Overview
The 3/4″ NPTF Female x 1/2″ NPTF straight hex coupling is a precision-manufactured hydraulic pipe thread fitting engineered for secure connections in fluid power systems. Built from forged carbon steel with a zinc-trivalent anti-corrosion coating, this straight hex coupling provides a robust solution for adapting and joining NPT-threaded pipes and components.
Key Features
- Material: Forged carbon steel with zinc-trivalent anti-corrosion coating for durability in hydraulic environments
- Thread Type: NPTF (National Pipe Tapered Fuel) on both ports for reliable mechanical locking
- Design: Straight hex coupling (female-to-female reducer) with hex body for wrench engagement
- Port Configuration: 3/4″ female inlet, 1/2″ female outlet for system adaptation
- Sealing: Tapered thread design that crushes and locks when male threads mate with female tapers; compatible with Teflon tape or pipe thread sealant
Technical Specifications
- Inlet Port: 3/4″ NPTF Female
- Outlet Port: 1/2″ NPTF Female
- Fitting Type: Straight Hex Coupling / Reducer
- Material: Carbon Steel (SAE Grade)
- Finish: Zinc-Trivalent Coating
- Thread Profile: National Pipe Tapered Fuel (NPTF)
- Operating Temperature Range: -40°F to +250°F (-40°C to +121°C)
Typical Applications
- Hydraulic system pipe connection and adaptation
- Industrial fluid power equipment assembly
- Machinery and construction equipment hydraulic circuits
- Petroleum and mineral oil-based hydraulic fluid systems
- Pressure line reducers and port adapters
Compatibility & Replacements
Compatible With
- Standard NPT pipe thread systems and components
- Hydraulic hoses with NPT female adapters
- Industrial hydraulic pumps and motors with tapered thread ports
- Manifold blocks and directional control valves with NPT ports
- Petroleum and mineral oil hydraulic fluids
Replaces / Drop-In Replacement For
This fitting is a direct replacement for any 3/4″ NPTF Female x 1/2″ NPTF Female straight hex coupling. Verify compatibility with your specific equipment or consult your system integrator before ordering if cross-referencing is required.
Works With
- NPT (National Pipe Tapered) threaded components and assemblies
- Teflon tape and pipe thread sealant compounds
- Standard hydraulic wrench sizes for hex coupling engagement
- NPTF straight connectors, elbows, tees, and other pipe thread fittings from Parker, Eaton, Weatherhead, and equivalent manufacturers






