
DeltaUV Universal Ballast for E/ES-15, E/ES-20, E/ES-40 Ultraviolet Sanitizer/Clarifier Systems, 120/230 V
Quick overview
- One ballast, three sizes Covers the E/ES-15, E/ES-20 and E/ES-40 ultraviolet sanitizer and clarifier systems.
- Dual voltage Rated for 120 V and 230 V supply, so it suits either wiring on site.
- Drives the UV lamp The ballast is what strikes and regulates the lamp, and a dead ballast means no ultraviolet treatment at all.
- A common failure point Electronics at the equipment pad take heat and moisture, and the ballast usually goes before the housing does.
- Part number varies in the source The listing shows both 70-10191 and 70-10420 for this ballast, so match yours against the label on the old unit.
- Sanitizer stays online Replacing the ballast restores the system without touching the plumbing or the quartz sleeve.
Frequently bought together

DeltaUV Universal Ballast for E/ES-15, E/ES-20, E/ES-40 Ultraviolet Sanitizer/Clarifier Systems, 120/230 V
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Product details
This is the universal replacement ballast for Delta Ultraviolet E and ES series ultraviolet sanitizer and clarifier systems, covering the 15, 20 and 40 sizes. It is rated for both 120 V and 230 V supply.
What the ballast does
A UV system treats water by passing it around a lamp inside a quartz sleeve. The ballast supplies and regulates the power that lamp needs. If the ballast fails, the lamp will not strike, water keeps flowing through an inert chamber, and the system quietly stops sanitizing while everything else looks normal.
One part across the range
Because it is a universal unit, the same ballast serves the E/ES-15, E/ES-20 and E/ES-40. That also means it is the part to order whichever of those three sizes is installed.
Before you order
The source for this listing carries two part numbers for the ballast, 70-10191 and 70-10420. Check the label on the unit you are replacing if you want an exact match. This listing is the ballast alone; the UV lamp and the quartz sleeve are ordered separately.
| Brand | DeltaUV |
|---|---|
| Manufacturer part number | 70-10191 |
| Also listed in source as | 70-10420 |
| Type | Universal ballast |
| Voltage | 120/230 V |
| Fits | E/ES-15, E/ES-20, E/ES-40 Ultraviolet Sanitizer/Clarifier Systems |
| Shipping weight | 4.2 lb |
| Ships | Parcel |
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