
23
Relay Emergency Valves
Sealco
110267X, 110338X
4 Port Delivery
Used on converter dollies and pre-1975
trailers. Relay function applies & releases
service brakes during normal operation.
Automatically applies all service brakes
when trailer supply (emergency) line loses
pressure (disconnected or break away).
110267X
Shown
Sealco
110200X, 110205X
Ratio Relay Emergency
4 Port Delivery
Used on pre-1975 trailers. Relay function
applies & releases service brakes during
normal operation. Automatically applies all
service brakes when trailer supply (emer-
gency) line loses pressure (disconnected
or break away). Special feature: During
normal braking, was designed to provide
a higher application pressure to trailer
brakes than the signal received from trac-
tor.
110200X
Shown
Part No.
Supply
Ports
Reservoir
Ports
Delivery
Ports
Service
Ports
Emerg.
Ports
Crack
Pressure
Wght.
Core
Class
Core
Grp.
Minor
Maint. Kit
110267X 1 - 3/8" PT 1 - 3/4" PT 4 - 3/8" PT 2 - 3/8" PT 1 - 3/8" PT 5.5 PSI 6 lbs. VO W5 VK1010S
110338X 1 - 3/8" PT 1 - 3/4" PT 4 - 3/8" PT 2 - 3/8" PT 1 - 3/8" PT 4.5 PSI 6 lbs. VO W5 VK1010S
Part No.
Reservoir
Ports
Delivery
Ports
Service
Ports
Emerg.
Ports
Crack
Pressure
Wght.
Core
Class
Core
Grp.
Minor
Maint. Kit
Comments
110200X 1 - 3/4" PT 4 - 3/8" PT 2 - 1/4" PT 1 - 1/4" PT 4.5 PSI 7 lbs. VO W5 VK1010S
110205X 1 - 3/4" PT 4 - 3/8" PT 2 - 3/8" PT 1 - 3/8" PT 4.5 PSI 7 lbs. VO W5 VK1010S
Supply
Service
Service
Delivery
Delivery
Emergency
Service
Service
Emergency
Delivery
Delivery
Reservoir
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