Parker PBS-251-4FP Pneumatic Hose Coupler 0.25in Female Nptf

Product Description

The PARKER PBS-251-4FP is a female NPTF industrial pneumatic hose coupler designed for compressed-air and pneumatic tool applications. Built from polyamide, this coupler offers a lightweight yet durable connection point for air hoses in service bays, manufacturing floors, and mechanical shops. The threaded NPTF interface provides a reliable, leak-resistant seal without the need for additional thread sealant in many applications. The 0.25 inch body diameter makes it a standard fit for common quarter-inch pneumatic systems. At 0.126 pounds, it installs quickly and adds minimal mass to the hose assembly. HVAC technicians, machinists, and general maintenance trades rely on this style of coupler for everyday pneumatic line connections.

This coupler is suited for industrial pneumatic systems where a female NPTF threaded connection is required. Typical installations include air compressor outlets, drop-line manifolds, and portable air tool setups in both light industrial and commercial maintenance environments. The polyamide construction keeps weight low while maintaining sufficient durability for repetitive connect and disconnect cycles under normal shop-air pressures.

Key Features

• Female NPTF threaded connection for leak-resistant thread engagement
• 0.25 inch coupler size matches standard quarter-inch pneumatic hose and tool fittings
• Polyamide body construction reduces weight without sacrificing structural integrity
• Threaded connection type allows secure, tool-free hand-tightening in many setups
• Compact form factor at 0.126 pounds suits high-cycle pneumatic applications

Compatibility

Designed as an OEM-style replacement or addition for industrial pneumatic systems requiring a 0.25 inch female NPTF threaded coupler fitting.

Installation Notes

Installation should be performed by a qualified technician familiar with compressed-air system plumbing. Depressurize the air line completely before removing or installing any coupler fitting. Inspect threads for damage before assembly and apply thread sealant tape if required by the system specification. Follow applicable OSHA compressed-air safety guidelines and local mechanical codes when working on pressurized pneumatic systems.