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Home Pool Ultraviolet Sanitation Systems Delta UV Replacement Parts Delta Ultraviolet UV Universal Ballast E/ES 20/40CD 120V/230V | 70-10420 | 1000-2648
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into 2021/early 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. Please contact us via Live Chat the quickest response. 

Delta Ultraviolet UV Universal Ballast E/ES 20/40CD 120V/230V | 70-10420 | 1000-2648

Delta Ultraviolet UV Universal Ballast E/ES 20/40CD 120V/230V | 70-10420 | 1000-2648 Delta Ultraviolet UV Universal Ballast E/ES 20/40CD 120V/230V | 70-10420 | 1000-2648 Delta Ultraviolet UV Universal Ballast E/ES 20/40CD 120V/230V | 70-10420 | 1000-2648

Platinum Preferred Manufacturer
  • Universal Ballast E/ES 20/40CD 120V/230V
  • Replaces 70-10420
Q & A


Delta Ultraviolet UV Sanitizer ES Series | ES-110 | 110 GPM | 35-08646 38-08646
Delta Ultraviolet UV Sanitizer ES Series | ES-110 | 110 GPM | 35-08646 38-08646
Replacement Parts

Delta Ultraviolet UV Sanitizer ES Series | ES-46 | 46 GPM | 35-08642 38-08642
Delta Ultraviolet UV Sanitizer ES Series | ES-46 | 46 GPM | 35-08642 38-08642
Replacement Parts

Offer an incomparable and safer pool experience for your family and friends-silky, smooth, odorless and salt free.
The water circulates through our Delta UV sanitizer that uses the type C ultraviolet rays to completely purify water deactivating all the dangerous micro-organisms resulting in the cleanest and purest water possible for your pool.  As small residual of chemicals are used in order to destroy any micro-organism that do not find their way into the UV snaitizer. 
For Cleaner, Healthier Pool Environment   
  • Drastically reduces the costs associated with chemical use 
  • Destroy the micro-organisms that chlorine and salt systems can't (Cryptosporidium, Giardia, etc.)
  • No nasty chlorine smell
  • No more red eyes, dry skin or damaged hair
  • Easier pool maintenance, simple, reliable
  • Minimal ongoing expenditure (lamp replacement expected every 3 years for seasonal pools)
  • Prolongs pools life - won't erode pools surface or equipment
  • Compatible with all types of coatings and filters
  • A treatment that can be automated with an existing chlorinator
  • Easy and Quick installation and maintenance   
The UV Concept 
The sun emits invisible light - ultraviolet light. Through leading edge technology, this natural phenomenon is reproduced inside the sanitizers of the Delta UV product range using powerful UV-C ray lamps. At 254 nanometers, the optimum wavelength for destroying micro-organisms (viruses, bacteria, algae, yeast, mold, etc.), Delta UV-C rays penetrate and disrupt their DNA, permanently deactivating germ cell metabolism so they cannot reproduce. 
Simplicity and Health
The effectiveness of type C ultraviolet rays as a means of sanitization hasbeen known for more than a century. It has been used in various applicationssuch as for drinking water purification, aquaculture, fish farming, and inhospitals and the pharmaceutical industry. After filtration, water circulatesthrough the Delta UV Sanitizer for complete disinfection - bacteria, virusesand algae are completely deactivated without side effects or dangerousby-products. This process results in the cleanest and purest water possiblefor your pool, and drastically reduces your need for chemical products. Asit is not possible to build a pool where 100% of the water passes through afilter, you will still need to maintain a small residual of chemicals in yourpool in order to destroy any micro-organisms that do not find their way intothe UV sanitizer. 
E&ES Product Line Specifications
  • Power Input: 120/240V/50/60hz
  • Housing: E Series-special 8’’ PVC PlasticES Series-special 8’’ PVC Plastic with Stainless Steel reflective Inner Wrapper& Mirror Polished Stainless Steel Outer Wrapper
  • Ballast: Electronic
  • Lamp: High Output – Low Pressure (13,000 hrs.)
  • Dry Fire Protection: Yes
  • Pressure Gauge: Yes
  • Indoor/Outdoor Installation: Yes
  • Limited Warranty: 3 Years ES-Series / 2 Years E-Series (1 year bulb)
  • Plumbing options : 2’’ PVC Unions


