Trans-DOT valves are made as rugged as the roads
you travel, no matter how you roll – truck, trailer, RV,
bus, rail or transit. From simple open/close to highly
precise motion controls, if we don’t already make it,
consider it made, with any options you need.
No specs? No problem. That’s how we roll.

🔶 Applications: Transportation – air brake
systems, air suspension systems & cabin controls for
trucks, trailers, RVs, buses, transit and rail
🔶 Types: Inline check valves, pressure protection
valves, quick exhaust valves, manual (push/pull) valves,
air pilot valves, solenoid valves
🔶 Specialty & custom valves: Slider pin release
valves with air reset, 3-way stacking valve pack, pin
release valves with built-in inversion, 4-way stacking
valve pack, lift axle control valves, kneeling valves. We
welcome requests for custom parts and designs
🔶 Materials: Anodized aluminum bodies, aluminum
spools, stainless steel springs, fasteners and adjusting
screws, urethane seals (see catalog for diaphragm
and seating material)
🔶 Configurations: Name it. Anything you need…and
nothing you don’t. We welcome special requests.
🔶 Flow Rates: .5
🔶 Functions: 2/2, 3/2, 5/2, and 5/3 blocked and
exhausted center
🔶 Options: Normally open and dual pressure
specifications, manual, electrical, air pilot and bottom or
panel (Thru-hole) mounting
Solenoid valves: Air pilot return, external air
supply, rotated solenoid 90°
Valves: Mesh port screens, internal venting thru
exhaust
Manual Knobs: Knob color, Black Neoprene
protective boot
🔶 Port sizes: 1/8”, 1/4”, 3/8”, 1/2” NPT standard; we
welcome requests for metric and other sizes
🔶 Temperatures: -40°F to +180°F for most, some to
+250°F