GP 100828 Adjustable High Draw Chemical Injector – 1.8mm Brass w/ Acid Kit

Model: 100828
Category: Pressure Washer Parts & Accessories → Chemical Injectors
Type: GP Adjustable High-Draw Acid Chemical Injector – 1.8 mm Brass

The GP 100828 Adjustable High-Draw Chemical Injector with Acid Kit is a genuine General Pump (GP) OEM downstream injector designed for pressure washer systems that require adjustable detergent or acid-based chemical application. Installed downstream of the pump, the injector prevents corrosive chemicals from entering the pump while allowing efficient chemical injection into the water stream.

Note: For proper injector operation, pressure washer hose length should not exceed 100 feet, as longer hose runs may reduce chemical draw efficiency.

Key Features

• Genuine General Pump OEM adjustable chemical injector

• Includes acid kit for acid-based cleaning applications

• High-draw chemical injection up to 20%

• 1.8 mm injector orifice designed for mid-range flow systems

• Ideal for 2–3 GPM pressure washer systems

• 3/8" male NPT inlet and outlet connections

• 1/4" hose barb chemical pickup port

• Adjustable detergent draw using built-in dial control

• Integrated check valve prevents backflow into chemical container

Technical Specifications

Part Number: 100828
Brand: General Pump (GP)
Injector Type: Adjustable Downstream Chemical Injector
Orifice Size: 1.8 mm
Chemical Draw Rate: Up to 20% (Hi-Draw)
Flow Range: 2 – 3 GPM
Inlet Connection: 3/8" Male NPT
Outlet Connection: 3/8" Male NPT
Chemical Port: 1/4" Hose Barb
Maximum Pressure: 4500 PSI
Maximum Temperature: 190°F
Material: Brass
Application: Pressure washer detergent and acid injection systems
Condition: New

Typical Applications

• Pressure washer downstream detergent injection systems

• Acid injection for masonry and concrete cleaning

• Brick and stone restoration

• Mineral and rust stain removal

• Residential and commercial pressure washing equipment.