Product Name: High Pressure Collar / HP Collar (40k-60k) – Part No. 400006-1

Description:
The High Pressure Collar (Part No. 400006-1) is a precision-machined structural component used in high-pressure waterjet systems rated for 40,000 to 60,000 PSI (approximately 2,758 to 4,137 bar) . This collar is a critical fastening and stabilizing element that slides over high-pressure tubing and engages with a mating gland nut to secure the connection. It is manufactured from high-strength, corrosion-resistant stainless steel and engineered to withstand the extreme pressure cycling, vibration, and mechanical stress inherent in waterjet intensifier pump operation .

The primary function of the HP collar is to provide a robust mechanical interface between the high-pressure water line and components such as the on/off valve, cutting head, or manifold. Unlike standard fittings, this "collar" design is often configured as an anti-vibration component, specifically engineered to dampen harmonic vibrations that travel through the high-pressure water column. By stabilizing the connection and reducing mechanical stress on threads and sealing cones, the collar extends the service life of seals, gland nuts, and other connected components . It also maintains critical coaxial alignment between the tubing and the valve or cutting head, ensuring leak-free, reliable ultra-high pressure fluid delivery.

Applications:

• Securing and stabilizing high-pressure tubing connections to the water on/off valve or cutting head assembly .

• Providing anti-vibration support for 1/4 inch, 3/8 inch, or 9/16 inch high-pressure lines, depending on the specific collar size variant .

• Serving as a key component in high-pressure fitting assemblies, which also include glands, adapter cones, and threaded unions .

• Used extensively across most major waterjet platforms, including KMT, AccuStream, H2O Jet, Flow, OMAX, WSI, and BFT systems .

Features:

• Anti-Vibration Design: The collar is specifically engineered to absorb and minimize mechanical vibration, reducing fatigue on threaded fittings and preventing loosening over time .

• High-Pressure Compatibility: Robustly constructed from stainless steel or high-strength alloy, capable of continuous operation at pressures up to 60,000 PSI (4,137 bar) and above .

• Precision Alignment: Maintains the concentricity of the high-pressure tubing, ensuring proper seating of the cone seal against the mating valve or adapter .

• Standardized Interface: Designed to work in conjunction with standard gland nuts and cone adapters, making it a direct OEM replacement for part numbers such as KMT 10078715 or FlowParts 044348-1 .

• Semi-Wear Component: While durable, the collar is considered a semi-wear part that degrades over time due to stress, requiring periodic inspection .

Maintenance:

Inspection (Critical):

• Collar Play or Slippage: Before operation, check the collar for any signs of movement. If the tubing shifts inside the collar or the collar shifts on the threads, the connection is loose and requires immediate disassembly and inspection of the threads and cone seat .

• Thread Wear and Galling: This is the most common failure mode. Disassemble the fitting and inspect the collar's internal threads, as well as the mating threads on the gland nut. Look for stripping, deformation, or silver streaks (galling). Damaged threads must be replaced to prevent high-pressure leaks .

• External Corrosion or Cracking: Examine the external surface of the collar for signs of stress cracks, pitting, or general corrosion, which can compromise the structural integrity of the connection .

Replacement and Assembly:

• Anti-Seize Lubrication: It is critical to apply a thin layer of high-pressure anti-seize lubricant (Silver Grade or "Blue Goop") to the threads of the gland nut and the mating surfaces of the collar. This prevents galling and ensures accurate torque application .

• Torque Compliance: Tighten the gland nut to the specific torque value listed in the equipment service manual. Do not over-tighten, as this can stress the collar and tubing; do not under-tighten, as this allows vibration and causes leaks .

• Proper Seating: Ensure the HP tubing is fully bottomed out in the valve port, the cone adapter is correctly aligned, and the collar is smoothly engaging the threads before applying torque.

• Full Depressurization: Always fully depressurize the waterjet system (high-pressure water, hydraulic system, and air supply) and follow lockout/tagout procedures before disconnecting or tightening any high-pressure collar or fitting.

•