Description

Overview

The DuoMatic quick coupling male 1/4in NPT provides a faster way to connect trailer air brake lines than standard hose couplers. This helps drivers couple and uncouple with less handling at the rear of the trailer. It suits trailer-side mounting where a 1/4in NPT air line connection is required, and it supports fleets that want a consistent coupling interface across service trailers.

Features

• The quick-coupling design supports secure engagement during coupling
• The 1/4in NPT thread suits common pneumatic fittings and adaptors
• The coupling body supports routine inspection without special servicing steps
• The male profile suits trailer-side mounting in DuoMatic style systems

DuoMatic quick coupling male 1/4in NPT suits workshop replacements where you need quick hook-up and dependable sealing.

Specifications and Materials

Part number: AB1403.

Thread connection: 1/4in NPT.
Permissible medium: air for trailer brake pneumatic circuits.

Inspect the sealing face and locking action during routine checks to help keep coupling performance consistent.

See the manufacturer product catalogue for Duo-Matic quick couplings for technical guidance

Compatibility and Fitment

This coupling is intended for DuoMatic style air brake connections between a towing vehicle and a trailer. Coupling systems vary by fleet and region, so confirm thread type and mounting orientation before installation. If your setup uses a different thread or adaptor standard, select the correct matching variant. Also check that the mating half matches the coupling style before you commit to installation.

Compliance and Safety

Depressurise air lines before removing or fitting pneumatic components. Check for leaks after installation using an approved leak detection method to reduce the risk of air loss that can affect brake performance. Finally, follow the vehicle and trailer manufacturer procedures and any legally required inspections.

Trailer Applications

DuoMatic quick coupling male 1/4in NPT suits heavy vehicle trailers using pneumatic braking systems. It can be used on semitrailers or drawbar trailers where a DuoMatic style coupling is specified. Workshops can also keep it on hand for service replacements when the coupling face, latch action, or connection thread is damaged. Using the same coupling style across multiple trailers can also help simplify hook-up routines.

Cross-reference and Suitability

No verified cross-reference or interchange part numbers were confirmed for this item from manufacturer sources. Match by coupling type and thread specification rather than by unverified number swaps.

Why Choose ICS Trailers

ICS Trailers stocks trailer air brake parts you can fit with confidence. We can help you confirm coupling style, thread, and mounting orientation before you order, which reduces downtime and avoids returns.

Browse Air Brake Parts at ICS Trailers in our Air Brake Parts category