Product Name: Adapter, JIC/ORB, 1.0 x .75 – Part No. 05064407

Description:
This component is a high-pressure hydraulic adapter designed to bridge two different connection standards within the hydraulic system of a waterjet cutting machine . The "JIC/ORB" designation indicates it connects a JIC (Joint Industry Council) 37° flare fitting to an ORB (O-Ring Boss) port. This specific adapter has a 1.0 inch JIC male connection on one end and a .75 inch (3/4″) ORB male connection on the other, creating a straight male-to-male union.

Made from high-strength carbon steel with a zinc or trivalent anti-corrosion plating , it is built to withstand the severe pressure and vibration of industrial waterjet operation while preventing leaks.

Applications:

• Adapts a 1″ JIC female hose end to a 3/4″ ORB female port on a hydraulic component .

• Used in the hydraulic hose circuit, specifically listed as Item 2 in the Hydraulic Hose Connections assembly 72159239 .

• Serves as a critical link in the hydraulic power unit to ensure compatibility between different system components.

• Compatible with KMT (KMT Waterjet Systems) and other standard waterjet hydraulic systems.

Features:

• JIC 37° Flare Connection: Provides a reliable, vibration-resistant metal-to-metal seal suitable for high-pressure hydraulics.

• ORB (O-Ring Boss) Connection: Utilizes a straight thread and an O-ring for a positive, leak-free seal. The O-ring is a single-use item that must be replaced each time the fitting is loosened.

• Dimensional Designation: .75 typically refers to a 3/4" ORB port (with 1 1/16"-12 thread), and 1.0 refers to a 1" JIC port .

• Durable Material: Constructed from high-strength steel with a corrosion-resistant coating for extended service life.

• OEM Part: Directly replaces the original equipment manufacturer component.

Maintenance:

Failure Diagnosis (When to Replace):

• External Fluid Leakage: Visible oil weeping at either connection point indicates seal failure (JIC flare damage or ORB O-ring failure).

• Thread Damage: Stripped or galled threads on either end prevent proper tightening and sealing.

• O-Ring Degradation: On the ORB side, if the O-ring is nicked, cut, flattened, hardened, or cracked, the seal is compromised.

• Cracked Body: Any visible cracking or deformation of the adapter body requires immediate replacement.

Inspection and Replacement Guidelines:

• Full Depressurization (Critical): Before any maintenance, place the main electrical disconnect in the OFF position, fully depressurize the hydraulic system, and follow lockout/tagout procedures.

• ORB O-Ring (Single-Use): The O-ring for the ORB side is a single-use consumable. Always install a new, lubricated O-ring whenever the adapter is removed and reinstalled .

• JIC Flare Inspection: Carefully inspect the JIC male flare surface for any nicks, scratches, or deformation. Any damage will cause a high-pressure leak.

• Thread Preparation: Clean all threads thoroughly with a soft brush and compatible solvent.

• Installation for JIC Connection: Lubricate the threads of the JIC nut with clean hydraulic oil. Assemble and tighten to the specific torque spec. Do not use Teflon tape or sealant on JIC threads.

• Installation for ORB Connection: Lubricate the new O-ring with clean hydraulic oil. Ensure it is properly seated in its groove. Thread the adapter into the ORB port by hand, then tighten to the specified torque.

• Torque Compliance: Use a calibrated torque wrench to tighten both connections. For a 3/4″ ORB fitting in a steel body, the typical torque range is 70-77 N·m (51-57 ft·lbs) .

• Cross-Reference Information: This part is specifically called out in Table 12-13 of the official parts manual as part #05064407 (Item 2) .