Odor or Rust Problems? Now you can improve taste and get rid of odors!

  • Fully automatic. Low maintenance! Just add pellets every 1 - 6 months as needed.

  • Clean, fresh, odor-free water throughout the home. Remove chlorine residual with our optional carbon filter.

  • Pure calcium hypochlorite NSF certified Chlorine Pellets. Sold Separately.

    Includes FREE SHIPPING.

  • See optional contact tank and carbon backwash filter for chlorine-free, fresh water throughout the home at a low cost.

satisfaction guarantee 

Dry Pellet In-Line Chlorinator Model 400

Dry Pellet In-Line Chlorinator Model 400

Code: CS000120 List Price: $531.00 Your Price: Shipping Weight: 8.00 lbs. Manufacturer: Automated Pure Water Inc. Manufacturer#: Model400
Ratings Snapshot
out of 5
5 (4)
4 (1)
3 (0)
2 (0)
1 (0)
Would recommend this product.

Choose your options:

Download brochure for more information

Chlorine Pellet Options:

Free Chlorine Test Kit & Options:

Questions? Get a Fast Answer to your water treatment problems, click here!


  • Dry Pellet In-Line Chlorinator Model 400 is designed for well water applications, not pools like others online
  • We recommend a contact tank be installed after the Chlorinator to give some time after the chlorine has been injected
  • After contact tank, if desired install a low cost whole house carbon backwash filter for clean water throughout the house!
  • If being used for residential applications, a whole-house carbon filter is recommended after the contact tank.
  • The Model 400 dry chlorine pellet feeder will operate on a varying pressure such as a home well system or on a constant pressure such as a sprinkler or pool system (up to a maximum of 75 psi).
  • No messy chemicals; no moving parts; no electricity required.
  • Corrosion-proof construction.
  • PVC Construction from all NSF-certified materials. PVC used in the Model 400 is NSF certified for drinking water.
  • Adjustable metering of chemicals. Fast and easy refilling.
  • Never needs priming.
  • Holds about 4 lbs of 3/8" pellets in one filling.
  • One filling with pellets will typically treat 15,000 to 20,000 gallons of water before requiring refilling.
  • For best results use the Sentry 3/8" 1 gram pellets.
  • When adjusted to the #1 hole setting, the unit should dispense approximately 2.0 ppm of chlorine and the system should process approximately 15,000 to 20,000 gallons of water before needing to be refilled.
  • Easy to install.
  • Note: For gravity or non-pressure tank installations, the optional Feed Rate Valve must be ordered separately. See below.
  • For best results, use a contact tank and carbon filter after the Model 400.
  • Includes two 1-1/2" PVC slip unions plus two 3/4" NPT (threaded) unions.
  • If you have 1" or 1-1/4" pipe, you can purchase bushing reducers to go from 1-1/2" to your pipe size at most hardware stores

  Why use chlorine pellet feeders?  
  • Chlorine pellets are easy to use.
  • No mixing of bleach or water
  • Kills iron bacteria
  • Eliminate sulfur (hydrogen sulfide) odors
  • Oxidize iron, manganese for easier filtration
  • Easy to install yourself or by any plumber
  • Low cost and very effective
  • Choose down-the-well feeder OR in-line feeders
We not only sell chlorination systems for well and spring water, we provide expert help in selecting and adjusting your chlorination system so you can easily and quickly get your chlorinator online and working properly. The result is guaranteed performance saving you time and money.

Click here to get some quick assistance using our Fast System Selector Form.

Need to have your water tested?

Click here to get a comprehensive test kit with laboratory analysis delivered to your home, now only $29.95 for a limited time!
       how to install a home chlorinator

We wrote the book on Home Chlorination Systems! Easy to read, packed with useful how to guides, diagrams, charts and pictures.

Now for a limited time we will send you our "The Complete Guide to Home Chlorination Systems " for FREE (reg. $39), and include a $25 COUPON!



In-Line Pellet Feeder
Well Pellet Feeder
  dry in-line chlorine feeder for well water sentry well chlorinator

A Few of Our Valued Commercial/Industrial Customers

  • Clean Water Systems & Stores, Inc., Water Treatment Equipment,Service & Supplies, Santa Cruz, CA