Chemilizer CP33 and HN55 Water Driven Chemical Injector

The Chemilizer chemical injectors work just like an electric injector, but without the electricity.

Completely self-contained:

The Injector’s fluid powered motor borrows just enough energy from the main line to provide the proper injection. The injector connects to the water supply line in which the chemical is to be injected.

Unassisted Injection:

Completely automatic operation: it operates when the rest of the system operates. No need to turn the injector on or off. The operator has nothing to remember or forget.

Meters and pulsers no longer required:

Because the motor acts as both a source of control and power, additional meters and pulsers are not required.

Installation is simple and economical:

Chemilizer systems do not require wiring in hazardous conditions, no additional equipment, or costly site engineering to lay out pipes or conduit. In most cases, units can be placed into existing piping with little on-site preparation.


The CP33 Series chemical injector consists of three main parts:

Water Motor – The motor functions on demand with water flow. Inside the motor is a fixed diaphragm assembly that travels up and down with alternating filling of the upper and lower chambers. No chemicals go into the water motor.

Chemical Pump – Consists of 5 parts. Only one of these parts move, which makes maintenance simple and replacement inexpensive. Inserted into the bottom of the water motor is a positive displacement chemical pump. There are only 3 interior parts and the pump stem is the only moving part.

Flow Meter – A dual-sided flow meter provides visual indication of how much chemical you are injecting through your outflowing water line. The left-hand side measures in gallons per hour, the right-hand side in ounces per hour.


Model Flow Range Pressure Range Max temp Connection Unit Size Weight Price (CDN)
HN55 0.017-13 GPM 2 – 80 psi 110°F (43° C)  3/4″  11″x8.5″  6.75 lbs $689.00
CP33 12+ GPM 4 – 80 psi 110°F (43° C)  3/4″  11″x8.5″  8 lbs $689.00

Download a brochure here