Brand: Delta UV
Q & A
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Browse 4 questions Browse 4 questions and 4 answers
Does it apply to the E-110?
Henry H on Jun 21, 2019
BEST ANSWER: Yes it does.
Does this work for D-110?
A shopper on Jun 30, 2021
BEST ANSWER: This is a plug in ballast. There is a D and E version. One hard wires into your system and the other is a plug and your UV unit will have a flow sensor. This ballast works great for my 110 unit the last 2 years.
Does this work with D-20 model?
Bill K on Aug 22, 2019
BEST ANSWER: Mine was an ea20 and it worked well. I believe it will
Is this in stock?
A shopper on Apr 16, 2021
4.2 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Works well, recommend.
Original ballast to pool build lasted only 4 years in an indoor Install. This replacement is same brand/model but appears to be an upgrade, was an easy install and works great. Would recommend it.
August 24, 2020
1 year ago
Rated 5 out of 5
Delta UV Ballast
Works as intended. I have no other comments to add to this review
September 27, 2019
over 2 years ago
Rated 5 out of 5
Great purchase experience.
Received the ballast I needed. Delivery time was accurate. Product received in great condition. Exactly what I ordered. Would highly recommend.
August 30, 2021
3 months ago
Rated 5 out of 5
rebuilding a Delta ES 20
The unit is external now and not under the top cover of the UV unit. Had to enlarge the hole in top of the unit to feed the power cord through..easily done with a Dremel. Works as advertised.
September 3, 2019
over 2 years ago
Rated 1 out of 5
Haven't tried it yet
My original ballast lasted 6 years and malfunctioned at the end of the pool season. So I will install in in spring. Therefore the 1 star - had to input something.
Great service and fast shipping.
October 23, 2019
over 2 years ago
2 Years
Delta Ultraviolet Corporation warrants to every original Purchaser of Delta UV’s Series Ultraviolet Unit, that the product will be free from defects, as defined herein, for a period of two (2) years - (E/ES-Series). If at any time during the Limited Warranty period, any defect, as defined herein, prevents the product from performing correctly in an application for which it was designed, Delta UV will repair or replace the product (at Delta UV’s option) as outlined herein:
This Limited Warranty DOES cover the UV unit, its components, and defects thereof against:
  • Manufacturing Defects
  • Material Defects – Ballast, Pressure Gauge, Pressure Switch (1 year)
  • Housing Corrosion Causing Leakage (ES Series)
  • Plastic Component Degradation
  • Bulb failure during 1st year (Pro Rated)
This Limited Warranty DOES NOT cover the following UV unit defects:
  • Failure Of Any Covered Condition When Caused By Any Of The Following:
  • Metal Corrosion Due To Salt Water Use
  • Mechanical Abuse
  • Glass Component Breakage
  • Improper Installation
  • Bulb Failure After One Year
  • Acts of War or God
  • Operation At Pressures Greater Than 40 PSI (3 Bar)
  • Freeze Damage
  • Any Failure Not Indicated As “Covered Warranty Item” Herein 
  • Improper Operating Voltage
Note 1: During the duration of this Limited Warranty, should any failure occur, the unit should be inspected at the site to determine the cause of failure, and if that failure is shown to be a covered item, the Original End User (User) must request a written Return Goods Authorization (RGA) from Delta UV, prior to any product return. Any returned unit is to be accompanied by Delta UV’s RGA and is to be returned freight prepaid to Delta UV for Limited Warranty evaluation. The User is responsible for any freight damage associated with such return. Unit failures, or components thereof, found to be covered under this Limited Warranty will be repaired or replaced (at Delta UV’s option) without cost to the User and will be returned to the User via UPS Surface, at the User’s expense. Delta UV shall be the sole judge in determining the cause of failure of any UV unit. Units arriving in broken condition will not be warranted. The term “Original End User” (User) shall mean the person or company that was in possession of the physical location where the UV unit was originally installed, at the time of first installation, as evidenced by an original invoice from the selling company to the User at the location where the unit is to be returned. A photo copy of said original invoice must accompany the UV unit RGA paperwork. UV units received unaccompanied by the required documentation will not be accepted by Delta UV for Warranty evaluation and will be returned to the User in the same condition as received, freight collect (COD) if the User fails to provide the required documentation within ten (10) days from date of notification of missing documentation from Delta UV. Any unit returned to Delta UV COD or freight collect will be rejected from the freight carrier.
Note 2: This Warranty is Limited in that it does not cover any monetary reimbursement for freight charges, for removal and/or installation labor, or any other incurred costs by any other person(s) or firm(s), including (but not limited to) any consequential damage or loss of use that might be claimed. The Limited Warranty period shall commence upon the date of sale to the User, but in all cases no later than one hundred twenty (120) days after the date of manufacture of the UV unit, as shown on the Delta UV date code located on the product identification label, whichever occurs first. UV units received with factory identification missing, mutilated or altered, or units received containing components not supplied by Delta UV or modified in any way, will not be warranted under any circumstances.
OTHER RIGHTS - This Limited Warranty supersedes any and all previous Limited Warranties for this product, gives you specific legal rights, and you may have other rights which vary from state to state.
1535 West Rosecrans Ave
Gardena, CA 90249
Phone 310-323-6400
Fax 310-323-6403

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