Parker 8-1/2 F5OF-S Pipe Adapter 3/4-16 X 1/2 Nptf 6000 Psi

Product Description

The PARKER 8-1/2 F5OF-S is a straight industrial pipe adapter designed to connect male straight thread O-ring (UN/UNF-2A) fittings to male NPTF ports in high-pressure hydraulic and fluid power systems. Constructed from zinc-plated steel, the fitting handles a maximum working pressure of 6000 psi, making it suitable for demanding industrial and mobile hydraulic circuits. At 1.5 inches in overall length with a 7/8-inch hex, it installs efficiently with standard hand tools. Hydraulic technicians and pipefitters use this adapter when transitioning between thread standards at pump ports, valve manifolds, and cylinder connections.

This adapter is used in industrial and mobile hydraulic systems where a UN/UNF-2A straight thread O-ring boss port must terminate into a male NPTF connection. The 3/4-16 O-ring thread mates to a boss port, while the 1/2-inch NPTF end seals at the threads on the mating fitting. Typical install scenarios include hydraulic power units, cylinder assemblies, and manifold plumbing in both shop and field environments.

Key Features

• Straight fitting configuration for in-line thread transitions between O-ring boss and NPTF connections
• 6000 psi maximum working pressure rated for high-pressure hydraulic service
• Male straight thread O-ring (UN/UNF-2A) x male NPTF connection type
• Zinc-plated steel construction provides corrosion resistance for industrial service
• Compact 1.5-inch overall length with 7/8-inch hex for standard wrench access

Compatibility

Designed as an OEM-style adapter for hydraulic and fluid power systems requiring a 3/4-16 male straight thread O-ring boss to 1/2-inch male NPTF connection in applications rated up to 6000 psi.

Installation Notes

Installation should be performed by a qualified hydraulic technician or pipefitter. Depressurize and isolate the hydraulic circuit fully before removing or installing any fittings. Inspect the O-ring seat and O-ring for damage prior to installation and replace the O-ring if worn or cut. Tighten to the fitting manufacturer's standard back-off and lock-down procedure for straight thread O-ring boss fittings; do not over-tighten the NPTF end, as thread deformation can cause leaks.