Dosatron® Lo-Flo Injector with Bypass – 3/4in, 14 GPM, 0.2%–2.0%, Viton® Seals

The Dosatron® Lo-Flo Injector with Bypass is a water-powered proportional dosing injector designed for accurate fertilizer, nutrient, chemical, and treatment injection in greenhouse, horticultural, irrigation, fertigation, and industrial applications. Operating entirely from water pressure, the injector requires no electricity and automatically meters concentrate in proportion to the volume of water flowing through the system.

This Lo-Flo model provides an adjustable 0.2% to 2.0% dilution range, equivalent to injection ratios from 1:500 to 1:50, with an injection range of approximately 7.5 mL to 75 mL per gallon. It handles water flow rates from 0.05 to 14 GPM and operates across a pressure range of 4.3 to 85 PSI.

An integrated bypass allows operators to divert water flow around the injector when dosing is not required or when the injector needs service or adjustment. This provides added flexibility while helping maintain water flow through the surrounding irrigation or process system.

The injector is equipped with Viton® seals, which are designed for use with acidic chemistries and are compatible with all soluble cutting oils. The chemical-resistant seal configuration makes this Dosatron well suited for demanding applications involving fertilizers, nutrients, acids, sanitizers, plant protection products, and other compatible solutions.

What Is the Dosatron Lo-Flo Injector with Bypass Used For?

The Dosatron Lo-Flo Injector is designed to automatically mix a concentrated solution into a flowing water supply at a selected proportional rate. As water moves through the injector, water pressure powers the internal dosing mechanism, eliminating the need for electrical power or a separate dosing motor.

This makes the injector particularly useful for fertigation, nutrient delivery, chemical application, sanitation, crop protection, and water-treatment systems where a consistent injection ratio is required across changing water flow conditions.

Key Features and Benefits

• Water-powered operation: Uses system water pressure to power proportional injection without electricity.
• Integrated bypass: Allows water to be diverted around the injector during maintenance, adjustment, or periods when dosing is not required.
• 0.2% to 2.0% adjustable dilution: Provides flexible dosing for a wide variety of fertilizers, nutrients, chemicals, and treatment products.
• 1:500 to 1:50 injection ratio: Supports both lower- and higher-concentration proportional dosing requirements.
• 7.5 to 75 mL per gallon injection range: Gives operators a practical reference for concentrate delivery per gallon of water.
• 0.05 to 14 GPM flow range: Suitable for low-flow and moderate-flow greenhouse, irrigation, and process systems.
• 4.3 to 85 PSI operating pressure: Accommodates a broad range of water-pressure conditions.
• Viton® seals: Provides chemical resistance for acidic chemistries and compatibility with all soluble cutting oils.
• Automatic proportional dosing: Injection remains proportional to water flow for consistent mixture concentration.
• No electrical connection required: Simplifies installation and allows use in locations where electrical service is inconvenient or unavailable.
• 3/4-inch connections: Designed for integration into compatible irrigation and process plumbing systems.
• Broad application range: Supports fertilizers, nutrients, organics, beneficials, crop-protection products, acids, sanitizers, and other compatible solutions.

Water-Powered Proportional Dosing

Unlike electric injection pumps that require an external power source, the Dosatron Lo-Flo Injector is powered by the pressure and flow of water moving through the unit. Water activates the internal dosing mechanism, which draws concentrate from a separate solution container and mixes it into the water stream according to the selected dilution setting.

Because the dosing action is proportional to water flow, the injector is designed to maintain the selected concentration as system flow changes within its specified operating range. This makes it useful for irrigation zones and other applications where water demand may fluctuate during operation.

Integrated Bypass for Easier System Operation

The built-in bypass provides additional control over the dosing system by allowing operators to route water around the injector when chemical or nutrient injection is not needed.

This can be particularly useful during maintenance, injector servicing, flushing, system adjustments, or irrigation cycles that require untreated water. Instead of removing the injector from the plumbing system, the bypass gives operators a convenient method for maintaining water flow while taking the dosing unit temporarily out of the active flow path.

Adjustable 0.2% to 2.0% Dilution Range

The Dosatron Lo-Flo Injector provides an adjustable concentration range from 0.2% to 2.0%. This corresponds to proportional injection ratios ranging from 1:500 to 1:50.

For easier application planning, the range can also be expressed as approximately:

• 0.2%: Approximately 7.5 mL of concentrate per gallon of water
• 2.0%: Approximately 75 mL of concentrate per gallon of water

Intermediate settings allow operators to select the concentration appropriate for the product being injected. Always follow the concentrate manufacturer's mixing, application, and safety instructions when establishing an injection rate.

Viton® Seals for Demanding Chemical Applications

This Dosatron injector is configured with Viton® seals. Viton seals are designed for chemical resistance and are particularly suited to acidic chemistries. They are also compatible with all soluble cutting oils.

