Overview
The Eaton Aeroquip FD40 Series quick disconnect coupling delivers proven performance in hydraulic and pneumatic applications. These couplings feature self-sealing poppet valve technology that minimizes fluid spillage and prevents air ingestion during connection and disconnection. The FD40 Series is engineered for industrial, mobile, and stationary equipment requiring secure, repeatable coupling cycles without system downtime.
Key Features
- Self-sealing poppet valve design minimizes spillage and protects against contamination
- Straight-through male half for unrestricted flow and minimal pressure drop
- Protective collar design prevents accidental snagging and disconnection
- Steel body construction delivers durability in high-pressure environments
- Available in multiple port and nominal sizes for flexible system integration
- Ordered by halves for customized assembly configurations
Technical Specifications
- Series: FD40
- Coupling Style: Quick Disconnect with self-sealing poppet valves
- Body Material: Steel
- Common Seal Material: Buna-N (nitrile rubber)
- Port Configurations: 3/8″-18 SAE, additional sizes available
- Flow Design: Straight-through male half
- Mounting: Threaded port connection
- Operating Media: Hydraulic fluid, pneumatic air (fluid compatibility varies)
- Fluid Compatibility: Standard mineral oils, pneumatic applications; consult manufacturer for synthetic fluids
Typical Applications
- Mobile hydraulic equipment (loaders, excavators, compact equipment)
- Stationary industrial hydraulic systems and machinery
- Pneumatic tool systems and air-powered equipment
- Agricultural and forestry equipment
- Construction and material handling systems
- Machine tool applications requiring frequent fluid circuit disconnection
Compatibility & Replacements
Compatible With
- Eaton Aeroquip high-pressure hose assemblies (rated for hydraulic and pneumatic media)
- SAE threaded ports matching coupling size designations
- Industrial hydraulic pumps and pneumatic compressor systems
- Mobile and stationary equipment designed for FD Series couplings
- Systems using mineral-based and compatible synthetic hydraulic fluids
Replaces / Drop-In Replacement For
- Older FD40 Series coupling halves (1000, 1001, 1013, 1014 submodel variants)
- Verify specific model number and configuration with your system integrator before ordering
Works With
- Eaton Aeroquip hose systems and pressure-rated tubing assemblies
- Hydraulic and pneumatic component manufacturers using SAE port standards
- Field service and maintenance replacement programs
- Custom fluid distribution system design and assembly
