ELX-S Empty/Load Valve
ELX-S Empty/Load Valve

Developed for freight cars that transport bulk commodities

The ELX-S Empty/Load Valve is a canister type sensor that attaches to the slope sheet. It uses a valve with a rubber diaphragm designed to contact the product inside the car when it is loaded to give full brake cylinder pressure. When the car is empty, the sensor rubber is unrestricted which causes the valve to divert some of the air pressure directed to the brake cylinder into a dummy volume.

  • Incorporates sensor and proportioning function
  • Self-contained unit mounts to slope sheet
  • Available in 30%, 35%, 40%, 50%, and 60% proportioning for use on bulk commodity cars
  • Diaphragm actuated, integral equalizing volume
  • Includes self resetting lock-out button that simplifies single car testing while ensuring the device automatically resets when the brake pipe is recharged
  • Compliant with AAR specification S-4002
  • Available with optional food grade (FDA) diaphragm and Brake Cylinder Read Device
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Wabtec Freight Car Components & Services


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Wabtec Corporation
30 Isabella Street
Pittsburgh, PA 15212 - USA

(412) 825-1000, option #1
freight [dot] customerservice [at] wabtec [dot] com (subject: Freight%20Car%20Website%20Inquiry) (freight[dot]customerservice[at]wabtec[dot]com)