Product ID: 20455329 – Nozzle Tube / Abrasive Nozzle Tube / Focusing Tube

Description:
This component is an abrasive nozzle tube, also known as a focusing tube or mixing tube, designed for high-pressure abrasive waterjet cutting systems. It is a cylindrical consumable component installed in the cutting head assembly, positioned downstream of the mixing chamber. Inside this tube, abrasive particles are mixed with the ultra-high-pressure waterjet and focused into a coherent, high-velocity cutting stream . This product number corresponds to a specific configuration: a 5.75-inch length with a 3/4-inch left-hand (LH) threaded connection and a 60,000 PSI pressure rating .

Applications:

• Used in abrasive waterjet cutting machines to focus the abrasive-laden waterjet onto the workpiece for precision cutting.

• Installed directly below the mixing chamber in the cutting head assembly.

• Suitable for cutting hard materials including metal, stone, glass, ceramics, armor plate, and composites.

• Compatible with a wide range of waterjet systems, including KMT, FLOW, OMAX, BFT, and WSI configurations .

Features:

• Manufactured from ultra-hard, wear-resistant tungsten carbide to withstand the high-velocity impact of abrasive particles .

• Precision-ground inner diameter (ID) using advanced grinding technology ensures a straight, focused abrasive jet for clean, narrow kerf cuts with minimal taper .

• The dense tungsten carbide structure resists erosion from high-velocity abrasive flow, providing extended service life.

• Engineered to operate at ultra-high pressures, typically rated for 60,000 PSI up to 90,000 PSI (approximately 4,137 bar to 6,200 bar) .

• Features a 3/4-inch left-hand (LH) threaded abrasive connection at the inlet .

• Overall length of this variant is 5.75 inches; other lengths are available in one-inch increments .

• Requires a compatible gland nut (e.g., 20454351 or equivalent 0.750-inch gland nut) for installation .

Maintenance:

• The nozzle tube is a sacrificial consumable; its inner bore gradually erodes with use, directly affecting cut quality and accuracy.

• Regularly inspect the exit orifice (outlet end) of the nozzle tube for ovality, flaring, visible bore enlargement, or cracking.

• Replace the nozzle tube when cut quality degrades, as evidenced by increased taper, rougher edge finish, slower cutting speeds, or difficulty piercing material.

• Typical service life ranges from 40 to 200 cutting hours, depending on abrasive type, flow rate, operating pressure, and the hardness of materials being cut.

• Before removal, fully depressurize the waterjet system and follow lockout/tagout procedures.

• When removing the nozzle tube, handle with care to avoid chipping or cracking the hard but brittle tungsten carbide material.

• During replacement, thoroughly clean the mixing chamber, nozzle holder, and all sealing surfaces to ensure proper alignment and leak-free installation.

• Apply anti-seize lubricant to the threads as recommended by the equipment manufacturer to prevent galling during future removal.

• Tighten the retaining gland nut to the specific torque value listed in the equipment service manual; over-tightening may crack the nozzle tube or damage threads.

• Do not attempt to ream, drill, or resize a worn nozzle tube. Replace it with a new component.

• Store spare nozzle tubes in a clean, dry environment, in protective packaging to prevent edge chipping or surface damage before use.