Parker PBS-251-4MP Pneumatic Hose Coupler 0.25in

Product Description

The PARKER PBS-251-4MP is a 0.25-inch industrial pneumatic hose coupler designed for compressed-air and pneumatic tool connections in demanding trade applications. Constructed from polyamide, this coupler offers corrosion resistance and reliable performance in environments where metal couplers may not be required. It features a male NPTF threaded connection for a pressure-tight fit when mated to standard female NPTF fittings. The 0.25-inch body diameter suits common air hose and pneumatic tool setups. Installation is straightforward and the part ships individually, making it a practical replacement or spare for service technicians and maintenance professionals.

This coupler is suited for residential and commercial pneumatic systems, including air compressor lines, pneumatic tool connections, and workshop air distribution setups. The male NPTF thread form provides a dry-seal connection that reduces the need for thread sealant tape when properly torqued into a compatible female port. It is commonly installed by HVAC technicians, plumbers, electricians, and general maintenance trades that operate pneumatic tools or compressed-air systems on the job site.

Key Features

• Polyamide construction provides corrosion resistance and light weight
• 0.25-inch body diameter fits standard quarter-inch pneumatic hose and tool connections
• Male NPTF threaded connection delivers a pressure-tight dry-seal fit
• Industrial-grade coupler design rated for compressed-air service
• Sold individually — direct one-for-one replacement or spare

Compatibility

Designed as an OEM-style replacement or service spare for industrial pneumatic systems using 0.25-inch male NPTF coupler connections in standard compressed-air applications.

Installation Notes

Shut off and bleed down compressed-air supply pressure completely before removing or installing any pneumatic coupling. NPTF threads are designed for dry-seal assembly, but inspect threads for damage before installation. Use an appropriately sized open-end wrench to achieve a secure connection without over-stressing the polyamide body. Follow applicable facility safety procedures and any relevant compressed-air system codes when servicing pneumatic lines.