Dilution Solutions 1 1/2 in Check Valve

1-1/2 Inch Check Valve for Dosatron Injectors – CV112

The Dilution Solutions CV112 is a 1-1/2 inch check valve designed for use with Dosatron proportional injectors that have viton seal assemblies and a 1-1/2 inch connection. Check valves allow fluid to flow in one direction only — in a nutrient injection system, the check valve prevents the flow from reversing direction, which could cause concentrated nutrient solution to backflow into the supply water line.

The CV112 is constructed from polypropylene for resistance to the acids, salts, and other chemicals used in hydroponic nutrient solutions. It installs at the 1-1/2 inch connection point on the compatible Dosatron unit.

Key Features & Benefits

• Viton Seal Compatible — Designed for use with Dosatron units that have viton seal assemblies.
• Poly Construction — Polypropylene construction for chemical resistance to nutrient solution components.
• Prevents Backflow — Allows flow in one direction only — blocks concentrated solution from entering the supply line.
• Outlet Side Installation — Installs at the outlet connection point of the compatible Dosatron unit.
• Chemical Resistant — Resists the acids, salts, and mineral compounds common in hydroponic fertigation systems.

Who Should Use This Check Valve

The DS1.5CV is for growers using Dosatron proportional injectors with 1-1/2 inch connections in irrigation and fertigation systems. Install it at the outlet of a compatible Dosatron viton seal unit to prevent nutrient solution backflow into the supply line, protecting the upstream water source from contamination.

Why Dosatron Installations Require Check Valves

Dosatron proportional injectors draw nutrient concentrate from a separate container and blend it into the water stream at a fixed ratio based on water flow rate. If upstream pressure drops or the water supply pump stops, the pressure differential can cause nutrient-laden water downstream of the injector to flow backward through the injector and into the supply line. A check valve installed at the outlet of the injector mechanically blocks this reverse flow regardless of pressure conditions, preventing nutrient contamination of the upstream supply.

Frequently Asked Questions

What Dosatron units is the DS1.5CV compatible with?

The DS1.5CV is designed for Dosatron injectors with viton seal assemblies requiring a 1-1/2 inch connection. Confirm the seal type of your installed Dosatron unit before ordering, since seal material determines valve compatibility.

What is a check valve?

A check valve allows fluid to flow in one direction only. It mechanically blocks reverse flow so that concentrated nutrient solution cannot travel backward into the supply water line.

What material is it made from?

The DS1.5CV is constructed from polypropylene for chemical resistance to nutrient solution components. Polypropylene holds up well against the acids, salts, and mineral compounds common in hydroponic fertigation systems.

When should I inspect or replace the check valve?

Inspect the CV112 whenever you service the Dosatron unit or notice irregular dosing, since a stuck or worn valve can allow partial backflow. Replace it if it no longer seats fully closed, since even a small amount of leak-back can contaminate the supply line over time.

Where does it install?

The DS1.5CV installs at the outlet-side connection of the Dosatron unit. Correct outlet placement is what lets the valve block reverse flow into the upstream supply line.