Description

Overview

The Sealco service relay valve 2 port delivers fast, consistent control of trailer service brakes on single-axle or axle-by-axle layouts. Therefore it speeds signal response, improves release, and helps workshops standardise plumbing on common NPT sizes for heavy road freight.

Features

• Two delivery ports with 3/8 NPT threads for flexible tandem or single-axle plumbing
• 3/8 NPT control and 1/2 NPT reservoir ports to suit typical trailer brake circuits
• Nominal 1.5 psi crack pressure for quick, progressive service brake application
• Bracket-mount configuration that simplifies frame mounting when nipple mounting is impractical

Specifications and Materials

Part number: AB8363.
This service relay valve follows the LOV-2 family pattern with 3/8 NPT control, 1/2 NPT reservoir and two 3/8 NPT delivery ports. Consequently, it integrates cleanly into standard trailer service brake circuits and supports fast release from chamber lines. See the Sealco service relay valve catalogue page for port sizes, crack pressure and mounting notes

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. 110365, SEA110365, E-SL110365, 110360, KN28300, 51402, LOV2.

Compliance and Safety

Before you start, isolate and drain the air system. Next, tag each line and match it to the body-marked supply, control and delivery ports. After installation, perform a controlled brake test to confirm correct modulation, crack response and even left/right release. Finally, inspect for leaks and re-torque fasteners after the first service interval.

Trailer Applications

Workshops use the Sealco service relay valve 2 port on converter dollies, semi-trailers and long wheelbase combinations where faster service response and tidy plumbing matter. In addition, fleets fit it as a frame-mounted alternative where nipple mounting won’t suit local bracketry or clearance.

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 focuses on heavy vehicle parts that stand up to Australian conditions. Accordingly, you get clear specifications, cross-references and straight guidance to confirm fit before ordering, which helps reduce workshop rework and downtime.

Browse Air Brake Parts at ICS Trailers