Inject a little profit! Take the mystery out of injection systems and improve your bottom line! What is injection? In the pest control industry “injection” systems are actually spray systems that include precision metering pumps to “inject” a precise amount of chemical into a flow of water. Injectors are available in variable or fixed rate models. Variable rate injectors allow you to adjust the amount of chemical into the flow within a prescribed range. Fixed rate injectors are not adjustable, they always inject chemical at a specific rate set at the factory. Injection systems such as this one can apply a wide variety of products.
What are the components and what do they do? In simple terms an injection “system” requires a water supply, chemical supply, injection point, mixing chamber, flow meter, and delivery method. Some variables apply to each of these components. Water supply : Water can be taken directly from municipal or private water supplies, a tank, or a combination of the two. Tankless systems require a commercial backflow preventer, tanker systems are generally constructed with an air gap fill pipe to prevent siphoning back into the water source. Although not strictly required for a nurse tank that only handles raw water, an air gap is usually installed any way. Combination systems require the installation of an air gap and automatic fill valve. The fill valve allows the tank to be constantly filled without monitoring. To pump or not to pump? The second component in the water supply is the pump. If you use a tank-less system and water pressure in your territory varies significantly, or you manage a cross section of municipal and private water supply properties you may want to consider adding a booster pump to the supply side of the system. The booster pump maintains a consistent pressure making it much more reliable. The additional benefit of consistent pressure is it makes it easier for your technicians to become proficient with the system. Pumps are required on tanker and combination systems. In every case pumps will operate at low pressures. Chemical Supply : Chemical is taken directly from the manufacturers container via a siphon tube (straw). Chemical containers must be kept locked therefore a secure storage area must be provided for the containers. Injection Point : The metering pumps themselves are installed at this point. The injectors are powered by the flow of water through the metering pump “motor”. Keeping the flow consistent in both volume and pressure will improve both the performance and longevity of the injectors. These pumps are volumetric devices so the metering process is not affected by downstream changes like venturi style injectors are. Metering pumps are very succeptible to “water hammer” so an anti-hammer device is placed between the injectors and the treating hose. Mixing chambers are required to complete the mixing process of the raw water and injected chemical. When the flow leaves the mixing chamber it is a “finished solution” Flow Meter : Because you are no longer applying a fixed quantity of solution (ie a 50 gallon tank) you need to be able to determine how much finished solution you are putting out. The flow meter allows you to calibrate injectors as well as determine quantity used on each job. Delivery Method : Hand Held applicators such as guns and wands require hose capable of sufficient volume at LOW pressure. The solution to this is to increase the hose diameter, usually an 1/8”-1/4” from where you are now. Why should I use injection? A) Save Time: No more batching, arrive at the site and begin treating. Customers using injection systems report that techs are home sooner or accomplishing more than their counterparts without injection. B) Save Chemical: Injection systems create finished solutions far more accurately than batch mixing. The injector does not add a “little for good measure”, does not round up or down, or make math mistakes. C) Limit liability: Eliminate traveling with 10, 25 or even a hundred gallons of finished solution. Your insurance company will approve. D) You may also be able to move a percentage of your fleet into smaller trucks, remember the under 10,000 pound rule. Benefits like these sift directly to the bottom line. Increased technician efficiency, lower chemical costs and reduced overhead can significantly improve your profitability. What is the downside? Injectors can be fragile : Injectors, as stated previously, are precision instruments, which need to be protected from abuse. Systems need to be designed with real world conditions in kind. Technicians should be trained that injectors are highly susceptible to spikes in pressure, or over pressure situations. When operated within the design parameters injectors are highly accurate and reliable, capable of years of service. Not your average mousetrap ! It is generally not recommended to field-repair an injector, but a downed injector could mean costly down time. The obvious solution is adequate annual maintenance. Back up systems to finish the day such as our dual mix tank system can keep you technician working to finish the job, and “loaner” systems also minimize long-term repairs. Using the customers water: For obvious reasons customers may object to the notion of you connecting to their water supply, being prepared for these questions and training technicians in proper etiquette will minimize customer concerns. A) Talk about pennies not gallons. A customer is much more likely to “give you” 45 cents worth of water to treat their property than if you ask for 200 gallons. B) If you are using a combination system always connect to water supply before you begin treating. The customer does not want you to refill your tank with their water and then leave. C) Be prepared to explain the backflow prevention system, the customer must be comfortable with your ability to keep their water supply safe. Where do I start ? The starting point in designing an injection system is by determining A) The chemical(s) you wish to use, and the conditions for their use. This will determine the type and size of your injector and related components. B) Your water supply system and options C) Rate of delivery and delivery system. Apply these specifications to a complete “injection system” that includes good ergonomics, chemical storage areas, and curb appeal, and watch your bottom line grow
![]() Tank-less systems are lightweight and truly portable A truly portable Termidor System. Meet the label guidelines for a separate mixing system for Termidor. Our Chemilizer injector is factory pre-set for .06% the exact ratio you need. A simple aluminum tote carries the injector on one side and a 2.5 gallon jug on the other. Apply up to 400 gallons of finished solution in one operation! Compact Truck Termite/GHP Injection System ![]() Separate injectors keep repellents and non-repellents from cross-contamination. Designed to install in a compact pickup or our “Response” body for compact Trucks this complete 12-volt system includes all the features you need for residential termite and GHP work. Dual injection systems handle Premise or Termidor. A dual mix tank means you can run injection or mix in the tank if you need to. Self-rewinding supply reel and lightweight delivery hoses complete the package. Lawn Trucks![]() A complete Lawn Truck in a six foot box
Remember fertilizer weight in calculations. Can you build a productive lawn truck on a light duty platform? Why yes you can! With the Injection system you utilize the customers water. Remove the huge overhead of medium duty trucks and turn your bottom line from mediocre to outstanding. Even if you only utilize this system as a trouble shooter or starter truck it's curb appeal will win you customers. Pretreat Trucks![]() Redundant Injectors
Clean lines and high production! In the highly competitive “pre-treat” market minutes can make the difference between profit and loss. Eliminate the costly time spent “batch mixing”. Just show up at the jobsite, kick over the motor and GO! A high volume low-pressure pump is the heart of this pre-treat injection system. Precision injectors insure proper mix rates, redundant injectors eliminate “down time”, a ¾” hose minimizes friction loss and allows high tip volumes with low pressures.
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