Seal compatibility is an important consideration when selecting a chemical injector because concentrated solutions can contact internal injector components before being diluted into the main water stream. Always verify chemical compatibility for the specific concentrate and concentration being used.

Ideal Applications

The Dosatron Lo-Flo Injector with Bypass can be used with compatible products and systems for applications including:

• Greenhouse fertigation
• Commercial horticulture
• Nursery irrigation systems
• Indoor growing facilities
• Controlled-environment agriculture
• Fertilizer and nutrient injection
• Organic nutrient programs
• Beneficial microorganism applications
• Fish emulsion
• Compost and nutrient teas
• Plant growth regulators
• Herbicides
• Insecticides
• Fungicides
• Algicides
• Chlorine applications
• Acid injection
• Wetting agents
• Sanitizers
• Nematode applications
• Compatible industrial chemical dosing

Dosatron Lo-Flo Injector with Bypass Specifications

Frequently Asked Questions

What is the Dosatron Lo-Flo Injector with Bypass?

The Dosatron Lo-Flo Injector with Bypass is a water-powered proportional dosing injector that automatically mixes fertilizer, nutrients, chemicals, or other compatible concentrates into flowing water at an adjustable rate between 0.2% and 2.0%.

Does the Dosatron Lo-Flo Injector require electricity?

No. The injector is powered entirely by water pressure and does not require electricity or an electric dosing motor.

What is the flow range of the Dosatron Lo-Flo Injector?

The injector is rated for water flow rates from 0.05 to 14 gallons per minute (GPM).

What pressure does the Dosatron Lo-Flo Injector require?

The injector operates within a listed water-pressure range of 4.3 to 85 PSI.

What is the dilution range of this Dosatron injector?

The injector has an adjustable dilution range from 0.2% to 2.0%.

What does a 1:500 to 1:50 injection ratio mean?

The Dosatron can be adjusted from approximately 1 part concentrate for every 500 parts water at the low end to approximately 1 part concentrate for every 50 parts water at the high end of its dosing range.

How many milliliters per gallon does this injector deliver?

The listed injection range is approximately 7.5 mL to 75 mL of concentrate per gallon of water, depending on the selected dilution setting.

What does the bypass do on the Dosatron injector?

The integrated bypass allows water to flow around the injector when dosing is not needed or when the injector requires maintenance or adjustment. This helps maintain water flow through the surrounding system without requiring the injector to be physically removed.

Can the Dosatron Lo-Flo Injector be used for fertilizer?

Yes. The injector is designed for applications including fertilizers, nutrients, organics, fish emulsion, teas, and other compatible horticultural concentrates.

Can the Dosatron Lo-Flo Injector be used in a greenhouse?

Yes. It is well suited for greenhouses, nurseries, indoor growing facilities, fertigation systems, irrigation systems, and other controlled-environment agriculture applications.

What are Viton® seals used for?

The injector's Viton® seals provide chemical resistance and are designed for acidic chemistries. The seal material is also compatible with all soluble cutting oils.

Can this Dosatron injector be used with acids?

The Viton-seal configuration is designed for acidic chemistries. Chemical compatibility should still be verified for the specific acid, concentration, and application being used.

What products can be injected with the Dosatron Lo-Flo?

Listed applications include fertilizers, nutrients, organics, beneficials, fish emulsion, teas, herbicides, plant growth regulators, chlorine, insecticides, fungicides, algicides, acids, wetting agents, sanitizers, and nematodes. Always verify compatibility with the specific concentrate before use.

What size plumbing connection does the Dosatron Lo-Flo use?

The injector uses 3/4-inch connections for integration into compatible irrigation or process piping.

What is the maximum operating temperature?

The listed maximum operating temperature is 104°F.

How much does the Dosatron Lo-Flo Injector weigh?

The injector weighs approximately 6 pounds.

What comes with the Dosatron Lo-Flo Injector?

The injector includes a mounting bracket, suction hose, weighted strainer, and quick start guide.

Does the Dosatron automatically adjust dosing when water flow changes?

The Dosatron is a proportional dosing injector, meaning the amount of concentrate injected is designed to remain proportional to the volume of water passing through the unit while operating within its specified flow and pressure ranges.

Why Choose the Dosatron Lo-Flo Injector with Bypass?

The Dosatron® Lo-Flo Injector with Bypass combines accurate proportional dosing with water-powered operation and convenient bypass control. It gives growers and operators a straightforward way to automate nutrient or chemical injection without electricity while maintaining flexibility for maintenance, flushing, and untreated-water operation.

With a 0.2% to 2.0% adjustable dilution range, 1:500 to 1:50 injection ratio, 0.05 to 14 GPM flow capacity, 4.3 to 85 PSI operating range, Viton® seals, and integrated bypass, this Dosatron injector is a versatile solution for greenhouse fertigation, horticultural irrigation, crop treatment, sanitation, and compatible industrial dosing applications.