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Chemilizer™ HN55 Injector - 1:128

, CH9000-209
QC Supply Part #: 120177
Shipping: Standard
Availability: In stock

This proportional injector runs off of water flow, rather than electricity. Use to inject a variety of chemicals, medications and more into your water system.


The Chemilizer™ 1:128 Fixed Ratio Injector is an industry-leading injector utilizing years of proven diaphragm technology. Powered by the existing water supply, the internal motor drives the chemical pump, injecting very precise amounts of chemical. The speed of the water motor and pump are proportional to the water flow, ensuring the Chemilizer™ will inject consistent amounts of chemical regardless of fluctuation in water pressure and flow.

This injector runs off of water flow and works with system flows as low as 1 gallon per hour up to 780 gallons per hour (13 gallons per minute). The HN55 will work with gravity via a water drop of as little as 5 feet (1.5 meters).

Applications: Disinfectants, sanitizers, fertilizers, micronutrients, biologicals, fungicides, algaecides, animal health supplements and medications, soaps, surfactants, and many other chemicals and solutions.

Selection is typically determined by the chemicals to be injected. Chemilizer™ HN55 Injectors with adjustable pump are also available. For help choosing the right injector to meet your needs, give one of our experts a call today at 800-433-6340.


  • No water filtration needed
  • Unique bypass chemical injection design
  • Excellent low flow capabilities
  • Flow Rate: 0.02-11 GPM
  • Pressure Rating: 3-85 PSI
  • Weight: 6.75 lbs
  • Size: 11" H x 8.5" W x 10" D
Item # Model Injection Ratio System Water Flow Operating Pressure Inlet / Outlet Weight
120177 HN55 1:128 1 GPH - 780 GPH 3-85 PSI 3/4" MGHT 6.75 lbs.
120177-1:100 HN55 1:100 1 GPH - 780 GPH 3-85 PSI 3/4" MGHT 6.75 lbs.
120177-1:500 HN55 1:500 1 GPH - 780 GPH 3-85 PSI 3/4" MGHT 6.75 lbs.
Brand Chemilizer
Manufacturer Part Number CH9000-209



Manuals & Resources


Customer Reviews

  • 5 Stars


    Review by on Jun 5, 2014

    It was easy to install and worked great supplying fertilizer through our drip tapes that run on low pressure and volume

  • 5 Stars

    Best on the market

    Review by on Apr 11, 2014

    Bought this one to replace my Chemilizer chlorine injector that froze during a severe cold spell this past winter. Use the injector for the iron bacteria removal system in my household water. These pumps are the way to go, and this web site had the lowest price.

  • 5 Stars

    Big Improvement

    Review by on Mar 20, 2014

    So far so good. This injector seems to be far superior to our old one simply because the fertilizer stays completely outside the injector. I like the use of hoses to hook up the inflow and outflow---makes installation a breeze. Great product.

  • 5 Stars

    Great Product

    Review by on Aug 26, 2013

    Great product and customer support!

  • 5 Stars

    Great product and service!

    Review by on Aug 15, 2013

    Out standing product worked first time I set it up. Service from QC Supply was great.

  • 5 Stars

    Very good

    Review by on Mar 29, 2013

    Just installed this week. Using the pump for a peroxide injection system in my home. Easy install and the results are obvious. Keeping the concentration of the chemical right is the key. The "clack clack" of the pump in the basement is a good way of knowing it is working and like most house sounds it quickly becomes background.

  • 5 Stars


    Review by on Jul 25, 2012

    Very thrilled at the level of service. Things just don't happen that quick with other companies! Wow!

  • 5 Stars

    Totally trouble free.

    Review by on Jul 25, 2012

    This is our 3rd Chemilizer. We are a commercial greenhouse and have used other varieties of fertilizer injectors and we would eventually reach the point where we had to replace rings, pistons, etc., and then the problem was trying to figure out where to find replacement parts. We got our first Chemilizer about 7 years ago and have NEVER had one problem. That's why we now have 3.

  • 5 Stars


    Review by on Jul 25, 2012

    Very easy to install. Works great and is much less expensive than other injectiors.

  • 5 Stars

    Great product

    Review by on Jul 25, 2012

    We are using the pump for chlorine injection in water purification systems in the mountains of Honduras. The pump is part of a simple but sophisticated water purification system that uses no electricity to purify water for several communities ranging from 250 to 4000 people. The water is used for drinking, brushing teeth, cooking and taking care of infants. The chlorine adds "residual" disinfectant to water which is sold at very low cost in 5 gallon bottles.

  • 5 Stars

    the best pump around

    Review by on Jul 25, 2012

    This pump will blow your mind! i think this is the best easy pump on the market. when you get done using this pump just flush it with clean water and then when you need it again it will pump away. reliable pump. Do the smart thing...buy a chemilizer, your flock or heard or whatever needs one.....TODAY!

  • 5 Stars

    great, very useful

    Review by on Aug 20, 2011

    I use the Chemilizer to fertilize my orchids through the garden hose. I started with one unit but have added a second in series to allow me to use two fertilizers at once. These are great as they allow me to save a lot of time fertilizing and are more efficient in the use of fertilizers.
    I plan to connect this to the automatic sprinkler system in Spring to feed the plants automatically.

    Just one tip, I recommend for those outside the USA to also purchase a set of hose fittings as the threads are different in Australia.

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