Coilhose Pneumatics 111 Pneumatic Hose Coupler 1/4 in

Product Description

The COILHOSE PNEUMATICS 111 is a brass pneumatic hose coupler designed for high-flow interchange applications in compressed air systems. With a 1/4-inch body diameter and a 3/8-inch female NPT (FNPT) threaded connection, this coupler handles working pressures up to 300 psi and operating temperatures from -40 degrees F to 250 degrees F. It is suited for industrial, shop, and maintenance environments where reliable, leak-free air delivery is required. HVAC technicians, plumbers, and general maintenance professionals who operate pneumatic tools rely on couplers like this for consistent tool-side connections at the hose end.

This coupler is installed at the tool-side or hose-end connection point in compressed air distribution systems. Its high-flow interchange design is compatible with other high-flow style couplings used across pneumatic tool lines in light industrial, commercial, and heavy shop environments. The threaded FNPT connection allows direct installation into air hose assemblies, manifolds, or tool inlets without adapters when a matching thread size is present. The brass construction makes it appropriate for both dry and lubricated air systems.

Key Features

• High-flow interchange design for increased air volume delivery compared to standard industrial interchange
• Brass body construction for durability and corrosion resistance in compressed air service
• 3/8-inch FNPT threaded connection for secure, leak-resistant installation
• 1/4-inch body diameter coupler size rated to 300 psi maximum working pressure
• Wide operating temperature range: -40 degrees F to 250 degrees F

Compatibility

Designed as an OEM-style replacement or standard addition for pneumatic systems using high-flow interchange style couplers with a 3/8-inch FNPT thread inlet and 1/4-inch body diameter.

Installation Notes

Installation should be performed by a qualified technician familiar with compressed air systems. Depressurize the air line and disconnect the air supply completely before removing or installing any coupler. Apply thread sealant or PTFE tape to the FNPT threads per standard practice to ensure a leak-free connection. Verify that the downstream tool or hose assembly is rated to handle the system working pressure before returning the line to service.