Coilhose Pneumatics A900B4M Hose Coupler 1/4 Mnpt Acme

Product Description

The COILHOSE PNEUMATICS A900B4M is a brass pneumatic hose coupler designed for use in compressed air distribution systems. With a 1/4-inch male NPT (MNPT) threaded connection and a 1/4-inch body diameter, this coupler follows the Acme interchange standard, making it compatible with Acme-pattern fittings commonly found in industrial and shop environments. Brass construction offers good corrosion resistance and durability for general compressed air service. The part weighs 0.5 pounds and is sold individually. It is appropriate for use wherever a reliable, threaded quick-disconnect connection point is needed in a pneumatic line.

This coupler is suited for light industrial, commercial shop, and maintenance applications where Acme interchange pneumatic fittings are in use. Typical installations include air compressor outlets, drop lines, and tool connection points in automotive, manufacturing, and general trade service environments. The threaded MNPT connection allows direct installation into female NPT ports on manifolds, hose assemblies, or inline fittings without adapters. It is sized for use with standard 1/4-inch pneumatic hose and fitting assemblies.

Key Features

• Acme interchange standard — mates with Acme-pattern pneumatic fittings
• 1/4-inch MNPT threaded connection for direct installation into female NPT ports
• 1/4-inch body diameter matches standard quarter-inch pneumatic line sizes
• Brass construction provides corrosion resistance for compressed air service
• Sold as a single unit with no minimum order beyond one piece

Compatibility

Designed as an OEM-style replacement or service coupler for pneumatic systems using the Acme interchange fitting standard with 1/4-inch MNPT threaded connections.

Installation Notes

Installation is performed by a qualified pneumatic or mechanical technician. Depressurize the air line and disconnect the compressor or air supply before removing or installing any fitting. Apply thread sealant tape to the MNPT threads per standard practice and tighten to snug by hand before using a wrench — avoid overtightening brass fittings to prevent thread damage. Verify the mating coupler or plug follows the Acme interchange pattern before installation.