Coilhose Pneumatics A900B4F Pneumatic Coupler 1/4 Inch Brass

Product Description

The COILHOSE PNEUMATICS A900B4F is a brass pneumatic coupler designed for use in compressed-air systems where reliable, leak-free connections are required. It features a 1/4-inch female NPT (FNPT) threaded connection and a 1/4-inch body diameter, built to the Acme interchange standard. Rated for a maximum working pressure of 300 psi and a temperature range of -40 degrees F to 250 degrees F, this coupler handles the demands of shop air, industrial pneumatic tools, and service equipment. Brass construction provides corrosion resistance and durability in both indoor and outdoor environments. Licensed HVAC technicians, plumbers, electricians, and general trade professionals install this type of fitting as part of air-supply and pneumatic tool setups.

This coupler is suited for residential and light commercial pneumatic systems using Acme interchange-style quick-connect fittings. The FNPT thread type allows direct connection to standard pipe-threaded ports on air compressors, pneumatic manifolds, hose assemblies, and tool inlets. The Acme interchange format ensures compatibility with a wide range of Acme-standard couplers and plugs commonly found in shop and field environments. It is sold individually and is appropriate for new installations or direct replacement of worn or damaged couplers in existing pneumatic lines.

Key Features

• Acme interchange standard — pairs with Acme-type plugs and couplers in existing pneumatic systems
• 1/4-inch FNPT threaded connection for direct pipe-thread installation
• Brass construction for corrosion resistance and long service life
• 300 psi maximum working pressure rating
• Wide temperature range: -40 degrees F to 250 degrees F
• 1/4-inch body diameter — compact form factor for tight installation spaces

Compatibility

Designed as an Acme interchange-style pneumatic coupler compatible with standard 1/4-inch FNPT-threaded ports and Acme-standard pneumatic plugs and hose fittings.

Installation Notes

Depressurize the air supply line completely before removing or installing any pneumatic coupler. Apply thread sealant tape or pipe dope rated for compressed air to the FNPT threads before installation to ensure a leak-free joint. Tighten by hand first, then use an appropriate wrench — do not overtighten brass fittings. Verify system pressure does not exceed the 300 psi rating of this coupler after reinstating air supply.