Parker UC-251-6FP Pneumatic Coupler 1/4 in Brass

Product Description

The PARKER UC-251-6FP is a brass pneumatic hose coupler designed for use in compressed air and pneumatic fluid systems. Part of the Universal Series, it features a 1/4 inch body diameter and a female NPSF threaded connection in a 3/8-18 thread size. The coupler follows the Industrial Interchange standard, making it broadly compatible across pneumatic tooling and equipment setups. Rated for a maximum working pressure of 150 psi and a temperature range of -40 degrees F to 250 degrees F, this fitting is suited for demanding shop and industrial environments. HVAC, plumbing, and general mechanical contractors who rely on pneumatic tools will find this a straightforward, durable fitting solution.

This coupler is used in light to medium industrial pneumatic applications including air tool connections, compressor line hookups, and pneumatic control systems. The Industrial Interchange configuration is one of the most widely used coupling standards in North American shops and service environments, allowing connection to a broad range of pneumatic tools and accessories. The female NPSF thread seats directly onto standard male-threaded fittings. The brass construction resists corrosion and holds up well in environments where moisture exposure is common, such as compressed air lines that see condensation.

Key Features

• Industrial Interchange standard for broad pneumatic tool compatibility
• Brass construction for corrosion resistance in moist or humid environments
• Female NPSF thread, 3/8-18 size, for secure threaded connections
• 1/4 inch body diameter with an overall length of 2.21 inches
• Rated to 150 psi maximum working pressure
• Wide temperature range: -40 degrees F to 250 degrees F

Compatibility

Designed as an Industrial Interchange style coupler compatible with standard 1/4 inch body pneumatic fittings and tools using a 3/8-18 female NPSF threaded connection.

Installation Notes

Installation is performed by a qualified technician familiar with pneumatic systems. Always depressurize and bleed the air line completely before connecting or disconnecting couplers. Apply appropriate thread sealant to the NPSF threads to ensure a leak-free connection. Inspect threads and the coupler body for damage before installation and do not exceed the rated working pressure of 150 psi.