Dixon 6hf6-s Hydraulic Qd Coupling 3/4in Nptf Iso-b Ss

Product Description

The DIXON 6hf6-s is an H-Series hydraulic quick disconnect coupling socket designed for fast, leak-free connections in high-demand hydraulic systems. Built from 303 stainless steel with a Buna-N/Nitrile rubber seal, this straight-body socket features a 3/4 inch female NPTF port on the inlet side and a 3/4 inch female ISO-B quick disconnect interchange on the coupling side. It is rated for use in hydraulic fluid service lines where corrosion resistance and reliable sealing under pressure are required. Hydraulic technicians and fluid power mechanics are the primary installers of this fitting type.

This coupling socket is suited for industrial and mobile hydraulic applications where ISO-B interchange compatibility is specified. The straight orientation makes it a practical choice for inline connections on hydraulic tool lines, equipment circuits, and service hose assemblies. The NPTF thread form provides a pressure-tight mechanical seal without relying solely on thread sealant, which is standard practice in hydraulic plumbing.

Key Features

• H-Series ISO-B interchange design for broad cross-compatibility with ISO-B male stems
• 303 stainless steel body for corrosion resistance in wet or chemically active environments
• Buna-N/Nitrile rubber seal rated for petroleum-based hydraulic fluids
• 3/4 inch female NPTF inlet provides a pressure-tight threaded connection
• Straight body orientation for clean inline hydraulic plumbing

Compatibility

Designed for use with ISO-B interchange male stem couplings in H-Series hydraulic quick disconnect systems. Compatible with hydraulic circuits using 3/4 inch female NPTF ported components and petroleum-based hydraulic fluids compatible with Buna-N/Nitrile seals.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power mechanic. Depressurize and bleed the hydraulic circuit fully before removing or installing any coupling. Apply an appropriate thread sealant or PTFE tape to the NPTF threads per the system manufacturer's recommendations and applicable fluid power standards. Inspect the Nitrile seal for damage before placing the coupling into service.

Technical Specifications

• Series: H-Series
• Shape/Orientation: Straight
• Inlet Connection: 3/4 inch Female NPTF
• Coupling End: 3/4 inch Female ISO-B Quick Disconnect Interchange
• Body Material: 303 Stainless Steel
• Seal Material: Buna-N/Nitrile Rubber
• Coupling Type: Socket

Standard Information

• Brand: DIXON
• Manufacturer Part Number: 6hf6-s