Description

Overview

The Relay Valve CA700 delivers fast, balanced brake application for heavy trailers, and therefore helps shorten response time across multi-axle circuits. It mounts close to the service chambers so, as a result, it reduces line pressure drop and improves release consistency across the axle set.

Features

• Quick response relay action to apply and release service brakes rapidly
• Built-in protection and anti-compounding functions to safeguard spring brake circuits
• Colour coded for easy identification and maintenance in fleet service
• Suits CA700 family layouts and typical Australian trailer air systems

Specifications and Materials

Part number: AB8531.
Typical porting: supply 1/4 NPT, delivery 3/8 NPT, tank mount 3/8 NPT, six working ports.
Intended use: chassis-mounted relay valve for air brake systems on heavy trailers and dollies.
For background on how relay valves control flow in air brake systems, see the manufacturer technical guide to air brake valves.

Compatibility and Fitment

This cross-reference listing means this valve is a suitable replacement for the part numbers and applications shown. Some changes in air line plumbing may be required.
CA87, CA700

Compliance and Safety

Installers should verify the valve’s function after plumbing and then perform a full leak and service test. Additionally, confirm system compliance with current ADR and NHVR brake performance requirements before returning the vehicle to service.

Trailer Applications

Use this relay valve on tri-axle or tandem trailers where shorter brake response and more even chamber timing are required. It is also suitable for converter dollies and, furthermore, works well with spring brake systems that need anti-compounding protection.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers sources proven SCTEG components and supports them with practical, local knowledge. Consequently, you get parts that fit, clear technical information and quick delivery when your fleet is on the clock. Browse Air Brake Parts at ICS Trailers