MV20021 Chemical Injector 2.1 mm | 4060 PSI Fixed Chem

MV20021 Fixed Chemical Injector Overview

The AR MV20021 fixed chemical injector is a durable, high-performance detergent mixing device designed to deliver precise and consistent chemical injection for pressure washers and professional cleaning systems. Featuring a 2.1 mm orifice rated for up to 4,060 PSI, it provides balanced flow, strong suction, and reliable detergent delivery across a wide range of working conditions.

Key Features

• 2.1 mm fixed orifice for consistent injection ratio
• Rated for systems up to 4,060 PSI
• Constructed from corrosion-resistant brass and stainless steel
• Venturi-based suction for smooth chemical draw
• Built-in check valve prevents backflow
• Compatible with most professional-grade pressure washers
• Designed for systems operating between 3.0 and 6.0 GPM

Construction & Durability

Built with corrosion-resistant brass and stainless steel, the MV20021 withstands continuous exposure to detergents, degreasers, and mildly corrosive chemicals. Its robust internal geometry minimizes wear, reduces turbulence, and ensures stable suction even under fluctuating inlet pressures.

Benefits

• Maintains structural integrity under prolonged high-pressure use
• Minimizes pressure drop to preserve pump performance
• Reduces risk of clogging due to smooth internal surfaces

Performance & Operation

The injector uses the Venturi effect to create a low-pressure zone that draws detergent into the water stream. When the operator switches to a low-pressure nozzle, detergent suction automatically activates; switching back to a high-pressure tip restores full rinse power.

Operational Advantages

• Automatic detergent on/off based on nozzle pressure
• Consistent foaming and chemical coverage
• Steady injection ratio with no manual adjustments
• Effective in both hot and cold water systems within rated limits

Installation & Compatibility

The MV20021 installs directly into the discharge line between the pump and spray gun. Its fittings accept standard quick-connect or threaded connections.

Installation Highlights

• Compact, heavy-duty body for easy inline installation
• Precision threading ensures leak-free connections
• Works with most commercial and professional pressure washers

Maintenance

Maintenance is simple—flush clean water through the system after each use to prevent chemical buildup. Corrosion-resistant materials help maintain long service intervals.

Maintenance Tips

• Use clean detergent filters
• Ensure properly sized suction tubing
• Pair with a correctly rated pump for optimal flow

Applications

• Fleet washing
• Agricultural sanitation
• Heavy equipment maintenance
• Building and exterior cleaning
• Stationary wash bays
• Mobile cleaning trailers

Professional Advantages

The fixed-orifice design ensures consistent performance across multiple machines and operators, making it ideal for commercial operations that require predictable chemical application, reduced variability, and simplified training.