The 3/8″ Fixed Acid Chemical Injector (Model 22.0321) is built for precise and reliable downstream chemical injection of low pH or acid-based solutions. Designed with a 2.1mm fixed orifice, this injector supports consistent chemical draw rates across compatible pressure washing and softwash systems.

This unit is ideal for use in environments requiring acid-resistant components, such as fleet washing, restoration, concrete cleaning, and equipment maintenance. It features durable construction with components that resist corrosion caused by aggressive cleaners.

Key Features:

• Inlet/Outlet Size: 3/8″ Male NPT

• Orifice Size: 2.1mm (fixed)

• Chemical Compatibility: Safe for acids, low pH cleaners, degreasers

• Design: Fixed injector for consistent performance

• Application: Downstream injection for softwash & pressure wash systems

• Pressure Rating: Up to 4000 PSI

• Temperature Rating: Up to 180°F

• Durable, chemical-resistant construction

Specifications:

• Model: 22.0321

• Orifice Diameter: 2.1mm

• Thread Size: 3/8″ Male NPT inlet and outlet

• Flow Range: ~2–4.5 GPM (flow-dependent)

• Draw Rate: Approx. 10–20%, depending on system pressure

• Material: Acid-resistant body and internal seals