Product Name: Legacy Mixing Chamber / Older Model Mixing Chamber

Description:
This component is a legacy mixing chamber, also known as an older model abrasive mixing chamber or Venturi block, designed for abrasive waterjet cutting systems . It is a precision-machined stainless steel housing that serves as the central body where the ultra-high-pressure waterjet and garnet abrasive particles combine .

The chamber features a specially engineered internal bore (often containing a tungsten carbide Venturi insert) that creates a vacuum to draw abrasive in through a side port. This "Venturi" effect is critical for efficient abrasive metering and jet formation . The "older" designation indicates it may lack modern "tool-free" maintenance features (such as self-aligning cartridges or quick-change knobs) and relies on traditional threaded retainers or collets for assembly . It is typically rated for continuous operation at 60,000 PSI (4,137 bar).

Applications:

• Core mixing component in abrasive waterjet cutting heads (older models)

• Positioned between the jewel orifice (water nozzle) and the mixing tube (focusing tube)

• Provides the internal Venturi geometry for abrasive suction without moving parts

• Suitable for legacy 60K (60,000 PSI) waterjet systems

Features:

• Venturi Geometry: Precision internal bore creates vacuum for consistent abrasive draw 

• Stainless Steel Housing: Durable, corrosion-resistant body material

• Traditional Retention: Typically uses collets or separate retaining nuts (not tool-free) 

• Critical Wear Component: Replaces the older mixing block when inlet edges show wear

• Abrasive Inlet Port: Side port designed to introduce garnet at an optimized angle

• Pressure Rating: Engineered for 60,000 PSI continuous operation (older standard) 

Maintenance:

• Inspect Inlet Edge Wear: Visually check the internal inlet bore for rounding or erosion. If edge wear exceeds ~0.003 inches, mixing efficiency drops significantly .

• Monitor Vacuum Pressure: Watch the negative pressure gauge; a drop in suction indicates internal chamber wear or venturi blockage.

• Prevent Backflow (回水): Backflow of water into the abrasive tube usually indicates a worn mixing chamber or a misaligned/jet obstruction, requiring immediate service .

• Alignment Check: Due to lack of self-aligning features, ensure the water orifice is perfectly coaxial with the mixing tube when installing .

• Restore Jet Power: When replacing the chamber, it is strongly recommended to install a new water orifice (nozzle) and a new mixing tube at the same time to restore full jet performance .

• Full Depressurization: Always shut down the high-pressure pump and bleed all pressure lines before disassembling the cutting head .