This 2 Port Service Relay Valve provides a balanced control line signal for uniform braking of multi-axle combination vehicles. Improves application timing of service brakes in rear of most axles of long wheel base tractor/trailer combinations. Improves the release of service brakes in the tractor/trailer combination eliminating trailer brake drag complaints. Frame mounted.
3/8" Control port size1/2" Reservoir port size3/8" Delivery port size
Used on these trailers: Lowboy.
Replaces part# Sealco 110360, Ranco 110360