UVT Must be 75% to over 90% to achieve advertised dose As low as 50% for surface water and reuse applications
Flow Control Flow Restrictor is an option – may not be safe All UV Pure potable water systems have flow restrictors – Safe!


  • Flexible stainless steel hook-up hoses

  • Power Conditioner


  • Wireless Remote Monitor

  • Automatic Shut-off Solenoid Value


Model Upstream NC 15-50
PART NUMBER (115 Volt) R000004
PART NUMBER (240 Volt) R000036
Validation / Certification Engineered to meet the same standards as NSF/ANSI 55 Class A certified UV systems. Validated to achieve 40 mJ/cm2 at maximum specified flow rates and minimum specified UVT. Certified to AB 1953.
UV Dose minimum dose of 40 mJ/cm2 - 4 Log (99.99%) or greater reduction of bacteria, cysts and most viruses. Please refer to dose charts.
Minimum UV Transmittance 50%
Max Flow Rate 14.6 US gpm (55.3 L/min) (3.3 m3/hr)
Water Pressure 0 psi (69 kPa) to 100 psi (690 kPa); units are tested to 240 psi (1.6 MPa)
Dynamic Flow Restrictor Installed as standard
Pressure Drop at 75% of nominal flow capacity 10 psi (69 kPa)
Multiplexed Flow Capacity Engineered for multiple systems in parallel, for flow rates up to 1 MGD (696 US gpm) (2629 L/min) (158 m3/hr)
Redundancy Additional backup systems can be added cost effectively
Solenoid Shut-Off Valve Automatic shut-off valve available as option on all models
Inlet and Outlet Connections 1" NPT
Voltage Models available in either 115V or 240V configurations (please see different part numbers above)
Protection from Power Fluctuations 115V Models include power conditioner that meets UL 1449. External power conditioner recommended on 240V models
Maximum Power Consumption 200W
Electrical Certification Intertek ETL (UL, ULC and CE equivalent)
Lamps Low pressure, high output proprietary lamps contain up to 30 mg of mercury (Hg); rated for 9000 hours (1 year) of continuous use
Maintenance Onboard 9000 hour lamp life with lamp hour countdown to end of life. Automatic self-cleaning device prevents quartz sleeve from fouling and requires no maintenance
Electronic Ballast Auto power-regulated smart ballast is integrated with micro-processor control system; protected from power fluctuations
Self-Cleaning Stainless Steel patented automatic wiper-blade system keeps quartz free from scaling or bio-film
On-Board Micro-Processor and Monitor Patented dual smart UV sensors continuously monitor UV dose, lamp intensity (UVI) and water transmittance (UVT); three thermistors continuously monitor air temperature and water temperature; on board LCD displays system performance, lamp hours, data logged operating events, and self-diagnosis including when to change lamps and troubleshooting assistance for service issues; on board LEDs indicate system status: OK, caution or alarm conditions.
4-20 mA Analog Output Not available on Upstream models. Refer to Hallett specification page.
Dry Contacts Included as standard for applications that require remote alarming, auto-dialer integration, or similar.
Wireless Remote Monitor Available as option: RF 2.4 GHz remote monitor with LCD displays system status; operates up to 150 feet (50 meters) away from the main system
Remote Alarm Start / Stop Included as standard on all models. Allows units to be remotely started / stopped.
Dimensions (H, W, D) 39.8 x 7.5 x 9.3" (1010 x 190 x 236mm)
Weight - Dry 30 lbs / 13.6 kg
Weight - Wet 33 lbs / 14.9 kg
Warranty 1 year limited warranty on bulbs and sensor probes; 3 year limited warranty on electrical components and quartz sleeve; 5 year limited warranty for structural, hardware and mechanical components
EPA FIFRA Certified EPA Est. No. 075213-CAN-001
Patents Patented in US 6,707,048, Canada 2,463,503, Australia 2002333084, Mexico 248805, Patents pending in Europe, Eurasia, Japan, UK
Recommended Application or Source Water Unprotected water Sources: surface water, cisterns, rainwater, dug wells

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