Product Name: Anti-Vibration Gland, 3/8" – Part No. 10078913

Description:
This component is an anti-vibration gland nut, specifically designed for 3/8 inch high-pressure waterjet tubing systems . According to manufacturer documentation, this gland is listed in Table 12-54 (High Pressure Fitting and Valve Assemblies) as Anti-Vibration Gland, .38 .

The anti-vibration gland is a precision-machined stainless steel retaining nut engineered to secure high-pressure tubing connections while dampening mechanical vibrations . Unlike standard gland nuts, the anti-vibration design features a longer thread profile or specialized geometry that helps prevent threaded connections from loosening under the intense pressure pulsations generated by the intensifier pump .

This component is an OEM-equivalent replacement part, cross-referenced with multiple industry part numbers including KMT 10078913, OEM# FTKCGL60, and 200823 . It is fully compatible with 60,000-94,000 PSI (approximately 4,137-6,480 bar) waterjet systems and works with standard 3/8" HP cone adapters and collars .

Applications:

• Secures 3/8" high-pressure water lines to on/off valves, check valves, cutting heads, and manifolds

• Used as part of the anti-vibration hardware on intensifier pumps to prevent loosening from pressure pulsations

• Required for installing HP tubing in both 60KSI (4,137 bar) and 94KSI (6,200 bar) systems

• Compatible with KMT, Flow, AccuStream, H2O Jet, OMAX, BFT, WSI, and other standard waterjet systems

• Pairs with anti-vibration collars (e.g., part numbers 10078699 for 1/4" and 10093573 for 9/16")

Features:

• Anti-Vibration Design: Specialized geometry dampens mechanical vibration and prevents threaded connections from loosening under continuous high-pressure pulses

• High-Strength Stainless Steel Construction: Provides excellent corrosion resistance and structural integrity under extreme pressure cycling

• 3/8" Nominal Size: Standard size for medium-to-high flow waterjet plumbing

• Precision-Machined Threads: Ensures smooth engagement with HP fittings and accurate torque application for a reliable metal-to-metal seal

• Critical Connection Component: Essential for maintaining leak-free connections in high-vibration environments

• Swivel Joint Application: Used in high-pressure swivel joints (quantity of 2 required per swivel joint assembly) to enable rotational movement while maintaining fluid flow

• Direct OEM Replacement: Interchangeable with KMT 10078913, FTKCGL60, and 200823

• Pressure Rating: Engineered for continuous operation at 60,000-94,000 PSI (4,137-6,480 bar)

Maintenance:

Failure Diagnosis (When to Replace):

• External Water Leakage: Visible water weeping from the connection indicates a failed seal or loose/improperly torqued gland

• Thread Damage: Stripped, galled, or corroded threads prevent proper tightening and will cause high-pressure leaks

• Visible Cracks or Deformation: Any cracking or distortion of the stainless steel nut warrants immediate replacement

• Difficult Assembly: If the gland feels gritty or binds during threading, threads may be damaged

• Vibration Loosening: If the connection becomes loose during operation due to vibration, inspect threads for wear and replace if necessary

• Scheduled Preventive Maintenance: Replace gland nuts showing thread wear or scoring during regular maintenance intervals

Inspection and Replacement Guidelines:

• Full Depressurization (Critical): Before any maintenance, place the main electrical disconnect in the OFF position, bleed down all high-pressure lines, and follow lockout/tagout procedures. Never service a pressurized HP line

• Inspect Components: Before assembly, thoroughly check threads for damage. When a high-pressure joint has been disturbed, it is standard practice to replace the gland, cone, and collar as a set if they show signs of wear

• Lubrication: Apply a thin, even layer of high-pressure anti-seize compound (e.g., "Silver Grade" or "Blue Goop") to the threads only. Do not apply lubricant to cone sealing surfaces

• Two-Wrench Method (Critical): Always use two appropriately sized wrenches—one to counter-hold the fitting body and one to tighten the gland nut—to prevent twisting stress on the assembly

• Torque Compliance: Tighten the gland nut to the specific torque value listed in the equipment service manual for 3/8" HP connections. Use a calibrated torque wrench. Over-tightening can damage the cone seat; under-tightening will cause leaks

• Check Mating Surfaces: Always verify thread engagement and inspect mating surfaces before installation to prevent leaks

• Replace if Damaged: Replace the gland immediately if threads are damaged, cracks are visible, the nut shows signs of deformation, or persistent leakage occurs despite correct installation

• Use OEM-Rated Lubricants: Proper torque application and use of OEM rated lubricants will ensure long-term sealing integrity and vibration resistance

• Storage: Store spare glands in a clean, dry environment to protect precision threads from damage before use

Cross-Reference Information:

• OEM Part Number: 10078913

• Table 12-54: High Pressure Fitting and Valve Assemblies (Anti-Vibration Gland, .38)

• KMT #: 10078913, FTKCGL60

• OEM#: FTKCGL60, 200823

• Alternative #: FGCAV-38 (European market equivalent)

• GPP Equivalent: GAV-66K6 (66K psi version)

• Used in: High pressure swivel joints (quantity of 2 required per assembly)

• Compatible with: KMT, Flow, AccuStream, H2O Jet, OMAX, BFT, WSI, and other standard waterjet systems

• Pressure Rating: 60,000-94,000 PSI (4,137-6,480 bar)

• Connection Size: 3/8 inch HP