Parker PBS-251-6FP Pneumatic Hose Coupler 0.25 in Female Nptf

Product Description

The PARKER PBS-251-6FP is a female NPTF pneumatic hose coupler designed for industrial compressed-air and pneumatic tool applications. The coupler body measures 0.25 inches in diameter and is manufactured from polyamide, a lightweight, chemically resistant thermoplastic well suited for dry and lubricated air service. The threaded NPTF connection provides a pressure-tight seal without the need for additional sealant tape on properly prepared ports. Licensed HVAC techs, plumbers, and industrial maintenance professionals install this style of coupler to connect air hoses and pneumatic tools to supply lines quickly and reliably.

This coupler is intended for use in industrial and commercial pneumatic systems where a standard 0.25-inch body, female NPTF threaded entry is required. Typical installations include compressed-air distribution manifolds, portable air compressor outlets, and pneumatic tool quick-connect stations. The polyamide construction keeps the coupler weight low at under 0.2 pounds, making it a practical choice for high-cycle hand tool connections and bench-top air supply setups.

Key Features

• Female NPTF threaded connection for a leak-resistant, pressure-tight seal on standard NPT ports
• 0.25-inch body diameter fits widely used industrial-style pneumatic fittings and hose assemblies
• Polyamide body material resists moisture, light oils, and common shop chemicals
• Lightweight design at approximately 0.15 pounds minimizes added mass at the hose connection point
• Industrial coupler style for compatibility with standard compressed-air quick-connect systems

Compatibility

Designed as an OEM-style replacement or new-install coupler for industrial pneumatic systems requiring a 0.25-inch body, female NPTF threaded coupler connection.

Installation Notes

Installation is typically performed by industrial maintenance technicians, plumbers, or qualified HVAC service professionals. Depressurize the air supply line completely and bleed residual pressure before removing or installing any pneumatic fitting. Inspect the NPTF port threads for damage before assembly; a damaged port can cause leaks under pressure. Hand-tighten first, then use an appropriate wrench to achieve a snug, leak-free connection without over-torquing the polyamide body.