Urbans Aqua is a stocking distributor of UV systems.
What is Ultraviolet Light?
- Ultraviolet light is an approved method of water treatment.
- Ultraviolet light attacks microorganisms, disease-causing bacteria, and viruses in the water.
- Ultraviolet is part of the electromagnetic spectrum.
- The disinfection wavelength is 254 nanometers and is known as the germicidal action curve.
- It is the wavelengths in the electromagnetic spectrum that are absorbed by microorganisms.
- It destroys the cell wall of the microorganism by hitting the DNA, breaking it down, effectively destroying it or killing the microorganism.
How It Works
- The design flow rate is based on the amount of ultraviolet energy that’s exposed in the chamber and the contact time in seconds or gpm.
- The ultraviolet lamp emits UV light 360° around the lamp, but its energy zone is at a certain distance from the lamp. A typical zone where ultraviolet goes is somewhere between two and half to three inches from the lamp.
- Because it is an electronic device, the lamp is encased in a quartz sleeve to protect it from the water.
- Once electrified it is sealed inside an ultraviolet chamber, typically manufactured out of stainless steel- 304 or 316 stainless steel.
- Water enters the chamber and spins around the ultraviolet lamp, where it is exposed to the ultraviolet energy which kills the bacteria before leaving the UV chamber outlet.
- Caution – Direct exposure to the light over time will hurt your eyes. People who have experienced this may feel a sandy or burning sensation in their eyes. It’s important, when working on a system, to turn the power off and wear UV rated safety glasses safety glasses when it’s in service.
Effectiveness
- Every microorganism requires a specific amount of ultraviolet light energy values for complete destruction.
- Microorganisms such as coli, cryptosporidium, giardia, and viruses can be reduced by one log, which is 90% reduction, or 2-log at 99%, or 3-log at 99.9%, or 4-log 99.99% reduction.
What to Look for When Specifying a UV System
- There are four aspects in ultraviolet design:
- The lamp – how many UV watts does the lamp have, how much exposure does it have, intensity, output?
- The ballast – how the ballast interacts with the UV lamp, there are several diverse types of ballasts. We recommend an electronic ballast.
- The chamber – how it’s manufactured, is it convenient for installation with the inlet and outlet designs?
- Does it come with a type of UV monitor? Typical monitors would be a lamp out alarm or a timer that gives you the lamp hours, and a UV sensor.
- Alarms
- There is an option for a normally closed solenoid installed on the UV outlet side. If a UV lamp goes out or power is lost, it would shut off that solenoid valve. This prevents any untreated water from going past the solenoid valve.
- Once power is restored or the lamp is replaced the UV light will come on after reaching its warmup period and proper UV The control panel will recognize that and open that solenoid valve.
- Pretreatment Requirements
- It’s very important to get good UV Transmission. Filtration may be required ahead of the UV system.
- Hardness < 7 GPG – The quartz sleeve can be coated with hardness and will plate out on the lamp.
- Manganese < 0.05 ppm – Manganese may cloat the lens transmitting the UV light.
- Iron < 0.3 ppm Iron may coat the lens transmitting the UV light.
- Turbidity < 5 ntu – No color in the water.
- pH between 6.5 & 9.5
- It’s very important to get good UV Transmission. Filtration may be required ahead of the UV system.
Optional UV Monitor
Leand more about Ultraviolet Disinfection
Urbans Aqua stocks systems & parts for GDS UV Series 8, 12 & 20 gpm systems.
Benefits
- No taste or odor.
- Chemical free elimination of microbiological contaminants.
- Bacteria, viruses and other organisms are destroyed safely inside a factory sealed and tested stainless steel chamber.
System Features
- Visual & Audible Alarms
- 30 Day Replacement Alarm & Countdown Timer
- Lamp Life Expired Alarm
- UV Lamp Out Alarm
- 365 Day Resettable Lamp Life Counter
- Flow Control
- Solenoid Valve Connection
- Site Port
- Manufactured in the USA
ATS GDS & PFC Series UV Lights
| Model | Number Lamps | Max Flow Rate | KW @120V | AMP @ 120V | Pipe Size | Dimensions OA | Materials of Contruction |
|---|---|---|---|---|---|---|---|
| GDS-8 PFC-8 | 1 | 8 | 0.03 | 0.25 | 3/4" MIP | 21" x 3.5" x 3.5" 9 pounds | 304 SS |
| GDS-12 PFC-12 | 1 | 12 | 0.03 | 0.25 | 3/4" MIP | 32" x 3.5" x 3.5" 18 pounds | 304 SS |
| GDS-20 PFC-20 | 1 | 20 | 0.03 | 0.25 | 1" MIP | 35" x 5" x 5" 32 pounds | 304 SS |
Notes:
- PFC Model has a touch screen
- 220V specifications available upon request
In Stock UV Kits - Lamps, Quartz Sleeves & Orings
| Model | SKU | List Price |
|---|---|---|
| GDS-8 | UVKIT-8 | $149.00 |
| GDS-12 | UVKIT-12 | $149.00 |
| GDS-15 (parts only) | UVKIT-15 | $149.00 |
| GDS-20 | UVKIT-20 | $149.00 |
See the ATS GDS Series Ultraviolet service manual
WQA Fact Sheet UV
Urbans Aqua is a stocking wholesaler of Residential & Commercial Water Treatment Equipment and Supplies including Purolite , Thermax and ResinTech Ion Exchange Resin; Calgon, Jacobi, Norit Americas & Haycarb Activated Carbon; Filter-Ag Plus; GreensandPlus; Pyrolox Advantage; KDF; Birm; Sand/Gravel; Clack, Fleck, Autotrol & AqMatic valves; Stenner Pumps & Parts.
Urbans Aqua sells exclusively to water treatment professionals. We do not deal with the general public.