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The PARKER PBH-251-6FP is a female NPTF threaded pneumatic hose coupler designed for industrial compressed air and pneumatic fluid systems. With a 0.25 inch body diameter and polyamide construction, this coupler provides a reliable, corrosion-resistant connection point for pneumatic hoses and fittings. The threaded NPTF interface creates a pressure-tight mechanical seal without the need for additional sealant in many applications. HVAC technicians, industrial maintenance professionals, and pneumatic system installers use this coupler type for quick-connect and semi-permanent hose assemblies in both shop and field environments.
This coupler is suited for industrial pneumatic applications where a female threaded inlet is needed to mate with a corresponding male connector or fitting. Typical installations include compressed air distribution lines, pneumatic tool hookups, and air-powered equipment in commercial or light industrial settings. The polyamide body keeps overall weight low at 0.153 pounds, making it practical for installations where fitting mass or vibration loading is a consideration.
Designed as an OEM-style replacement or new-installation coupler for industrial pneumatic hose assemblies using a 0.25 inch body diameter female NPTF threaded connection.
Installation should be performed by a qualified technician familiar with pneumatic system pressures and fitting torque practices. Depressurize and isolate the pneumatic line completely before removing or installing any coupler. Inspect the NPTF threads for damage before assembly, and apply thread sealant only if required by the system specification. Follow applicable OSHA and system manufacturer guidelines for maximum allowable working pressure on all pneumatic connections.
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