Product Name: Autoline™ Diamond Orifice Assembly (0.007″ / 0.178 mm) – Part No. 05063847

Description:
This component is a synthetic diamond orifice assembly specifically designed for Autoline™ series abrasive waterjet cutting heads . Engineered to create the initial ultra-high-pressure waterjet, it forms a critical part of the cutting head assembly, positioned directly above the mixing chamber. The assembly consists of a precision-machined stainless steel housing containing a polycrystalline diamond (PCD) disc with a laser-drilled microscopic hole of 0.007 inches (0.178 mm) .

The diamond orifice is rated for continuous operation at pressures up to 94,000 PSI (approximately 6,480 bar) and is compatible with a wide range of waterjet systems .

Applications:

• Generates the initial coherent high-pressure waterjet before abrasive mixing.

• Installed in the upper section of Autoline™ I and II series cutting head assemblies.

• Suitable for ultra-high pressure waterjet systems operating at 60,000-94,000 PSI .

• Used for precision cutting of metals, stone, glass, ceramics, and composites.

Features:

• Diamond Construction: Manufactured from synthetic diamond, one of the hardest materials known, ensuring superior resistance to wear and providing exceptional longevity .

• Extended Service Life: Diamond orifices typically provide 500-1,000+ hours of service life, significantly outlasting standard sapphire or ruby orifices (1-40 hours) .

• Precision Laser-Drilled Orifice: The 0.007 inch (0.178 mm) diameter hole creates an extremely precise, coherent waterjet for optimal cutting performance .

• Improved Cutting Efficiency: Produces a more cohesive stream than sapphire or ruby orifices, resulting in longer mixing tube life and increased cutting power .

• Resistance to Abrasion: Diamond's exceptional hardness provides excellent resistance to abrasive wear caused by high-velocity water flow and particles .

• Cost-Efficiency: Longer life requires fewer replacements, reducing downtime and maintenance costs, particularly beneficial for multi-head machines .

• Autoline Compatibility: Specifically designed for Autoline™ style cutting heads .

Maintenance:

Water Quality Protection (Critical)

• Short Stop Filter Required: Using an inline high-pressure "Short Stop" filter is mandatory for warranty protection and highly recommended for optimal diamond life . This filter protects the precision orifice from line-borne contaminants and debris generated by normal pump wear .

• Water Quality Impact: Poor water quality with contaminants, hardness, or inadequate filtration accelerates orifice wear. Maintain proper water filtration and treatment.

Cleaning and Inspection

• Periodic Cleaning: Despite water treatment, dissolved solids (calcium, magnesium, silicon) can collect on the orifice. Periodic cleaning using white vinegar in an ultrasonic cleaner will maintain a clean, coherent waterjet stream and extend orifice life .

• Visual Inspection: Before each operation, observe the waterjet at low pressure. A good water-only stream should look like a "stretched fishing line" along the first inch of its length . The water stream should be symmetrical, coherent, and brilliant.

• Jet Quality Check: If the stream becomes divergent or sprays, the orifice may be damaged, misaligned, or have mineral buildup .

• Inspect for Damage: Variables including elevated water temperature and pH, plus scaling ions, can cause scale build-up around the internal diameter of the orifice. This buildup eventually results in poor jet quality .

Replacement and Handling

• No Fixed Replacement Schedule: Diamond orifices do not require replacement on a fixed schedule. Replace only when the waterjet shows divergence or cutting performance degrades, typically after 500-1,000+ hours of operation .

• Diamond Orifice Recovery: When diamond orifices give a bad stream, they can often be fixed by cleaning them in an ultrasonic cleaner, unlike sapphire/ruby orifices which must be discarded .

• Clean Installation: Before installing a new orifice, thoroughly clean the cutting head assembly to ensure no debris or contaminants are present.

• Flush System After Service: After servicing the pump or replacing a piece of plumbing, flush the system by running a Water Only test for several minutes with both the orifice and last chance filter removed .

• Stuck Orifice Removal: If the diamond orifice sticks inside the abrasive head, it can be removed by blowing shop air through the side abrasive inlet port .

• Storage: Store spare orifices in a clean, dry, protective container to prevent dust contamination or physical damage to the delicate diamond surface.

Performance Maximization:

• Orifice to Mixing Tube Ratio: For optimal cutting performance and extended mixing tube life, maintain a 1:3 diameter ratio between the orifice and mixing tube. For a 0.007″ (0.178 mm) orifice, a 0.021″ (0.53 mm) mixing tube should be used.

• Rotate Mixing Tube: Rotate the mixing tube regularly (typically every 8-10 operating hours) to distribute wear evenly .

• System Flushing: After any pump service, flush the system thoroughly with the orifice and filter removed to prevent contamination damage .

Cross-Reference Information:

• OEM KMT #: 05063847

• Compatible with Autoline™ I and II cutting heads

• Also cross-referenced in KMT orifice code lists alongside other diamond and sapphire orifice sizes 

• Part of the Autoline™ Diamond Orifice series, which includes sizes from 0.004″ to 0.020″