Description

Overview

The Sealco Emergency Release Control Valve 1/8in delivers air only while the operator holds the knob in, then it vents when released. This suits emergency release tasks where you need short, controlled bursts rather than a maintained control position. It is also commonly used as a dash valve inside a tractor or truck.

Features

This valve provides simple, momentary control for safety critical air circuits.

• Momentary push operation, so it closes automatically on release
• Dash or panel mount form factor for tidy installs
• Emergency release application for controlled air delivery
• 1/8in NPT inlet and outlet for common air brake plumbing

Specifications and Materials

Match the port sizes and mounting thread to your existing plumbing so the valve seals correctly and sits securely in the dash or panel. This valve uses a 1/8in NPT inlet and a 1/8in NPT outlet, and it mounts via a 7/16in thread. The Sealco Emergency Release Control Valve 1/8in suits setups where the operator must hold the knob to maintain delivery pressure.

Part number: AB8445.
For official specifications, use the Sealco hand control valves catalogue page

Compatibility and Fitment

Confirm thread type, port orientation, and available clearance before you plumb this valve into an air circuit because layouts vary between vehicles.

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. 342502

Compliance and Safety

Air brake systems are safety critical, so a qualified heavy vehicle technician should install and test the valve after fitment. Pressure test the circuit, verify there are no leaks, and confirm the valve vents correctly when the knob is released.

Trailer Applications

Although this valve is normally used in a tractor or truck dash, it can still support trailer operations during coupling, yard moves, and workshop checks where a controlled emergency release function is required. It helps when you need a momentary air signal rather than a maintained control position, for example during diagnostics or controlled air release tasks. Selection stays straightforward when your system uses 1/8in NPT plumbing and a 7/16in mounting thread.

Cross-reference and Suitability

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

Next, use port sizing and mounting thread as your primary checks because part numbers alone do not guarantee correct fitment.

Why Choose ICS Trailers

ICS Trailers helps you match the right air brake components for heavy transport applications with clear, selection friendly specs. You can also bundle this valve with compatible air fittings and air line hardware to keep repairs consistent.

Browse Air Brake Parts at ICS Trailers to view related valves and fittings