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AAR Railway Brake Hose Gladhand Coupling of Train Air Brake Connector

AAR Railway Brake Hose Gladhand Coupling of Train Air Brake Connector

Product No.：2026731165114
Price：nogotiation
Material：high-quality carbon steel
Standard：AAR or GB
mould charge：yes
Production time：60
weight：5KGS
Package：Wooden Box
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Product Overview

The Railway Gladhand Brake Hose Coupling—commonly known as a gladhand connector—is the standardized interlocking coupling used to connect air brake hoses between locomotives, railcars, and rolling stock. The name derives from its distinctive appearance, resembling two hands clasped in a handshake when mated together .

This coupling serves as the critical pneumatic interface in the train air brake system. When two gladhand halves are joined, they form a continuous brake pipe (trainline) that transmits compressed air throughout the consist, enabling unified brake control from the lead locomotive to the last car .

The genderless, hermaphroditic design allows any two gladhands to be connected regardless of orientation, significantly simplifying train makeup operations and reducing inventory complexity .

Key Features & Technical Benefits

Feature	Technical Benefit
Genderless / Hermaphroditic Design	Any gladhand connects to any other; eliminates need for orientation-specific inventory and simplifies field operations
AAR Standard Compliance	Manufactured to AAR M-601 specifications, ensuring 100% interchangeability with existing North American railway air brake systems
High-Strength Ductile Iron Construction	Cast to ASTM A536, Grade 60-40-18 ductile iron, providing excellent strength, durability, and impact resistance under repeated coupling cycles
Rubber Gasket Sealing Interface	Mating rubber grommets or gaskets provide a positive, leak-proof seal that maintains brake pipe integrity under operating pressure
Quick Connect/Disconnect Operation	Designed for tool-less manual operation with a simple rotation locking mechanism; couplings can be disconnected by train pull-apart action without additional manipulation
Wide Temperature Range	Reliable operation from -50°C to +70°C, suitable for diverse railway environments from extreme winter conditions to high summer temperatures
Corrosion Protection	Zinc-plated finish on gasket faces and grooves (0.0005 mil minimum) with protective coating on all metal surfaces, ensuring long service life and resistance to environmental degradation

Specifications

Parameter	Specification
Product Type	Gladhand Coupling / Brake Hose Coupling Head
Application	Railway Air Brake System – Brake Pipe Connection
Compliance Standard	AAR M-601, S-427 through S-442 series
Material	Ductile Iron (ASTM A536, Grade 60-40-18)
Design	Genderless / Hermaphroditic interlocking
Sealing Method	Compressible rubber gasket / mating grommets
Working Temperature	-50°C to +70°C
Working Pressure	0 – 1 MPa
Surface Treatment	Protective coating + zinc plating (gasket face/groove)
Gladhand Weight	~2.75 lbs (typical)
Color Coding	SAE J318: Blue (service), Red (emergency) – North America

Technical Data Sheet – AAR Gladhand Brake Hose Coupling

1. Scope of Application

This document defines the technical requirements, design specifications, and test criteria for the AAR-standard railway brake hose gladhand coupling. The coupling is used on locomotives, freight cars, passenger coaches, and rolling stock to interconnect air brake hoses, forming a continuous pneumatic trainline for train brake control .

2. Applicable Standards & References

Standard	Subject
AAR M-601	Hose, Air-Brake and Train Air-Signal – Specification
AAR S-441 / S-442	Mounting of Coupling to Air Brake Hoses
AAR S-4003	Brakes and Brake Equipment – End-of-car arrangements
ASTM A536	Ductile Iron Castings – Grade 60-40-18
SAE J318	Color Coding – Service (blue) and Emergency (red) lines
ISO 1728	Pneumatic braking connections – International standard

3. Material Specifications

Component	Material	Specification
Coupling Body	Ductile Iron	ASTM A536, Grade 60-40-18
Male Nipple	Ductile Iron	ASTM A536, Grade 60-40-18
Sealing Gasket	Rubber / Elastomer	Compressible, weather-resistant
Surface Coating	Protective Plating	Zinc-plated 0.0005 mil minimum on gasket faces

4. Design & Construction

The gladhand coupling features a unitary cast body with the following key design elements :

Mating Face: Planar surface with central bore for air passage
Interlocking Mechanism: Arcuate flange with groove on one side, corresponding lug with ridge on the opposite side
Locking Feature: Ridge slides into groove during rotational engagement; ramped pads prevent inadvertent separation
Stop Mechanism: Pointed leg engages notch to limit rotation beyond locked position
Gasket Recess: Annular recess on mating face to securely retain sealing gasket

5. Functional Characteristics

Parameter	Requirement
Connection Method	Manual, tool-less rotation locking
Disconnection Method	Pull-apart action (train forces) or manual rotation
Seal Integrity	Positive seal maintained under working pressure
Interchangeability	100% compatible with AAR-standard gladhands
Gasket Compression	Provides primary retention force when coupled

6. Mounting & Installation

The coupling is mounted to the air brake hose via a threaded male nipple, which is screwed into the angle cock at each end of the rail vehicle . Installation follows AAR S-441 and S-442 specifications for proper mounting procedure .