
29
Tractor Protection Valves
Midland
KN34030X
2 Line Automatic Style
In everyday use, valve shuts off the trailer
service (control) and emergency (supply)
lines before disconnecting the tractor from
the trailer. In emergency, protects tractor
air system by closing both lines to trailer
during break away condition.
Midland
KN34050X, KN34070X
3 Line Automatic Style
In everyday use, valve shuts off the trailer
service (control) and emergency (supply)
lines before disconnecting the tractor from
the trailer. In emergency, protects tractor
air system by closing both lines to trailer
during break away condition.
KN34050X
Shown
Dash
Valve
Trailer
Emergency
Trailer
Service
Tractor
Control
Reservoir
Stoplight
Switch
Part No.
Tractor
Control
Trailer
Service
Trailer
Emerg.
Dash
Valve
Wght.
Core
Class
Core
Grp.
Minor
Maint. Kit
Comments
KN34030X 1 - 3/8" PT 1 - 1/2" PT 1 - 1/2" PT 1 - 3/8" PT 2 lbs. WG Y5 VK1002M
Trailer
Service
Tractor
Control
Dash
Valve
Trailer
Emergency
Part No.
Reservoir
Ports
Tractor
Control
Trailer
Service
Trailer
Emerg.
Dash
Valve
Stoplight
Switch
Wght.
Core
Class
Core
Grp.
Minor
Maint. Kit
KN34050X 1 - 3/8" PT 1 - 3/8" PT 1 - 1/2" PT 1 - 1/2" PT 1 - 1/4" PT -- 2 lbs. WG Y5 VK1002M
KN34070X 1 - 3/8" PT 1 - 3/8" PT 1 - 1/2" PT 1 - 1/2" PT 1 - 1/4" PT 1 - 1/8" PT 2 lbs. WG Y5 VK1002M
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