Two links are shown below to assist you with both selecting the correct Delta UV Series and then the correct Model within that Series for your application.  It is recommended that you first determine which UV Series is correct for your application (more than one may be correct for your application) and once this is determined, then select the proper size system within your selected Series. Need some help selecting the correct system? Contact Delta UV Customer Service and we will be glad to recommend the proper system for your application

Technical Charts and Tables

UV Series Comparison Chart
This chart shows the different applications that are correct for each Series of UV system. Once the applicable Series is determined, proceed to the Series Model Selection Chart below to select the proper size system for the Series of your choice.

 
Series
Swimming Pool
Ornamental Pond
Koi Pond
Spa
Water Feature
 
EA
Small
Small
Small
Portable
Small
 
EP
Medium
Medium
Medium
In-Ground
Medium
 
E

Most All

Most All
Most All
In-Ground
Most All
 
ES
Most All
Most All
Most All
In-Ground
Most All
 
EM
 Commercial
Large
Large
Large
Large


Series Model Selection Chart
Selecting the proper Delta UV Series and Model for your application is a simple matter. The effectiveness of the UV unit to do its sanitizing job is directly related to proper water flow trough the UV system's wet chamber. If water flows in and out of the wet chamber too quickly, the water and its contaminates will not be exposed to the UV-C rays emitted by the UV lamp inside the unit's wet chamber for a sufficient amount of time to achieve proper bacteria eradication. Thus matching the flow rate of the circulation pump to the proper size Delta UV system is most important to achieve proper killing power from the UV system..

The piping size, the length of piping from the water vessel to the equipment all contribute to different flow rates for any given  pump. However, you can use the chart below to determine which Delta UV Model is right for your application. Even though the pairings of different pumps to different Delta UV units shown below is proper, due to the relative small cost difference between a smaller UV unit and the next larger size unit, you may wish to consider moving up in size to ensure the absolute maximum performance from the Delta UV system for your application.

Once you have determined the Horsepower (HP) of the circulation pump (found on the motor nameplate on the pump motor) use the chart below to select the proper Delta UV Model.

 
Pump Size
Delta UV Model
 
3/4 HP
E-5, ES-5, EP-5, EA-40
 
1 HP
E-10, ES-10, EP-10
 

1-1/2 HP

E-20, ES-20, EP-20
 
2 HP
E-40, ES-40, EP-40
 
2-1/2 HP
E-40, ES-40, EP-40
EA Series - Consult Data Sheet for maximum flow rate of each model up to EA-28.
EM Series - Contact Delta UV Customer Service for sizing assistance.