Description

Overview

This dash control valve spring return is a PP-1 style push pull valve used on the vehicle dash to control trailer parking and emergency brakes. It is pressure sensitive, so it automatically returns to exhaust when system pressure drops below its release setting, which helps protect stored air for safe brake applications.

Features

• Push pull dash control for parking and emergency brake circuits on heavy vehicle trailers.
• Pressure sensitive design that returns the button to the exhaust position when pressure falls below about 40 psi.
• Spring return function that gives clear in or out button feedback for drivers and makes fault conditions easier to see.
• Supplied with a plain black knob so it suits general trailer and fleet applications without custom markings.

Specifications and Materials

This PP-1 type dash control valve is a manually operated on off air control valve with an exhaust function, designed for mounting through a dashboard or panel using the threaded shaft and nut. Part number: AB8367. For technical background on PP-1 push pull valves see the Bendix manufacturer service data sheet for Bendix PP-1 push pull control valves.
Key functional data include a nominal release pressure of 40 psi, a 3/8″ shaft to suit standard dash buttons, and typical 1/8″ NPT supply, delivery and exhaust ports found on PP-1 style valves, which simplifies plumbing into existing air brake dash layouts.

Compatibility and Fitment

In most applications this dash control valve spring return is used to apply and release trailer spring brakes from the cab, and it may also control other parking or emergency brake circuits. 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. 275176, PP-1, 3265205R91, JNY0807D.

Compliance and Safety

Work on air brake systems must only be carried out by trained personnel who follow workshop procedures for isolating and draining air reservoirs. Before removing any dash control valve, the vehicle must be secured by wheel chocks or another safe method. After installing this valve you should leak test the ports, verify that the button trips out close to the stated pressure, and confirm that the dash labelling clearly identifies the parking or emergency brake function.

Trailer Applications

This valve suits trailers that use a PP-1 type push pull control for their parking brake circuit, including semi trailers, B double combinations and rigid trailers with full air systems. In many builds the dash control valve spring return works with relay valves and spring brake actuators to apply or release the park brakes, so correct plumbing and verification against OEM diagrams are important for safe operation.

Cross-reference and Suitability

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

Use this list to check fleet records and OEM documentation when confirming interchange between different supplier numbers.

Why Choose ICS Trailers

ICS Trailers focuses on heavy vehicle trailer parts so you can match dash valves, relay valves and fittings from one dedicated supplier. Our team selects components that align with common Bendix based PP-1 layouts, which can reduce downtime during changeover and fault finding. If you need related air brake parts, fittings or valves, our range is built around workshop ready solutions for transport operators. Browse Air Brake Parts at ICS Trailers