10078590 HP Coupling
Product ID: 10078590 – HP Coupling (High-Pressure Tee / 3/8" Three-Way Connector)
Description:
This component is a high-pressure (HP) coupling, specifically a 3/8" tee or three-way connector, designed for ultra-high pressure (UHP) fluid distribution in waterjet cutting systems . It is a precision-machined stainless steel fitting used to split or combine high-pressure water flow across multiple branches within the system plumbing .
The coupling is manufactured from materials with high tensile strength and corrosion resistance to withstand the stress exerted by ultra-high pressure fluids . This specific 3/8" HP Tee is rated for continuous operation at 60,000 PSI (approximately 4,137 bar) and is a standard OEM replacement component for waterjet intensifier systems .
This part number is listed as Coupling Assembly, HP, .56 x .38 in certain part lists, indicating compatibility between 0.56 inch and 0.38 inch high-pressure connections . It is also cross-referenced simply as HP Tee 3/8" and is compatible with KMT waterjet systems and other major waterjet cutting equipment .
Applications:
Used in waterjet cutting systems to connect, split, or direct high-pressure water flow from intensifier pumps to multiple cutting heads or system branches .
Installed in high-pressure piping networks (often between the pump outlet and the cutting head) to accommodate fluid control and routing requirements .
Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI (approximately 4,137 bar).
Features:
High-Strength Construction: CNC-machined from stainless steel or high-grade alloy steel to ensure structural integrity under extreme pressure cycling .
Precision-Machined Ports: Features precision threads and cone sealing surfaces for reliable metal-to-metal high-pressure connections.
Tee Configuration: A three-port (triple) design allows for the distribution of high-pressure water to two outlets or the merging of flow paths.
Standard Port Size: The 3/8" connection is an industry standard for medium to high flow waterjet systems .
OEM Compatibility: A direct replacement for KMT waterjet systems and cross-compatible with many major brands .
Maintenance:
Inspection: Regularly inspect the coupling body and ports for signs of pitting, erosion, cracking, or corrosion. Pay particular attention to cone sealing surfaces and internal passages .
Thread and Seal Care: Before assembly, check the 3/8" threads for galling or damage. Ensure the sealing cones are free of debris and nicks .
Torque Compliance: Tighten the fitting to the specific torque value listed in the equipment service manual to prevent high-pressure leaks or thread damage .
Lubrication: Apply a thin layer of manufacturer-recommended high-pressure thread lubricant or anti-seize compound to the threads during reassembly to prevent galling and ensure accurate torque application.
Full Depressurization: Always fully depressurize the waterjet system (hydraulic and high-pressure water circuits) and follow lockout/tagout procedures before installing, removing, or servicing the coupling .
Replacement Criteria: Replace the coupling if threads are damaged, if cone sealing surfaces are scored or deformed, if cracks are detected, or if internal erosion is excessive.













