Description

Overview

The Pacific trailer dash control valve spring return is a PP1 style push pull valve for trailer parking and emergency brake control from the cab. It mounts on the vehicle dash and controls non modulating air to spring brake circuits or other parking brake functions. Because it responds to system pressure, it automatically trips to exhaust when pressure drops below the release setting and helps protect stored air for safe stops.

Features

• Pacific trailer dash control valve spring return with clear push pull button action drivers can see at a glance.
• Pressure sensitive design that trips the button out when system pressure falls below about 40 psi.
• PP1 style layout with 3/8″ shaft to suit standard dash mounting hardware on most heavy vehicles.
• Supplied with a plain black knob so workshops can use it across mixed trailer and truck fleets.

Specifications and Materials

This PP1 style dash control valve provides manual on off control and an exhaust function for air brake circuits on trailers and compatible trucks. It mounts through the dashboard using the threaded shaft and nut, which lets technicians replace existing valves without major panel changes. Pacific Valves manufacture this unit to original equipment style specifications for air brake valves and auxiliary system components to suit trailers and most trucks. Part number: AB8367P. For independent technical background on push pull control valves refer to the Bendix manufacturer technical guide for push pull control valves
Key functional data includes a nominal 40 psi release pressure, a 3/8″ shaft, and typical PP1 style supply, delivery and exhaust ports that suit common dash valve plumbing.

Compatibility and Fitment

Many fleets use this Pacific trailer dash control valve spring return to apply and release trailer spring brakes and to control other parking or emergency brake circuits that need an on off dash control. 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, ABC288746, 88746, 278821, 279579, 284387, 284387X, 034017, 279159, 280723, 280756, K288746, 20QE378P3, LPP5591, SA145, 401179, PP-3.

Compliance and Safety

Only trained personnel should work on air brake systems, and they must follow workshop procedures for isolating and draining reservoirs before removing any dash valves. Always secure the vehicle with wheel chocks or another approved method before you disturb the parking brake circuit. After fitting this valve, technicians should leak test every port, confirm the button trips close to the expected release pressure, and check that dash labels clearly describe the parking or emergency brake function.

Trailer Applications

This valve suits semi trailers, B double combinations and rigid trailers that use PP1 style dash valves to control parking brakes through relay valves and spring brake actuators. In many builds the Pacific trailer dash control valve spring return works with relay valves, double check valves and spring brake chambers to apply or release the park brakes. Therefore installers should verify the plumbing against OEM diagrams and confirm correct line routing before returning the trailer to service.

Cross-reference and Suitability

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

Use this list to match fleet records and OEM documentation when you confirm interchange between different supplier numbers.

Why Choose ICS Trailers

ICS Trailers specialise in heavy vehicle trailer parts so you can source dash valves, relay valves and fittings from one focused supplier. Our team selects components that align with common PP1 style layouts, which helps reduce downtime during troubleshooting and changeover. Browse Air Brake Parts at ICS Trailers